CN114413247A - Boiler combustion heating surface overtemperature monitoring and active inhibition system - Google Patents
Boiler combustion heating surface overtemperature monitoring and active inhibition system Download PDFInfo
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- CN114413247A CN114413247A CN202210044781.9A CN202210044781A CN114413247A CN 114413247 A CN114413247 A CN 114413247A CN 202210044781 A CN202210044781 A CN 202210044781A CN 114413247 A CN114413247 A CN 114413247A
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- boiler
- heating surface
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- overtemperature
- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/38—Determining or indicating operating conditions in steam boilers, e.g. monitoring direction or rate of water flow through water tubes
Abstract
The invention relates to the technical field of overtemperature monitoring of a heating surface of a boiler and discloses an overtemperature monitoring and active inhibition system for a combustion heating surface of the boiler. The overtemperature monitoring and active inhibiting system for the boiler combustion heating surface can effectively improve the overtemperature monitoring precision of the boiler heating surface, also can effectively improve the timeliness of active inhibition after the overtemperature of the boiler combustion heating surface is exceeded, realizes active inhibition of wall temperature overtemperature of the boiler heating surface, obviously improves overtemperature risk of the boiler heating surface, not only improves the service life of the boiler heating surface, but also improves the safety and reliability of boiler work and improves the stability of power plant operation.
Description
Technical Field
The invention relates to the technical field of overtemperature monitoring of a boiler heating surface, in particular to an overtemperature monitoring and active suppression system for a boiler combustion heating surface.
Background
The heating surface of the boiler mainly refers to a medium surface for absorbing heat and transferring heat, and water-cooled walls, superheaters, reheaters and economizer heating surface tubes for correspondingly completing tasks of preheating, evaporating, superheating and reheating of feed water.
The condition that the temperature monitoring precision is poor exists in the overtemperature monitoring of the heating surface of the boiler of the existing power plant, and the condition that the active inhibition is not timely after the overtemperature of the combustion heating surface of the boiler exists, so that the combustion heating surface of the boiler is easily damaged by high temperature, the service life of the heating surface of the boiler is influenced, the safety and reliability of the work of the boiler are also influenced, and the stability of the operation of the power plant is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a boiler combustion heating surface overtemperature monitoring and active inhibition system which has the advantages of effectively improving the overtemperature monitoring precision of a boiler heating surface, remarkably improving the overtemperature risk of the boiler heating surface, prolonging the service life of the boiler heating surface, ensuring high working safety and reliability of the boiler, improving the operation stability of a power plant, and solving the problems that the overtemperature monitoring precision of the boiler heating surface of the power plant is poor, the active inhibition is not timely after the overtemperature of the boiler combustion heating surface is exceeded, the boiler combustion heating surface is easily damaged by high temperature, the service life of the boiler heating surface is influenced, the safety and reliability of the boiler work are influenced, and the operation stability of the power plant is influenced.
In order to effectively improve the monitoring precision of the overtemperature of the heating surface of the boiler, effectively improve the timeliness of active inhibition after the overtemperature of the combustion heating surface of the boiler is improved, realize the active inhibition of the overtemperature of the wall temperature of the heating surface of the boiler, obviously improve the overtemperature risk of the heating surface of the boiler, prolong the service life of the heating surface of the boiler, improve the safety and reliability of the work of the boiler and improve the running stability of a power plant, the invention provides the following technical scheme: the utility model provides a boiler burning heating surface overtemperature monitoring and initiative suppression system, includes boiler wall temperature comprehensive detection module, boiler wall temperature comprehensive detection module's output has central control module through data line signal connection, central control module's output has high temperature initiative suppression module and big data analysis module through data line signal connection, big data analysis module's output has artificial intelligence prediction module through data line signal connection, artificial intelligence prediction module's output passes through data line and central control module's input electric connection, central control module's input has boiler intermediate point temperature feedback module through data line electric connection.
Preferably, the high-temperature active inhibition module comprises a desuperheating water cooling module and an over-fire air cooling module, the desuperheating water cooling module is installed at the top of the heating surface of the boiler, and the over-fire air cooling module is installed at the bottom of the heating surface of the boiler.
Preferably, the desuperheating water cooling module comprises a spraying system installed at the top of the heating surface of the boiler, a water inlet of the spraying system is connected with a pipeline joint connected with a desuperheating water pipeline, the over-fire air cooling module comprises an air blowing system installed at the bottom of the heating surface of the boiler, and an air inlet at the bottom end of the air blowing system is connected with a fan fixedly connected with the over-fire air pipeline.
