CN114562685A - TDLAS extraction type tubular smoke cooler leakage monitoring system and method - Google Patents
TDLAS extraction type tubular smoke cooler leakage monitoring system and method Download PDFInfo
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- CN114562685A CN114562685A CN202210260491.8A CN202210260491A CN114562685A CN 114562685 A CN114562685 A CN 114562685A CN 202210260491 A CN202210260491 A CN 202210260491A CN 114562685 A CN114562685 A CN 114562685A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 63
- 238000000041 tunable diode laser absorption spectroscopy Methods 0.000 title claims abstract description 55
- 239000000779 smoke Substances 0.000 title claims abstract description 50
- 238000000605 extraction Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003546 flue gas Substances 0.000 claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 50
- 238000004891 communication Methods 0.000 claims description 26
- 238000005070 sampling Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000013307 optical fiber Substances 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 3
- 238000005259 measurement Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides a TDLAS extraction type pipe type smoke cooler leakage monitoring system and a method, wherein the system comprises: the system comprises a sample acquisition module, a sample analysis module, a data processing and displaying module and an intelligent early warning module, wherein the sample acquisition module is connected with the sample analysis module; the sample collection module is used for collecting a flue gas sample in a flue of the tubular flue gas cooler; the sample analysis module is used for analyzing the collected flue gas sample; the data processing and displaying module is used for processing and displaying the data analyzed by the sample analyzing module; the intelligent early warning module is used for carrying out intelligent early warning according to a data processing result. The TDLAS extraction type pipe type smoke cooler leakage monitoring system and method provided by the invention have the advantages that the measurement precision is high, the condition that the pipe type smoke cooler cannot be monitored due to overlarge load or poor flue environment is avoided, and the leakage condition of the pipe type smoke cooler can be monitored in real time.
Description
Technical Field
The invention relates to the technical field of smoke cooler monitoring, in particular to a TDLAS extraction type tubular smoke cooler leakage monitoring system and method.
Background
The tubular smoke cooler is through the pipeline that runs through the flue, with low temperature rivers through the flue, reduces the gas temperature through heat exchange's mode, and the common method of current smoke cooler pipeline leakage monitoring includes makeup water tank water level monitoring method and TDLAS to wearing formula leakage monitoring method, and wherein, makeup water tank water level monitoring method specifically is: the water replenishing tank is a water tank for providing low-temperature water for the water pipe, whether leakage exists or not is judged by monitoring the water level of the water replenishing tank, and when the water level of the water replenishing tank is lower, the leakage exists in the water pipe, but the method can only detect the obvious leakage condition, but the leakage is slight, the water level change hardly occurs, and the precision is poor; TDLAS is to wearing formula leakage monitoring specifically does: the method is characterized in that a laser is directly installed on the flue to monitor the concentration of water vapor in the flue, when the concentration of the water vapor is increased, the condition that the flue leaks is indicated, but the method is easily affected by load, when the load is small and the flue dust and the like are less, the laser can penetrate through the flue, the measurement effect is obvious, and if the load is large, the laser cannot penetrate through the flue, the measurement cannot be performed. Therefore, it is necessary to design a TDLAS extraction type tubular smoke cooler leakage monitoring system and method.
Disclosure of Invention
The invention aims to provide a TDLAS extraction type tubular smoke cooler leakage monitoring system and method, which are high in measurement accuracy, avoid the condition that the leakage of a tubular smoke cooler cannot be monitored due to overlarge load or poor flue environment and can be monitored in real time.
In order to achieve the purpose, the invention provides the following scheme:
the utility model provides a TDLAS extraction formula tubular cigarette cooler leakage monitoring system, includes: the intelligent early warning system comprises an intelligent early warning module, a data processing and displaying module, a sample analyzing module and a sample collecting module, wherein the sample collecting module is connected with the sample analyzing module, the sample analyzing module is connected with the data processing and displaying module, and the data processing and displaying module is connected with the intelligent early warning module;
the sample collection module is used for collecting a flue gas sample in a flue of the tubular flue gas cooler;
the sample analysis module is used for analyzing the collected flue gas sample;
the data processing and displaying module is used for processing and displaying the data analyzed by the sample analyzing module;
and the intelligent early warning module is used for carrying out intelligent early warning according to a data processing result.
