CN211202073U - Coal-fired boiler optimized combustion device of coal-electric unit - Google Patents
Coal-fired boiler optimized combustion device of coal-electric unit Download PDFInfo
- Publication number
- CN211202073U CN211202073U CN201922395179.6U CN201922395179U CN211202073U CN 211202073 U CN211202073 U CN 211202073U CN 201922395179 U CN201922395179 U CN 201922395179U CN 211202073 U CN211202073 U CN 211202073U
- Authority
- CN
- China
- Prior art keywords
- coal
- fired boiler
- pressure heater
- pressure
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a coal-fired boiler optimized combustion device of a coal-fired electric unit, which comprises a coal-fired boiler power generation system and a diagnosis device, wherein the coal-fired boiler power generation system is electrically connected with the diagnosis device, and the diagnosis device diagnoses the coal-fired boiler power generation system and eliminates faults; the diagnosis device can accurately and rapidly diagnose the faults of the power plant units in the coal-fired boiler power generation system, and provides powerful guarantee for production, maintenance and decision.
Description
Technical Field
The utility model relates to a coal-fired power generation technical field specifically is a coal-fired boiler of coal-electric machine group optimizes burner.
Background
At present, the annual coal-fired power generation capacity of China accounts for more than 80% of the total power generation capacity, and power utilization of the whole society is mainly provided by thermal power enterprises. Power generation enterprises face the reform of establishing a modern power market, separating a plant network and bidding on the internet, and the improvement of the operation efficiency of a generator set and the competitiveness of the enterprise are urgently needed.
The equipment fault diagnosis and forecast system of the current power plant generally has the following problems: the alarm can only realize out-of-limit alarm, and can not comprehensively utilize test data and characteristic parameters to deeply analyze equipment operation trend, equipment fault positions, reasons, degree and expert suggestions; the knowledge and experience of domain experts can not be fully utilized, and the problems of bottleneck and poor flexibility of knowledge expression and utilization exist; the expert knowledge base cannot be effectively evaluated, perfected and expanded; the reasoning function is not strong, and the problem of false report or missing report often occurs to a complex multivariable nonlinear system; lack of interpretation of test results; the characteristic parameters obtained by data acquisition and signal analysis processing cannot automatically complete the analysis and interpretation of the test results by using a computer.
In addition, a large amount of coal is consumed in the power generation process of the thermal power plant, and a large amount of nitrogen oxides are generated after the coal is combusted. The nitrogen oxides are the main cause of forming the nitric acid rain, and the corrosion strength of the nitric acid rain is one time of that of the sulfuric acid rain under the same concentration, so that the reduction of the emission of the nitrogen oxides in the coal-fired power plant has great significance for environmental protection.
The requirement of our country on environmental policy is increased year by year, and the coal-fired power plant needs to be provided with a flue gas denitration device to reduce the emission of nitrogen oxides, and at present, the SCR selective catalytic reduction device is commonly adopted at home and abroad in the tail flue of the boiler. SCR (selective catalytic reduction) denitration technology means that a reducing agent (anhydrous ammonia, ammonia water or urea) is selectively mixed with NO in flue gas in the presence of a catalyst and oxygen at the temperature of 320-427 DEG CxReact to generate harmless nitrogen and water, thereby removing NO in the flue gasxSelectivity means the reducing agent NH3And NO in flue gasxThe reduction reaction occurs without reacting with the oxygen in the flue gas.
Because of the domestic coal quality condition is complicated, SCR entry nitrogen oxide content often is higher, and selective catalytic reduction device's ammonia injection mode is more extensive, the inside reduction pipeline of selective catalytic reduction device is thicker, the pipeline is arranged simply, there is the difference of flow, velocity of flow in each region of flow field in the flue, the ammonia injection is inhomogeneous, a large amount of ammonia escape scheduling problem just appears easily, in actual denitration process, just need use excessive ammonia injection to compensate, in order to guarantee flue gas denitration requirement, excessive ammonia injection will make the ammonia injection cost increase of power plant, and excessive ammonia injection still can cause new pollution.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coal-fired boiler of coal-electric machine group optimizes burner to solve the problem that equipment failure diagnosis forecast system exists among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a coal fired boiler of coal-fired electric unit optimizes burner, including coal fired boiler power generation system and diagnostic device, coal fired boiler power generation system is connected with the diagnostic device electricity, and diagnostic device diagnoses coal fired boiler power generation system, eliminates the trouble side by side.
Further, the coal fired boiler power generation system includes the generator and the coal fired boiler who establishes ties in proper order, the steam turbine, the condenser, condensate pump, multistage low pressure heater, the oxygen-eliminating device, feed pump and multistage high pressure feed water heater, the steam inlet of condenser is connected with the steam exhaust mouth of steam turbine, multistage low pressure heater, oxygen-eliminating device and multistage high pressure feed water heater are connected with the steam turbine respectively, the steam turbine is taken out steam to multistage low pressure heater, oxygen-eliminating device and multistage high pressure feed water heater respectively, the generator is connected with the steam turbine, steam turbine drive generator generates electricity.