Preferably, the boiler wall temperature comprehensive detection module comprises three groups of comprehensive temperature measurement structures, and the three groups of comprehensive temperature measurement structures are respectively installed at the top, the middle and the bottom of the heating surface of the boiler.
Preferably, comprehensive temperature measurement structure is including thermal-insulated installing frame, a plurality of fixed through-holes have been seted up to the inner wall of thermal-insulated installing frame, and fixed through-hole's pore wall fixedly connected with laser temperature sensor, and is a plurality of laser temperature sensor's output all has the controller through the common electric connection of wire, the output of controller passes through wire and central control module's output electric connection.
Preferably, the output end of the artificial intelligence prediction module is electrically connected with a plurality of evaluation modules through data lines, and the evaluation modules respectively represent overtemperature measuring point data, external influence factors of the boiler, a historical wall temperature database of the boiler, the change trend of wall temperature measuring points, the thinning of a water wall and the oxidation peeling degree.
Preferably, the device of the boiler intermediate point temperature feedback module is a wall temperature on-site measuring device.
Preferably, the device of the central control module is an intelligent central control system host.
Compared with the prior art, the invention provides an overtemperature monitoring and active inhibiting system for a combustion heating surface of a boiler, which has the following beneficial effects:
1. the boiler combustion heating surface overtemperature monitoring and active inhibiting system is provided with a boiler wall temperature comprehensive detection module, the boiler wall temperature comprehensive detection module is used for independently monitoring the temperature of the top, the middle and the bottom of a boiler heating surface through a comprehensive temperature measuring structure, in addition, the temperature monitoring of each position is simultaneously and comprehensively monitored through a plurality of laser temperature sensors, finally, the average value of the temperature of one position of the boiler heating surface is calculated through a controller and the plurality of laser temperature sensors, then, the average value of the temperature is conveyed to a central control module, the central control module makes a next reaction according to the average temperature, and the mechanism can effectively improve the overtemperature monitoring accuracy of the boiler heating surface.
2. The boiler combustion heating surface overtemperature monitoring and active inhibition system is provided with a big data analysis module, an artificial intelligence prediction module, a high temperature active inhibition module and a central control module, after the boiler wall temperature comprehensive detection module transmits average temperature data to the central control module, the central control module analyzes the average temperature data through the big data analysis module by utilizing the correlation of wall temperature change between the same heating surface internal measuring point and different heating surfaces on time and space, meanwhile, the artificial intelligence prediction module comprehensively evaluates the wall temperature data, wall temperature measuring point change trend, water wall thinning and oxidation peeling degrees according to the analysis result and the overtemperature measuring point data of the big data analysis module, external influence factors of the boiler, a boiler historical wall temperature database, the wall temperature measuring point change trend, and the water wall thinning and oxidation peeling degrees, and realizes the wall temperature overtemperature risk prediction and early warning which are advanced by 1min, and then the artificial intelligence prediction module feeds back the prediction result to the central control module, the central control module controls the high-temperature active inhibition module to work, the desuperheating water cooling module of the high-temperature active inhibition module rapidly cools the top of the heating surface of the boiler, the over-fire air cooling module rapidly cools the bottom of the heating surface of the boiler, and the effect of the over-temperature active inhibition of the combustion heating surface of the boiler is fed back in time through the boiler middle point temperature feedback module.
Drawings
FIG. 1 is a schematic structural diagram of a boiler combustion heating surface overtemperature monitoring and active suppression system according to the present invention;
FIG. 2 is a schematic view of a partial structure of a boiler combustion heating surface overtemperature monitoring and active suppression system according to the present invention.
