CN210197322U - Intelligent soot blowing system for boiler furnace - Google Patents
Intelligent soot blowing system for boiler furnace Download PDFInfo
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- CN210197322U CN210197322U CN201920718360.3U CN201920718360U CN210197322U CN 210197322 U CN210197322 U CN 210197322U CN 201920718360 U CN201920718360 U CN 201920718360U CN 210197322 U CN210197322 U CN 210197322U
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Abstract
The utility model provides a boiler furnace intelligence soot blowing system, boiler furnace intelligence soot blowing system includes sound wave temperature measurement subassembly, control assembly and blows the ash subassembly, sound wave temperature measurement unit mount is in boiler furnace, blows the ash unit mount in boiler furnace, and sound wave temperature measurement subassembly with blow the ash subassembly and be connected with the control assembly electricity respectively, sound wave temperature measurement subassembly detects and calculates the temperature value of each region of boiler furnace and gives the control assembly with the temperature value transmission, and the control assembly blows the ash subassembly according to temperature value control. The advantages of such a device are: the soot blower of the boiler is optimally controlled to blow soot as required, so that the abrasion of the boiler tube wall and the steam consumption loss caused by unreasonable soot blowing are reduced.
Description
Technical Field
The utility model relates to a combustion apparatus intelligent control system technical field particularly, relates to a boiler furnace intelligence soot blowing system.
Background
In the working process of the boiler of the thermal power generating unit, when the boiler is used for burning solid fuel (such as coal) or liquid fuel containing ash, a large amount of fly ash is formed due to the fact that combustion products contain ash particles, sulfur oxide and other substances, and the amount of the fly ash of a 300MW boiler in every day and night can reach 700-1200 t (according to the ash content of coal). After the fly ash flows through convection heating surfaces such as a convection superheater, a reheater, an economizer, a water wall (four tubes) and the like in the boiler, one part of the fly ash is deposited on the heating surfaces in various forms, so that the heating surfaces are stained to form ash deposit, the heat transfer resistance is increased, high-temperature flue gas is generated, the normal operation of the boiler is influenced if the result is light, the power generation efficiency is reduced, and the load is reduced even the boiler is shut down unplanned if the result is heavy, so that the operation safety of the boiler and the unit availability are directly endangered.
In order to effectively remove ash on a heating surface, improve the heat absorption efficiency of a hearth and reduce the exhaust gas temperature, a power plant is generally provided with soot blowers at each heating surface of a boiler of a thermal power generating unit, wherein the soot blowers are ①, the problem that the boiler shutdown accident is caused by too much ash is avoided, ②, the problem that the boiler efficiency is reduced due to the increase of the total heat transfer resistance is avoided, ③, the ash deposition is reduced to corrode the boiler tube, ④, the ash deposition speed is reduced, the thermal deviation of the heating surface is reduced, the occurrence of the tube explosion accident is reduced, ⑤, the reduction of the power generation amount and the increased maintenance cost caused by frequent boiler shutdown maintenance is avoided, and ⑥, the labor intensity and the cost of manual ash removal are reduced.
At present, most of soot blowing of a power plant adopts the traditional timing soot blowing or manual soot blowing, the actual condition of soot deposition cannot be considered in the mode, and the soot blowing interval is often too long or too short. The ash blowing interval time is too long, so that the accumulated ash can be accumulated in quantity, an ash deposition layer is difficult to clean, and the ash blowing purpose cannot be achieved; and the soot blowing is carried out excessively frequently, so that on one hand, expensive soot blowing media are wasted, and the operation cost is increased, on the other hand, under the action of mechanical force and thermal fatigue, the service life of a heating surface is shortened, the service life of the soot blower is also shortened due to frequent use of the soot blower, and extra maintenance workload and cost overhead are increased. Because soot blowing is a factor influencing the operating economy of a boiler, how to realize economical and effective soot blowing becomes one of the problems concerned by science and technology personnel, and intelligent soot blowing is particularly important. In the prior art, some enterprises adopt means such as thermocouples or infrared radiation and combine with BP algorithm, RPROP algorithm and the like to realize on-line monitoring and calculation of the real-time flue gas temperature inside the boiler, but because the thermocouples are usually only provided with flue gas temperature measuring points on the heating surface at the tail of the boiler, and other parts such as a hearth outlet, a high-temperature convection area and the like, the thermocouples arranged in the area cannot normally work for a long time due to the severe working environment, the flue gas temperatures of the parts cannot be monitored in real time.