Further, the steam turbine comprises a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder which are sequentially connected in series, the high-pressure cylinder is connected with the coal-fired boiler in series, and the low-pressure cylinder is respectively connected with the condenser and the generator in series; the multistage high-pressure heater comprises a first-stage high-pressure heater, a second-stage high-pressure heater and a third-stage high-pressure heater which are sequentially connected in series, the first-stage high-pressure heater is respectively connected with the deaerator and the water feeding pump in series, the third-stage high-pressure heater is connected with the coal-fired boiler in series, the high-pressure cylinder respectively performs steam extraction on the second-stage high-pressure heater and the third-stage high-pressure heater, and the intermediate pressure cylinder respectively performs steam extraction on the deaerator and the first-; the multistage low-pressure heater comprises a first-stage low-pressure heater, a second-stage low-pressure heater, a third-stage low-pressure heater and a fourth-stage low-pressure heater which are sequentially connected in series, the fourth-stage low-pressure heater is connected with the deaerator in series, the first-stage low-pressure heater is connected with the condensate pump in series, and the low-pressure cylinder is used for extracting steam from the first-stage low-pressure heater, the second-stage low-pressure heater, the third-stage low-pressure heater and the fourth.
Furthermore, drain pipelines are arranged between the third-stage high-pressure heater and the second-stage high-pressure heater, between the second-stage high-pressure heater and the first-stage high-pressure heater, and between the first-stage high-pressure heater and the deaerator; a drain pipeline is arranged between the fourth-stage low-pressure heater and the third-stage low-pressure heater and between the third-stage low-pressure heater and the second-stage low-pressure heater; a drain pipeline is arranged between the first-stage low-pressure heater and the condenser; a drain pump is arranged between the third-stage low-pressure heater and the second-stage low-pressure heater.
Furthermore, a boiler tail flue is arranged on the coal-fired boiler and comprises an advection section and an ascending section, one end of the advection section is connected with a steam outlet of the coal-fired boiler, the other end of the advection section is connected with one end of the ascending section through a turning chamber, the other end of the ascending section is connected with a steam turbine, and flue gas exhausted from the steam outlet of the coal-fired boiler sequentially passes through the advection section, the turning chamber and the ascending section and then enters the steam turbine.
Furthermore, a plurality of flue turning guide plates are arranged in the turning chamber and are arranged along the turning chamber at equal intervals in the transverse direction; the flue turning guide plate comprises a first flue turning guide plate and a second flue turning guide plate, and the first flue turning guide plate and the second flue turning guide plate are mutually crossed to be integrally formed; the flue turning guide plate is an arc-shaped plate matched with the turning chamber in shape.
Furthermore, a plurality of flue guide plates are arranged in the advection section and are arranged along the advection section at equal intervals in the transverse direction; the flue guide plates correspond to the first flue turning guide plates one by one; be equipped with ammonia injection grid, spoiler and deflector in the ascending section in proper order, ammonia injection grid, spoiler and deflector all are equipped with a plurality ofly to one-to-one each other, ammonia injection grid, spoiler and deflector all set up along the vertical equidistant range of ascending section, ammonia injection grid and second flue turn guide plate one-to-one.
Further, the diagnostic device includes:
a receiving module: the system is used for receiving power plant unit data and expert experience model data in a coal-fired boiler power generation system;
an inference module: the method is used for judging according to the power plant unit data and the expert experience model data in the coal-fired boiler power generation system to obtain a diagnosis result, and providing a fault removing measure according to the diagnosis result.
Further, the reasoning module comprises:
an expert system module: the method is used for judging the reliability of the fault represented by the power plant unit data in the coal-fired boiler power generation system by combining the expert experience model data to obtain a first diagnosis result;
a neural network module: the system comprises a neural network mathematical model, a first diagnosis result and a second diagnosis result, wherein the neural network mathematical model is used for processing power plant unit data and expert experience model data in a coal-fired boiler power generation system, judging the reliability of faults represented by the power plant unit data in the coal-fired boiler power generation system and obtaining the second diagnosis result;
a fuzzy logic module: the method is used for processing the power plant unit data and the expert experience model data in the coal-fired boiler power generation system by using the fuzzy logic, judging the reliability of the fault represented by the power plant unit data in the coal-fired boiler power generation system and obtaining a third diagnosis result.
Further, the diagnostic apparatus further comprises:
a synthesis module: and the diagnostic module is used for judging the diagnostic result with the highest reliability according to the first diagnostic result, the second diagnostic result and the third diagnostic result to obtain the optimal diagnostic result and provide a fault removing measure.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a coal-fired boiler optimized combustion device of a coal-fired electric unit, which comprises a coal-fired boiler power generation system and a diagnosis device, wherein the coal-fired boiler power generation system is electrically connected with the diagnosis device, and the diagnosis device diagnoses the coal-fired boiler power generation system and eliminates faults; the diagnosis device can accurately and rapidly diagnose the faults of the power plant units in the coal-fired boiler power generation system, and provides powerful guarantee for production, maintenance and decision.