In the figure: the system comprises a boiler wall temperature comprehensive detection module 1, a central control module 2, a high temperature active inhibition module 3, a desuperheating water cooling module 31, an over-fire air cooling module 32, a big data analysis module 4, an artificial intelligence prediction module 5, overtemperature measuring point data 51, boiler external influence factors 52, a boiler historical wall temperature database 53, a wall temperature measuring point change trend 54, a water cooling wall thinning and oxidation peeling degree 55, a boiler middle point temperature feedback module 6, a comprehensive temperature measurement structure 7, a heat insulation mounting frame 71, a laser temperature sensor 72 and a controller 73.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Referring to fig. 1-2, a boiler combustion heating surface overtemperature monitoring and active suppression system comprises a boiler wall temperature comprehensive detection module 1, an output end of the boiler wall temperature comprehensive detection module 1 is connected with a central control module 2 through a data line signal, an output end of the central control module 2 is connected with a high-temperature active suppression module 3 and a big data analysis module 4 through a data line signal, an output end of the big data analysis module 4 is connected with an artificial intelligence prediction module 5 through a data line signal, an output end of the artificial intelligence prediction module 5 is electrically connected with an input end of the central control module 2 through a data line, and an input end of the central control module 2 is electrically connected with a boiler intermediate point temperature feedback module 6 through a data line.
The high-temperature active inhibition module 3 comprises a desuperheating water cooling module 31 and an over-fire air cooling module 32, wherein the desuperheating water cooling module 31 is installed at the top of the heating surface of the boiler, and the over-fire air cooling module 32 is installed at the bottom of the heating surface of the boiler.
The boiler wall temperature comprehensive detection module 1 comprises three groups of comprehensive temperature measurement structures 7, wherein the three groups of comprehensive temperature measurement structures 7 are respectively installed at the top, the middle and the bottom of a heating surface of a boiler and respectively detect the temperature of the omnibearing boiler wall of the boiler.
The comprehensive temperature measuring structure 7 comprises a heat insulation mounting frame 71, a plurality of fixing through holes are formed in the inner wall of the heat insulation mounting frame 71, the hole walls of the fixing through holes are fixedly connected with laser temperature sensors 72, the output ends of the laser temperature sensors 72 are electrically connected with a controller 73 through wires, the output end of the controller 73 is electrically connected with the output end of the central control module 2 through wires, and the mechanism can effectively improve the accuracy of overtemperature monitoring of the heating surface of the boiler.
The output end of the artificial intelligent prediction module 5 is electrically connected with a plurality of evaluation modules through data lines, the evaluation modules are respectively overtemperature point data 51, boiler external influence factors 52, a boiler historical wall temperature database 53, a wall temperature point variation trend 54 and a water wall thinning and oxidation peeling degree 55, the intelligent prediction module carries out comprehensive evaluation according to the analysis result of the big data analysis module, the overtemperature point data, the boiler external influence factors, the boiler historical wall temperature database, the wall temperature point variation trend, the water wall thinning and the oxidation peeling degree, and wall temperature overtemperature risk prediction and early warning are achieved 1min in advance.
The device of the boiler intermediate point temperature feedback module 6 is a wall temperature on-site measuring device which can feed back the overtemperature suppression result in time.
The equipment of the central control module 2 is an intelligent central control system host which can control the whole reliable operation of the system.
The desuperheating water cooling module 31 comprises a spraying system arranged at the top of a heated surface of the boiler, a water inlet of the spraying system is connected with a pipeline joint connected with a desuperheating water pipeline, the over-fire air cooling module 32 comprises a blowing system arranged at the bottom of the heated surface of the boiler, an air inlet at the bottom end of the blowing system is connected with a fan fixedly connected with the over-fire air pipeline, and the desuperheating water cooling module 31 and the over-fire air cooling module 32 can timely and actively inhibit the over-temperature of the heated surface of the boiler, rapidly cool the heated surface of the boiler and ensure the working stability of the boiler.