In view of the foregoing, it is desirable to provide an intelligent soot blowing system for a boiler furnace, which can overcome the drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a boiler furnace intelligence soot blower system, it can overcome prior art's defect. The purpose of the utility model can be realized through the following technical scheme.
The utility model discloses an embodiment provides a boiler furnace intelligence soot blowing system, boiler furnace intelligence soot blowing system includes sound wave temperature measurement subassembly, control assembly and soot blowing subassembly, sound wave temperature measurement unit mount is in boiler furnace, and soot blowing unit mount is in boiler furnace, and sound wave temperature measurement subassembly with blow the soot assembly and be connected with the control assembly electricity respectively, sound wave temperature measurement subassembly detect and calculate each regional temperature value of boiler furnace and give control assembly with the temperature value transmission, control assembly blows the soot assembly and blows the soot according to temperature value control.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blowing system, wherein sound wave temperature measurement subassembly includes acoustic generator, sound wave receiver and analytic unit, and acoustic generator and sound wave receiver are installed respectively in boiler furnace, and acoustic generator and sound wave receiver are connected with the analytic unit electricity respectively, and analytic unit is connected with the control assembly electricity, and the control assembly with blow the ash assembly electricity and connect.
According to the utility model discloses a boiler furnace intelligence soot blowing system that above-mentioned an embodiment provided, wherein sound wave temperature measurement unit mount is in boiler furnace export folding flame angle department, boiler header interior high temperature over heater header exit and boiler economizer header entrance within a definite time.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blower system, wherein sound wave temperature measurement subassembly still includes the booster, outside air supply and booster intercommunication, booster and sound wave generator intercommunication, sound wave generator use the air after the booster pressure boost to send the pulse sound wave.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blowing system, wherein sound wave temperature measurement subassembly still includes the trigger, and the trigger is connected with acoustic generator and analytic unit electricity respectively, and the analytic unit passes through trigger control acoustic generator.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blowing system, wherein sound generator's quantity is one or more, and sound wave receiver's quantity is one or more, and sound generator and sound wave receiver's quantity detects the regional quantity decision of temperature as required.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blowing system, wherein the soot blowing subassembly includes a plurality of soot blowers, and a plurality of soot blowers are installed at boiler furnace export folding flame angle department, boiler header within a definite time high temperature over heater header exit and boiler economizer header entrance and aim at boiler furnace's the heating surface, and a plurality of soot blowers are connected with the control assembly electricity respectively.
The intelligent soot blowing system for the boiler furnace has the advantages that: and a sound wave gas temperature field measuring means is adopted to optimally guide the soot blower to blow soot as required. The temperature data measured by the system can be prevented from being wrong due to high environmental noise generated during soot blowing; intelligent control can be provided for all types of boiler blowing devices; the abrasion of the boiler tube wall and the steam consumption loss caused by unreasonable soot blowing are reduced.
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The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only intended to illustrate the technical solution of the present invention and are not intended to limit the scope of the present invention. In the figure:
FIG. 1 shows a block diagram of a boiler furnace intelligent soot blowing system according to an embodiment of the present invention;
fig. 2 shows a schematic view of the installation position of the intelligent soot blowing system of the boiler furnace according to an embodiment of the present invention as shown in fig. 1.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. For the purpose of teaching the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate that variations or substitutions from these embodiments will fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Accordingly, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Fig. 1 shows according to the utility model discloses an embodiment's boiler furnace intelligence soot blower system, boiler furnace intelligence soot blower system includes sound wave temperature measurement subassembly 1, control assembly 2 and soot blower assembly 3, sound wave temperature measurement subassembly 1 is installed in boiler furnace, and soot blower assembly 3 installs in boiler furnace, and sound wave temperature measurement subassembly 1 and soot blower assembly 3 are connected with the control assembly electricity respectively, and sound wave temperature measurement subassembly 1 detects and calculates the temperature value of each region of boiler furnace and transmits the temperature value for control assembly 2, and control assembly 2 blows the soot blower assembly 3 according to the temperature value control. The control assembly 2 is arranged in a boiler electronic room (not shown) outside the hearth, and the soot blowing assembly 3 and the control assembly 2 are connected through a heat-resisting cable. The acoustic thermometry assembly 1 may employ commercially available temperature monitoring systems, such as the pyrometrix (tm) system, that provide continuous, reliable and accurate temperature information within the combustion process.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blowing system, wherein sound wave temperature measurement subassembly 1 includes sound generator 11, sound wave receiver 12 and analytic unit 13, and sound generator 11 and sound wave receiver 12 are installed respectively in boiler furnace, and sound generator 11 and sound wave receiver 12 are connected with analytic unit 13 electricity respectively, and analytic unit 13 is connected with 2 electricity of control assembly, and control assembly 2 and 3 electricity of soot blowing subassembly are connected.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blower system, wherein sound wave temperature measurement subassembly 1 still includes booster 14, and outside air supply and booster 14 intercommunication, booster 14 and sound wave generator 11 intercommunication, sound wave generator 11 use the air after the 14 pressure boost of booster to send the pulse sound wave.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blowing system, wherein sound wave temperature measurement subassembly 1 still includes trigger 15, and trigger 15 is connected with sound generator 11 and analysis unit 13 electricity respectively, and analysis unit 13 passes through trigger 15 control sound generator 11.