Optionally, the sample collection module includes detection case, sampling tube, sample centrifugal fan and cyclone, the left and right sides of detection case passes through the flue of sampling tube circular connection tubular smoke cooler, the sampling tube with the entrance of detection case sets up sample centrifugal fan and cyclone for realize flue gas collection and impurity filtering work, sample centrifugal fan and cyclone electric connection data processing and display module.
Optionally, the sample analysis module includes a transmitting end box body, a collimator, a photoelectric detector, an optical fiber line, a coaxial cable and a receiving end box body, the transmitting end box body and the receiving end box body are arranged on the upper side and the lower side of the detection box relatively, the collimator is arranged in the transmitting end box body, the data processing and display module is connected with the collimator through the optical fiber line, the photoelectric detector is arranged in the receiving end box body, the photoelectric detector is electrically connected with the data processing and display module through the coaxial cable, and the collimator and the photoelectric detector are arranged relatively.
Optionally, data processing and display module include switch board, industrial computer, TDLAS control box, UPS and display on the spot, the switch board sets up the one side at the flue on the spot, industrial computer, TDLAS control box, UPS and display all set up inside the switch board on the spot, UPS is used for providing the power, TDLAS control box and display are connected through the data transmission line to the industrial computer, connect through the power cord sample centrifugal fan and cyclone for the power supply, TDLAS control box passes through the fiber line and connects the collimater passes through coaxial cable and connects photoelectric detector.
Optionally, the intelligent early warning module includes communication converter, RS485 communication cable, DCS communication cable and DCS display module, the industrial computer passes through RS485 communication cable connection the communication converter, the communication converter passes through DCS communication cable connection DCS display module.
Optionally, the transmitting end box body is fixedly arranged at the top center of the detection box through a first flange, the transmitting end box body is provided with a first compressed air pipeline for providing cooling and purging air for the transmitting end box body, a transmitting end extension pipeline is arranged at the bottom of the transmitting end box body, the transmitting end extension pipeline penetrates through the first flange and extends into the detection box, the receiving end box body is fixedly arranged at the bottom center of the detection box through a second flange, the receiving end box body is provided with a second compressed air pipeline for providing cooling and purging air for the receiving end box body, a receiving end extension pipeline is arranged at the top of the receiving end box body, the receiving end extension pipeline penetrates through the second flange and extends into the detection box, and the receiving end extension pipeline is arranged opposite to the transmitting end extension pipeline.
Optionally, monitoring system still includes temperature auxiliary monitoring module, temperature auxiliary monitoring module includes thermocouple, steel pipe and intelligence patrols and examines the appearance, the thermocouple is provided with a plurality ofly, and a plurality of thermocouples evenly set up on the steel pipe, through the steel pipe is fixed to be set up on the passageway cross-section between the high temperature section heat transfer module of flue and low temperature section heat transfer module for real-time supervision smoke and dust temperature, thermocouple electric connection the appearance is patrolled and examined to intelligence, intelligence is patrolled and examined the appearance and is passed through RS485 communication cable and connect the industrial computer.