In summary, when the system for monitoring and actively suppressing the overtemperature of the combustion heating surface of the boiler works, firstly, the comprehensive boiler wall temperature detection module 1 monitors the temperature of the top, the middle and the bottom of the heating surface of the boiler independently through the comprehensive temperature measurement structure 7, each position temperature is monitored simultaneously and comprehensively through the plurality of laser temperature sensors 72, finally, the average value of the temperature of one position of the heating surface of the boiler is calculated through the controller 73 and the plurality of laser temperature sensors 72, then, the average value of the temperature is transmitted to the central control module 2, then, the central control module 2 analyzes the data of the average temperature through the big data analysis module 4 by utilizing the correlation of the wall temperature change between the internal measuring point of the same heating surface and different heating surfaces on time and space, and meanwhile, the artificial intelligence prediction module 5 analyzes the data 51, 51 and, The external influence factors 52 of the boiler, a historical wall temperature database 53 of the boiler, the variation trend 54 of wall temperature measuring points, the thinning and the oxidation peeling degree 55 of a water-cooled wall are comprehensively evaluated, the prediction and early warning of the wall temperature overtemperature risk which is advanced by 1min are realized, then an artificial intelligent prediction module 5 feeds back the prediction result to a central control module 2, the central control module 2 timely controls a high-temperature active inhibition module 3 to work, a desuperheating water cooling module 31 of the high-temperature active inhibition module 3 quickly cools the top of a heating surface of the boiler, an over-fire air cooling module 32 quickly cools the bottom of the heating surface of the boiler, and the overtemperature active inhibition effect of the combustion heating surface of the boiler is timely fed back through a middle point temperature feedback module 6 of the boiler, so that the mechanism can effectively improve the overtemperature monitoring accuracy of the heating surface of the boiler and can also effectively improve the timeliness of the active inhibition after the overtemperature of the combustion heating surface of the boiler, the active inhibition of the overtemperature of the wall temperature of the heating surface of the boiler is realized, the overtemperature risk of the heating surface of the boiler is obviously improved, the service life of the heating surface of the boiler is prolonged, the safety and reliability of the work of the boiler are improved, and the running stability of a power plant is improved.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a boiler burning heating surface overtemperature monitoring and initiative suppression system, a serial communication port, including boiler wall temperature comprehensive detection module (1), the output of boiler wall temperature comprehensive detection module (1) has central control module (2) through data line signal connection, the output of central control module (2) has high temperature initiative suppression module (3) and big data analysis module (4) through data line signal connection, the output of big data analysis module (4) has artificial intelligence prediction module (5) through data line signal connection, the input electric connection of data line and central control module (2) is passed through to the output of artificial intelligence prediction module (5), the input of central control module (2) has boiler intermediate point temperature feedback module (6) through data line electric connection.
2. The system for monitoring and actively suppressing the overtemperature of the combustion heating surface of the boiler as claimed in claim 1, wherein the high-temperature active suppression module (3) comprises a desuperheating water cooling module (31) and an over-fire air cooling module (32), the desuperheating water cooling module (31) is installed at the top of the heating surface of the boiler, and the over-fire air cooling module (32) is installed at the bottom of the heating surface of the boiler.
3. The system for monitoring and actively suppressing overtemperature of a combustion heating surface of a boiler as claimed in claim 2, wherein the desuperheating water cooling module (31) comprises a spraying system arranged at the top of the heating surface of the boiler, a pipeline joint connected with a desuperheating water pipeline is connected to a water inlet of the spraying system, the over-fire air cooling module (32) comprises an air blowing system arranged at the bottom of the heating surface of the boiler, and an air inlet at the bottom end of the air blowing system is connected with a fan fixedly connected with the over-fire air pipeline.
4. The system for monitoring and actively suppressing the overtemperature of the combustion heating surface of the boiler as claimed in claim 1, wherein the boiler wall temperature comprehensive detection module (1) comprises three groups of comprehensive temperature measurement structures (7), and the three groups of comprehensive temperature measurement structures (7) are respectively arranged at the top, the middle and the bottom of the heating surface of the boiler.
5. The system for monitoring and actively suppressing the overtemperature of the heating surface of the boiler as claimed in claim 4, wherein the comprehensive temperature measurement structure (7) comprises a heat insulation mounting frame (71), a plurality of fixing through holes are formed in the inner wall of the heat insulation mounting frame (71), the wall of each fixing through hole is fixedly connected with a laser temperature sensor (72), the output ends of the laser temperature sensors (72) are electrically connected with a controller (73) through a wire, and the output end of the controller (73) is electrically connected with the output end of the central control module (2) through a wire.
6. The system for monitoring and actively suppressing the overtemperature of the combustion heating surface of the boiler as claimed in claim 1, wherein the output end of the artificial intelligence prediction module (5) is electrically connected with a plurality of evaluation modules through a data line, and the evaluation modules are respectively overtemperature point data (51), external influence factors (52) of the boiler, a historical wall temperature database (53) of the boiler, a wall temperature point variation trend (54), a water wall thinning degree and an oxidation peeling degree (55).
7. The system for monitoring and actively suppressing the overtemperature of the combustion heating surface of the boiler as recited in claim 1, characterized in that the device of the boiler intermediate point temperature feedback module (6) is a wall temperature in-situ measuring device.
8. The system for monitoring and actively suppressing overtemperature of a boiler combustion heating surface as recited in claim 1, characterized in that the device of the central control module (2) is an intelligent central control system host.
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