According to the utility model discloses a boiler furnace intelligence soot blowing system that above-mentioned an embodiment provided, wherein the quantity of acoustic wave generator 11 is one or more, and the quantity of acoustic wave receiver 12 is one or more, and the quantity of acoustic wave generator 11 and acoustic wave receiver 12 is decided according to the regional quantity that needs detected the temperature (for example can support 4 acoustic wave generators and 12 acoustic wave receivers at most when using pyrometrix system as the acoustic wave temperature measurement subassembly).
Fig. 2 shows a schematic view of the installation position of the intelligent soot blowing system of the boiler furnace according to an embodiment of the present invention as shown in fig. 1. As shown in FIG. 2, the acoustic temperature measurement assembly 1 is installed at a folding flame angle 100 of an outlet of a boiler furnace, an outlet 200 of a high-temperature superheater header in a boiler header room and an inlet 300 of a boiler economizer header.
According to the utility model discloses an above-mentioned an embodiment provides boiler furnace intelligence soot blowing system, wherein soot blowing component 3 includes a plurality of soot blowers 31, and a plurality of soot blowers 31 are installed and are being aimed at boiler furnace's the heating surface at boiler furnace export inflection flame angle department 100, boiler header incasement high temperature over heater header exit 200 and boiler economizer header entrance 300, and a plurality of soot blowers 31 are connected with control assembly 2 electricity respectively.
According to the utility model discloses a boiler furnace intelligence soot blowing system that above-mentioned an embodiment provided, wherein boiler furnace intelligence soot blowing system's theory of operation does: the trigger 15 of the acoustic temperature measurement component 1 sends out a trigger signal, the supercharger 14 pressurizes the pressure from an external air source to a preset pressure (such as 2.76Mpa or 400psi), the acoustic generator 11 emits a pulse acoustic signal into the furnace, the acoustic signal is propagated in the furnace and received by the acoustic receivers 12 installed at different angles, the acoustic receivers 12 convert the received acoustic signal into an electric signal and send the electric signal into the analysis unit 13 after preprocessing, the analysis unit 13 calculates the temperature value of each region (for example, processing by TempView software or other similar software) according to the time difference between the acoustic emission and the signal received at different receiving positions, the analysis unit 13 sends the temperature value of each region into the control component 2, the control component 2 compares and calculates the temperature of each region according to the temperature of each region and the design temperature, calculates the ash contamination degree of the water cooling wall and the superheater of the boiler, when the ash contamination degree of the region exceeds the set, the control assembly 2 sends a soot blower control command signal to the soot blowing assembly 3 and starts the soot blower 31 of the corresponding area for soot blowing.
According to the utility model discloses an above-mentioned boiler furnace intelligence soot blowing system that embodiment provided, wherein utilize the principle of sound wave gas temperature field measurement technique that the sound velocity in the gas depends on gaseous temperature. By accurately measuring the time required for the acoustic signal to travel a known distance through the air in the furnace, the average gas temperature on the straight path from the acoustic generator to the receiver can be determined.
According to the utility model discloses a boiler furnace intelligence soot blowing system that above-mentioned an embodiment provided, wherein the unable direct measurement of parameter of the dirty degree of ash needs to be deducted by other physical quantity that can direct measurement indirectly. When the working condition is fixed, the inlet and outlet enthalpy difference of the heating surface is smaller, and the ash dirt degree is larger. The enthalpy difference between the inlet and the outlet of the heating surface reflects the degree of ash pollution to a certain extent.