The invention also provides a TDLAS extraction type tubular smoke cooler leakage monitoring method which is applied to the TDLAS extraction type tubular smoke cooler leakage monitoring system and comprises the following steps:
step 1: acquiring TDLAS original data and temperature original data through a monitoring system, wherein an average value is taken every 5 minutes for each measuring point;
step 2: comparing the average data of a single measuring point within one continuous hour with a dynamic standard value and an absolute value respectively;
and step 3: if the average data of the single measuring point within one continuous hour is judged to be less than the data of the dynamic standard value by more than 10, or the average data of the single measuring point within one continuous hour is judged to be less than the data of the absolute value by more than 10, the duration is judged, whether the duration is more than 5 hours is judged, if the duration is more than 5 hours, the data of other sensors of the flue is judged, if the number of the sensors meeting the conditions is more than 3, the flue is judged to be leaked, and early warning is carried out through an intelligent early warning module.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention provides a TDLAS extraction type tubular smoke cooler leakage monitoring system and a method, the system is provided with an intelligent early warning module, a data processing and display module, a sample analysis module and a sample collection module, the sample collection module collects smoke gas in a flue of the tubular smoke cooler, the sample analysis module emits modulated laser through a TDLAS control box and transmits the laser to a collimator through optical fibers, the laser penetrates through a detection box and is received by a photoelectric detector and transmitted back to the TDLAS control box, wherein, when the laser penetrates through the detection box, the laser is absorbed by water vapor, absorption is obtained through comparison of incident laser and emergent laser, and then the water vapor concentration is obtained through calculation of the absorption, wherein, an emitting end box body and a receiving end box body of the sample analysis module are connected with the detection box through flanges, and extension pipelines are arranged on the emitting end box body and the receiving end box body and extend into the detection box, the distance is flue gas interference, the signal-to-noise ratio of the whole system is improved, and the transmitting end box body and the receiving end box body are provided with compressed air pipelines which can provide cooling and blowing air; the system is also provided with an auxiliary temperature monitoring module, the auxiliary temperature monitoring module comprises thermocouples, a steel pipe and an intelligent patrol instrument, the thermocouples are uniformly arranged on the steel pipe, and the steel pipe is fixed on the section of the flue, so that the aim of detecting the temperature of the flue gas in real time can be fulfilled; the method comprises the steps of collecting TDLAS original data and temperature original data through a monitoring system, wherein each measuring point takes an average value every 5 minutes, average value data of a single measuring point within one continuous hour are respectively compared with a dynamic standard value and an absolute value, if the average value data of the single measuring point within one continuous hour are judged to be less than the dynamic standard value and more than 10, or the average value data of the single measuring point within one continuous hour are judged to be less than the absolute value and more than 10, duration time is judged, whether the duration time exceeds 5 hours or not is judged, if the duration time exceeds 10, other sensor data of the flue are judged, if the sensors meeting conditions exceed 3, the flue is judged to be leaked, and early warning is carried out through an intelligent early warning module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of a TDLAS extraction type tubular smoke cooler leakage monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a sample collection module;
FIG. 3 is a schematic structural diagram of an intelligent early warning module and a data processing and display module;
FIG. 4 is a schematic view of the structure of the detection box;
FIG. 5 is a schematic structural diagram of a temperature-assisted monitoring module;
FIG. 6 is a schematic flow chart of a TDLAS extraction type tubular smoke cooler leakage monitoring method according to an embodiment of the present invention;
FIG. 7 is a schematic view of a laser measurement in a detection chamber.
Reference numerals: 1. an intelligent early warning module; 2. a data processing and display module; 3. a sample analysis module; 4. a sample collection module; 5. a flue; 6. a detection box; 7. a sampling tube; 8. a transmitting end box body; 9. a receiving end box body; 10. a collimator; 11. a photodetector; 12. a communication converter; 13. a TDLAS control box; 14. an industrial personal computer; 15. a UPS; 16. a local control cabinet; 17. a photodetector power supply box; 18. an air switch; 19. a power source; 20. a DCS display module; 21. a power strip; 22. a first compressed air line; 23. a second compressed air line; 24. a first flange; 25. a second flange; 26. the transmitting end extends the pipeline; 27. the receiving end lengthens the pipeline; 28. a temperature auxiliary monitoring module; 29. appearance is patrolled and examined to intelligence.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a TDLAS extraction type tubular smoke cooler leakage monitoring system and method, which are high in measurement accuracy, avoid the condition that the leakage of a tubular smoke cooler cannot be monitored due to overlarge load or poor flue environment and can be monitored in real time.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the TDLAS extraction type tubular smoke cooler leakage monitoring system provided by the embodiment of the present invention includes: the intelligent early warning system comprises an intelligent early warning module 1, a data processing and displaying module 2, a sample analyzing module 3 and a sample collecting module 4, wherein the sample collecting module 4 is connected with the sample analyzing module 3, the sample analyzing module 3 is connected with the data processing and displaying module 2, and the data processing and displaying module 2 is connected with the intelligent early warning module 1;
the sample collection module 4 is used for collecting a flue gas sample in a flue of the tubular flue gas cooler;
the sample analysis module 3 is used for analyzing the collected flue gas sample;
the data processing and displaying module 5 is used for processing and displaying the data analyzed by the sample analyzing module;
the intelligent early warning module 1 is used for carrying out intelligent early warning according to a data processing result.
As shown in fig. 2 and 4, the sample collection module 4 includes a detection box 6, a sampling tube 7, a sampling centrifugal fan and a cyclone dust collector, the left and right sides of the detection box 6 are connected with the flue 5 of the tubular smoke cooler in a circulating manner through the sampling tube 7, the sampling tube 7 and the inlet of the detection box 6 are provided with the sampling centrifugal fan and the cyclone dust collector for realizing smoke collection and impurity filtering, the sampling centrifugal fan and the cyclone dust collector are electrically connected with the data processing and display module 2, smoke is sucked into the detection box 6 from the inlet through the centrifugal fan and returns to the flue 5 from the outlet, the smoke in the detection box 6 and the flue 5 is communicated, and the real-time performance of monitoring is ensured.
As shown in fig. 3, the sample analysis module 3 includes a transmitting end box 8, a collimator 10, a photoelectric detector 11, an optical fiber line, a coaxial cable, and a receiving end box 9, the transmitting end box 8 and the receiving end box 9 are disposed on the upper and lower sides of the detection box 6, the collimator 10 is disposed inside the transmitting end box 8, the data processing and displaying module 2 is connected to the collimator 10 through the optical fiber line, the photoelectric detector 11 is disposed inside the receiving end box 9, the photoelectric detector 11 is electrically connected to the data processing and displaying module 2 through the coaxial cable, and the collimator 10 and the photoelectric detector 11 are disposed opposite to each other, so that the optical fiber smoothly passes through the smoke to achieve the detection purpose.
The data processing and display module comprises an on-site control cabinet 16, an industrial personal computer 14, a TDLAS control box 13, a UPS15 and a display, wherein the on-site control cabinet 16 is arranged on one side of the flue 5, the industrial personal computer 14, the TDLAS control box 13, the UPS15 and the display are all arranged inside the on-site control cabinet 16, the UPS15 is used for providing a power supply, the industrial personal computer 14 is connected with the TDLAS control box 13 and the display through a data transmission line, is connected with the sampling centrifugal fan and the cyclone dust collector through power lines and used for supplying power, the TDLAS control box 13 is connected with the collimator 10 through optical fiber lines and is connected with the photoelectric detector 11 through a coaxial cable;
the UPS15 is connected with the power strip 21 and the air switch 18 through 3 x 1.5 power lines, the air switch 18 is connected with the power supply 19 through 2 x 4 power lines, the power strip 21 is connected with the TDLAS control box 13, the industrial personal computer 14 and the photoelectric detector power box 17 through 3 x 0.7 power lines, and the photoelectric detector power box 17 is connected with the photoelectric detector 11 through 3 x 0.7 power lines.
The intelligent early warning module 1 comprises a communication converter 12, an RS485 communication cable, a DCS communication cable and a DCS display module 20, the industrial personal computer 14 is connected with the communication converter 12 through the RS485 communication cable, the communication converter 12 is connected with the DCS display module 20 through the DCS communication cable, raw data detected by a sensor is processed through data filtering processing, a high-frequency modulation algorithm and a photoelectric effect theory, then a micro-leakage warning logic algorithm is combined to monitor and early warn the leakage condition of a flue, four flues are taken as examples, the interface of the DCS display module needs to provide four points, the leakage condition (the switching value is 0 or 1) obtained through comprehensive judgment of a measuring system is early warned, and a worker can go to the corresponding flue to perform leakage condition investigation and determine the position of the leakage module after receiving early warning signals.