The intelligent soot blowing system for the boiler furnace has the advantages that: and a sound wave gas temperature field measuring means is adopted to optimally guide the soot blower to blow soot as required. The temperature data measured by the system can be prevented from being wrong due to high environmental noise generated during soot blowing; intelligent control can be provided for all types of boiler blowing devices; the abrasion of the boiler tube wall and the steam consumption loss caused by unreasonable soot blowing are reduced.
It will of course be appreciated that whilst the foregoing has been given by way of example of the present invention, such and other modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope of the invention as herein set forth. Therefore, while the invention has been described with reference to a preferred embodiment, it is not intended that the novel apparatus be limited thereby, but on the contrary, it is intended to cover various modifications and equivalent arrangements included within the broad scope of the above disclosure and the appended claims.
Claims (8)
1. The utility model provides a boiler furnace intelligence soot blowing system which characterized in that, boiler furnace intelligence soot blowing system includes sound wave temperature measurement subassembly, control module and soot blowing subassembly, sound wave temperature measurement subassembly is installed in boiler furnace, and soot blowing subassembly installs in boiler furnace, and sound wave temperature measurement subassembly and soot blowing subassembly are connected with the control module electricity respectively, and sound wave temperature measurement subassembly detects and calculates the temperature value of each region of boiler furnace and transmits the temperature value for control module, and control module controls soot blowing subassembly according to the temperature value and blows the soot.
2. The intelligent soot blowing system of a boiler furnace according to claim 1, wherein the acoustic temperature measurement assembly comprises an acoustic generator, an acoustic receiver and an analysis unit, the acoustic generator and the acoustic receiver are respectively installed in the boiler furnace, the acoustic generator and the acoustic receiver are respectively electrically connected with the analysis unit, the analysis unit is electrically connected with the control assembly, and the control assembly is electrically connected with the soot blowing assembly.
3. The intelligent soot blowing system for a boiler furnace as claimed in claim 2, wherein the acoustic temperature measurement component is installed at a flame folding angle of an outlet of the boiler furnace, an outlet of a header of a high temperature superheater in a boiler header room and an inlet of a header of a boiler economizer.
4. The intelligent soot blowing system for a boiler furnace according to claim 2, wherein the sound wave temperature measuring assembly further comprises a booster, an external air source is communicated with the booster, the booster is communicated with the sound wave generator, and the sound wave generator uses air boosted by the booster to emit pulsed sound waves.
5. The intelligent soot blowing system for a boiler furnace according to claim 2, wherein the acoustic temperature measurement assembly further comprises a trigger, the trigger is electrically connected with the acoustic generator and the analysis unit respectively, and the analysis unit controls the acoustic generator through the trigger.
6. The intelligent soot blowing system for the boiler furnace according to claim 2, wherein the number of the sound wave generators is one or more, the number of the sound wave receivers is one or more, and the number of the sound wave generators and the number of the sound wave receivers are determined according to the number of the areas needing to detect the temperature.
7. The intelligent soot blowing system for the boiler furnace as claimed in claim 3, wherein the soot blowing assembly comprises a plurality of soot blowers, the plurality of soot blowers are arranged at the folding flame angle of the outlet of the boiler furnace, the outlet of the high temperature superheater header in the boiler header chamber and the inlet of the boiler economizer header and are aligned with the heating surface of the boiler furnace, and the plurality of soot blowers are respectively electrically connected with the control assembly.
8. The intelligent soot blowing system for a boiler furnace as claimed in claim 7, wherein the soot blower is a gas soot blower, a shock wave soot blower, a sound wave soot blower or a boiler surface self-cleaning device.
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| CN201920718360.3U CN210197322U (en) | 2019-05-20 | 2019-05-20 | Intelligent soot blowing system for boiler furnace |
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| CN201920718360.3U CN210197322U (en) | 2019-05-20 | 2019-05-20 | Intelligent soot blowing system for boiler furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081448A (en) * | 2019-05-20 | 2019-08-02 | 天津国电津能滨海热电有限公司 | Boiler furnace intelligent sootblowing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081448A (en) * | 2019-05-20 | 2019-08-02 | 天津国电津能滨海热电有限公司 | Boiler furnace intelligent sootblowing |
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