As shown in fig. 4, the transmitting end box 8 is fixedly arranged at the top center of the detection box 6 through a first flange 24, the transmitting end box 8 is provided with a first compressed air pipeline 22 for providing cooling and purging air to the transmitting end box 8, the bottom of the transmitting end box 8 is provided with a transmitting end extension pipeline 26, the transmitting end extension pipeline 26 passes through the first flange 24 and extends into the detection box 6, the receiving end box 9 is fixedly arranged at the bottom center of the detection box 6 through a second flange 25, the receiving end box 9 is provided with a second compressed air pipeline 23 for providing cooling and purging air to the receiving end box 9, the top of the receiving end box 9 is provided with a receiving end extension pipeline 27, the receiving end extension pipeline 27 passes through the second flange 25 and extends into the detection box 6, the receiving end extension pipeline 27 is arranged opposite to the transmitting end extension pipeline 26, wherein, extension pipeline stretches into detection case 10cm, and no flue gas is disturbed in this section distance, has improved the nature noise ratio of system.
As shown in fig. 7, during operation, modulated laser is emitted through the TDLAS control box, and is transmitted to the collimator through the optical fiber, and after the laser penetrates through the detection box, the laser is received by the photodetector and is transmitted back to the TDLAS control box, wherein when the laser penetrates through the detection box, the laser is absorbed by water vapor, absorption amount is obtained by comparing incident laser with emergent laser, and then water vapor concentration is obtained by calculating the absorption amount, and whether the flue leaks can be judged according to the change of the water vapor concentration.
As shown in fig. 5, the monitoring system still includes temperature auxiliary monitoring module 28, temperature auxiliary monitoring module 28 includes thermocouple, steel pipe and intelligent patrol instrument 29, the thermocouple is provided with a plurality ofly, and a plurality of thermocouples evenly set up on the steel pipe, through the steel pipe is fixed to be set up on the channel cross-section between the high temperature section heat transfer module of flue and the low temperature section heat transfer module for real-time supervision smoke and dust temperature, thermocouple electric connection the intelligent patrol instrument 29, intelligent patrol instrument 29 passes through RS485 communication cable connection industrial computer 14, wherein the aperture of steel pipe is phi 55mm, and length is 3350mm, and the quantity of thermocouple is 16, and the electric potential signal that the thermocouple surveyed turns into digital signal through intelligent patrol instrument, participates in the alarm logic and judges through the industrial computer that 485 RS communication cable transmitted to the local control cabinet.
Compared with the traditional water level monitoring scheme, the monitoring precision and timeliness are greatly improved, concentration detection is carried out on the TDLAS technology through resonance absorption of gas to specific laser, the measuring precision is extremely high, the lower measuring limit can reach the ppm level, therefore, extremely small concentration change can be monitored, and the monitoring technology is far higher than the traditional water level monitoring scheme in the aspect of the detecting precision.
The smoke collection and monitoring are carried out through the detection box, the detection box is smaller than the flue, the width is generally 0.6m, no matter how complex the environment of the flue is, the penetration laser can be clearly received through photoelectric detection, in addition, the detection box has no vibration or has small vibration intensity, the measurement of the detection box cannot be influenced, in addition, the detection box has less smoke dust relative to the flue, meanwhile, the cleaning of a lens by a worker is more convenient, the invention can also realize multi-point monitoring, when monitoring points need to be added, sampling can be carried out at corresponding points of the flue, the sampling is sent into the installed detection box, the smoke at different points is measured in a time-sharing measuring mode, the cost of a plurality of detection devices is reduced, and the economic benefit is improved; the invention adopts temperature auxiliary monitoring, and the leakage in the flue can cause the change of the temperature of the flue besides the change of the concentration of water vapor, so that the measurement result is more accurate.
As shown in fig. 6, the present invention further provides a TDLAS extraction type tubular smoke cooler leakage monitoring method, which is applied to the TDLAS extraction type tubular smoke cooler leakage monitoring system, and comprises the following steps:
step 1: acquiring TDLAS original data and temperature original data through a monitoring system, wherein an average value is taken every 5 minutes for each measuring point;
step 2: comparing the average data (wherein, once every 5 minutes, 12 in total) of a single measuring point within one continuous hour with a dynamic standard value and an absolute value respectively, wherein the dynamic standard value means that 20 data are generated by 20 sensors every five minutes in the past hour, after the highest value and the lowest value of the 20 data are removed, carrying out arithmetic mean on the 20 data, obtaining 12 results, and then carrying out arithmetic mean on the 12 data, wherein the absolute value of the water vapor concentration is 25mol/L, and the absolute value of the temperature data is 115 ℃;
and step 3: if the average data of a single measuring point within one continuous hour is judged to be less than the data of a dynamic standard value (20mol/L or 5 ℃) for more than 10, or the average data of the single measuring point within one continuous hour is judged to be less than the data of an absolute value for more than 10, the duration is judged, whether the duration is more than 5 hours is judged, if so, the data of other sensors of the flue is judged, if the number of the sensors meeting the conditions is more than 3, the flue leakage is judged, and the intelligent early warning module is used for early warning.
The invention provides a TDLAS extraction type tubular smoke cooler leakage monitoring system and a method, the system is provided with an intelligent early warning module, a data processing and display module, a sample analysis module and a sample collection module, the sample collection module collects smoke gas in a flue of the tubular smoke cooler, the sample analysis module emits modulated laser through a TDLAS control box and transmits the laser to a collimator through optical fibers, the laser penetrates through a detection box and is received by a photoelectric detector and transmitted back to the TDLAS control box, wherein, when the laser penetrates through the detection box, the laser is absorbed by water vapor, absorption is obtained through comparison of incident laser and emergent laser, and then the water vapor concentration is obtained through calculation of the absorption, wherein, an emitting end box body and a receiving end box body of the sample analysis module are connected with the detection box through flanges, and extension pipelines are arranged on the emitting end box body and the receiving end box body and extend into the detection box, the distance is flue gas interference, the signal-to-noise ratio of the whole system is improved, and the transmitting end box body and the receiving end box body are provided with compressed air pipelines which can provide cooling and blowing air; the system is also provided with an auxiliary temperature monitoring module, the auxiliary temperature monitoring module comprises thermocouples, a steel pipe and an intelligent patrol instrument, the thermocouples are uniformly arranged on the steel pipe, and the steel pipe is fixed on the section of the flue, so that the aim of detecting the temperature of the flue gas in real time can be fulfilled; the method comprises the steps of collecting TDLAS original data and temperature original data through a monitoring system, wherein each measuring point takes an average value every 5 minutes, average value data of a single measuring point within one continuous hour are respectively compared with a dynamic standard value and an absolute value, if the average value data of the single measuring point within one continuous hour are judged to be less than the dynamic standard value and more than 10, or the average value data of the single measuring point within one continuous hour are judged to be less than the absolute value and more than 10, duration time is judged, whether the duration time exceeds 5 hours or not is judged, if the duration time exceeds 10, other sensor data of the flue are judged, if the sensors meeting conditions exceed 3, the flue is judged to be leaked, and early warning is carried out through an intelligent early warning module.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The utility model provides a TDLAS extraction formula tubular cigarette cooler leakage monitoring system which characterized in that includes: the intelligent early warning system comprises an intelligent early warning module, a data processing and displaying module, a sample analyzing module and a sample collecting module, wherein the sample collecting module is connected with the sample analyzing module, the sample analyzing module is connected with the data processing and displaying module, and the data processing and displaying module is connected with the intelligent early warning module;
the sample collection module is used for collecting a flue gas sample in a flue of the tubular flue gas cooler;
the sample analysis module is used for analyzing the collected flue gas sample;
the data processing and displaying module is used for processing and displaying the data analyzed by the sample analyzing module;
the intelligent early warning module is used for carrying out intelligent early warning according to a data processing result.
2. The TDLAS extraction type tubular smoke cooler leakage monitoring system of claim 1, wherein the sample collection module comprises a detection box, a sampling tube, a sampling centrifugal fan and a cyclone dust collector, the left and right sides of the detection box are connected with the flue of the tubular smoke cooler in a circulating mode through the sampling tube, the sampling tube is arranged at the inlet of the detection box, the sampling centrifugal fan and the cyclone dust collector are used for achieving smoke collection and impurity filtering, and the sampling centrifugal fan and the cyclone dust collector are electrically connected with the data processing and displaying module.
3. The TDLAS extraction type tubular smoke cooler leakage monitoring system of claim 2, wherein the sample analysis module comprises an emission end box, a collimator, a photoelectric detector, an optical fiber line, a coaxial cable and a receiving end box, the emission end box and the receiving end box are relatively arranged on the upper and lower sides of the detection box, the collimator is arranged inside the emission end box, the data processing and display module is connected with the optical fiber line, the photoelectric detector is arranged inside the receiving end box, the photoelectric detector is electrically connected with the data processing and display module through the coaxial cable, and the collimator is arranged with the photoelectric detector relatively.
4. The TDLAS extraction type tubular smoke cooler leakage monitoring system of claim 3, wherein the data processing and display module comprises an on-site control cabinet, an industrial personal computer, a TDLAS control box, a UPS and a display, the on-site control cabinet is arranged on one side of the flue, the industrial personal computer, the TDLAS control box, the UPS and the display are all arranged inside the on-site control cabinet, the UPS is used for providing power, the industrial personal computer connects the TDLAS control box and the display through a data transmission line, and is connected through a power line to the sampling centrifugal fan and the cyclone dust collector for supplying power, the TDLAS control box is connected through an optical fiber line to the collimator, and is connected through a coaxial cable to the photoelectric detector.
5. The TDLAS extraction type tubular smoke cooler leakage monitoring system of claim 4, wherein the intelligent early warning module comprises a communication converter, an RS485 communication cable, a DCS communication cable and a DCS display module, the industrial personal computer is connected with the communication converter through the RS485 communication cable, and the communication converter is connected with the DCS display module through the DCS communication cable.
6. The TDLAS extraction type tubular smoke cooler leakage monitoring system as claimed in claim 3, characterized in that the transmitting end box is fixed by a first flange at the top center of the detection box, the transmitting end box is provided with a first compressed air pipeline for providing cooling and purging air for the transmitting end box, the bottom of the transmitting end box is provided with a transmitting end extension pipeline which passes through the first flange and extends into the detection box, the receiving end box is fixed by a second flange at the bottom center of the detection box, the receiving end box is provided with a second compressed air pipeline for providing cooling and purging air for the receiving end box, the top of the receiving end box is provided with a receiving end extension pipeline which passes through the second flange and extends into the detection box, the receiving end extension pipeline and the transmitting end extension pipeline are arranged oppositely.
7. The TDLAS extraction type tubular smoke cooler leakage monitoring system according to claim 1, further comprising a temperature auxiliary monitoring module, wherein the temperature auxiliary monitoring module comprises a thermocouple, a steel tube and an intelligent patrol inspection instrument, the thermocouple is provided with a plurality of thermocouples, the thermocouples are evenly arranged on the steel tube, the steel tube is fixedly arranged on a channel section between a high-temperature section heat exchange module and a low-temperature section heat exchange module of the flue and used for monitoring smoke temperature in real time, the thermocouples are electrically connected with the intelligent patrol inspection instrument, and the intelligent patrol inspection instrument is connected with the industrial personal computer through an RS485 communication cable.
8. A TDLAS extraction tubular smoke cooler leakage monitoring method applied to the TDLAS extraction tubular smoke cooler leakage monitoring system as claimed in any one of claims 1 to 7, comprising the steps of:
step 1: acquiring TDLAS original data and temperature original data through a monitoring system, wherein an average value is taken every 5 minutes for each measuring point;
and 2, step: comparing the average data of a single measuring point within one hour with a dynamic standard value and an absolute value respectively;
and step 3: if the average data of the single measuring point within one continuous hour is judged to be less than the data of the dynamic standard value by more than 10, or the average data of the single measuring point within one continuous hour is judged to be less than the data of the absolute value by more than 10, the duration is judged, whether the duration is more than 5 hours is judged, if the duration is more than 5 hours, the data of other sensors of the flue is judged, if the number of the sensors meeting the conditions is more than 3, the flue is judged to be leaked, and early warning is carried out through an intelligent early warning module.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529227Y (en) * | 2002-03-04 | 2003-01-01 | 曾令可 | Device for measuring variation of dynamic temp. of wide cross-section furnace intersecting surface |
| WO2006022550A2 (en) * | 2004-08-25 | 2006-03-02 | Norsk Elektro Optikk As | Gas monitor |
| CN108896510A (en) * | 2018-05-11 | 2018-11-27 | 华南理工大学 | A kind of SCR outlet ammonia concentration plane distribution on-line detecting system and method |
| CN109309376A (en) * | 2017-07-26 | 2019-02-05 | 新特能源股份有限公司 | Reduction furnace power ground protective device and method |
| CN110907105A (en) * | 2019-12-27 | 2020-03-24 | 杭州梅格森测控技术有限公司 | TDLAS-based flue economizer leakage detection device and detection method |
| CN110907394A (en) * | 2019-12-02 | 2020-03-24 | 光钙(上海)高科技有限公司 | Heat tracing extraction type TDLAS gas analysis system and method |
| AU2020101293A4 (en) * | 2019-07-09 | 2020-08-13 | Anhui University of Science and Technology | Artificial intelligence detection system for deep-buried fuel gas pipeline leakage |
| CN113218592A (en) * | 2021-02-26 | 2021-08-06 | 雷蒙特(杭州)科技有限公司 | Method and system for monitoring leakage of tubular GGH of power plant boiler |
| CN113588179A (en) * | 2021-06-24 | 2021-11-02 | 武汉众智鸿图科技有限公司 | Water supply pipe network leakage detection method and system |
| CN215066098U (en) * | 2021-04-09 | 2021-12-07 | 浙江浙能嘉华发电有限公司 | Steam detection device of flue gas heat exchanger |
-
2022
- 2022-03-16 CN CN202210260491.8A patent/CN114562685A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529227Y (en) * | 2002-03-04 | 2003-01-01 | 曾令可 | Device for measuring variation of dynamic temp. of wide cross-section furnace intersecting surface |
| WO2006022550A2 (en) * | 2004-08-25 | 2006-03-02 | Norsk Elektro Optikk As | Gas monitor |
| CN109309376A (en) * | 2017-07-26 | 2019-02-05 | 新特能源股份有限公司 | Reduction furnace power ground protective device and method |
| CN108896510A (en) * | 2018-05-11 | 2018-11-27 | 华南理工大学 | A kind of SCR outlet ammonia concentration plane distribution on-line detecting system and method |
| AU2020101293A4 (en) * | 2019-07-09 | 2020-08-13 | Anhui University of Science and Technology | Artificial intelligence detection system for deep-buried fuel gas pipeline leakage |
| CN110907394A (en) * | 2019-12-02 | 2020-03-24 | 光钙(上海)高科技有限公司 | Heat tracing extraction type TDLAS gas analysis system and method |
| CN110907105A (en) * | 2019-12-27 | 2020-03-24 | 杭州梅格森测控技术有限公司 | TDLAS-based flue economizer leakage detection device and detection method |
| CN113218592A (en) * | 2021-02-26 | 2021-08-06 | 雷蒙特(杭州)科技有限公司 | Method and system for monitoring leakage of tubular GGH of power plant boiler |
| CN215066098U (en) * | 2021-04-09 | 2021-12-07 | 浙江浙能嘉华发电有限公司 | Steam detection device of flue gas heat exchanger |
| CN113588179A (en) * | 2021-06-24 | 2021-11-02 | 武汉众智鸿图科技有限公司 | Water supply pipe network leakage detection method and system |
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