Drawings
Fig. 1 is a system connection diagram of an optimized combustion device of a coal-fired boiler of a coal-electric machine set provided by an embodiment of the invention;
fig. 2 is a schematic structural view of a boiler tail flue in a coal-fired boiler optimized combustion device of a coal-electric machine set provided by the embodiment of the utility model;
fig. 3 is a system connection diagram of a diagnosis device in a coal-fired boiler optimized combustion device of a coal-electric unit according to an embodiment of the present invention.
In the figure: 1-coal-fired boiler, 2-high pressure cylinder, 3-intermediate pressure cylinder, 4-low pressure cylinder, 5-generator, 6-condenser, 7-condensate pump, 8-first stage low pressure heater, 9-second stage low pressure heater, 10-third stage low pressure heater, 11-fourth stage low pressure heater, 12-deaerator, 13-feed water pump, 14-first stage high pressure heater, 15-second-stage high-pressure heater, 16-third-stage high-pressure heater, 17-drainage pump, 18-diagnosis device, 19-advection section, 20-turning chamber, 21-ascending section, 22-flue turning guide plate, 23-flue guide plate, 24-ammonia spray grid, 25-spoiler, 26-deflector and 27-drainage pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the coal-fired boiler optimized combustion device provided by the embodiment of the present invention comprises a coal-fired boiler power generation system and a diagnosis device 18, wherein the coal-fired boiler power generation system is electrically connected to the diagnosis device 18, and the diagnosis device 18 diagnoses the coal-fired boiler power generation system and removes faults; the diagnostic device 18 can accurately and rapidly diagnose the faults of the power plant units in the coal-fired boiler power generation system, and provides powerful guarantee for production, maintenance and decision making.
The coal-fired boiler power generation system includes generator 5 and the coal-fired boiler 1 who establishes ties in proper order, the steam turbine, condenser 6, condensate pump 7, multistage low pressure feed water heater, deaerator 12, feed pump 13 and multistage high pressure feed water heater, the steam inlet of condenser 6 is connected with the steam exhaust mouth of steam turbine, multistage low pressure feed water heater, deaerator 12 and multistage high pressure feed water heater are connected with the steam turbine respectively, the steam turbine is to multistage low pressure feed water heater, deaerator 12 and multistage high pressure feed water heater take out the vapour respectively, generator 5 is connected with the steam turbine, steam turbine drive generator 5 generates electricity.
The steam turbine comprises a high-pressure cylinder 2, an intermediate-pressure cylinder 3 and a low-pressure cylinder 4 which are sequentially connected in series, wherein the high-pressure cylinder 2 is connected with the coal-fired boiler 1 in series, and the low-pressure cylinder 4 is respectively connected with a condenser 6 and a generator 5 in series; the multistage high-pressure heater comprises a first-stage high-pressure heater 14, a second-stage high-pressure heater 15 and a third-stage high-pressure heater 16 which are sequentially connected in series, the first-stage high-pressure heater 14 is respectively connected with a deaerator 12 and a water feed pump 13 in series, the third-stage high-pressure heater 16 is connected with the coal-fired boiler 1 in series, the high-pressure cylinder 2 respectively performs steam extraction on the second-stage high-pressure heater 15 and the third-stage high-pressure heater 16, and the intermediate pressure cylinder 3 respectively performs steam extraction on the deaerator 12 and the first-stage; the multistage low-pressure heater comprises a first-stage low-pressure heater 8, a second-stage low-pressure heater 9, a third-stage low-pressure heater 10 and a fourth-stage low-pressure heater 11 which are sequentially connected in series, the fourth-stage low-pressure heater 11 is connected with a deaerator 12 in series, the first-stage low-pressure heater 8 is connected with a condensate pump 7 in series, and a low-pressure cylinder 4 is used for extracting steam from the first-stage low-pressure heater 8, the second-stage low-pressure heater 9, the third-stage low-pressure heater 10 and the fourth-stage.
A drain pipeline 27 is arranged between the third-stage high-pressure heater 16 and the second-stage high-pressure heater 15, between the second-stage high-pressure heater 15 and the first-stage high-pressure heater 14, and between the first-stage high-pressure heater 14 and the deaerator 12; a drain pipeline 27 is arranged between the fourth-stage low-pressure heater 11 and the third-stage low-pressure heater 10, and between the third-stage low-pressure heater 10 and the second-stage low-pressure heater 9; a drain pipeline 27 is arranged between the first-stage low-pressure heater 8 and the condenser 6; a drain pump 17 is arranged between the third-stage low-pressure heater 10 and the second-stage low-pressure heater 9.
As shown in fig. 2, a boiler tail flue is arranged on the coal-fired boiler 1, the boiler tail flue comprises an advection section 19 and an ascending section 21, one end of the advection section 19 is connected with a steam outlet of the coal-fired boiler 1, the other end of the advection section is connected with one end of the ascending section 21 through a turning chamber 20, the other end of the ascending section 21 is connected with a steam turbine, and flue gas exhausted from the steam outlet of the coal-fired boiler 1 sequentially passes through the advection section 19, the turning chamber 20 and the ascending section 21 and then enters the steam turbine.
A plurality of flue turning guide plates 22 are arranged in the turning chamber 20, and are arranged at equal intervals along the transverse direction of the turning chamber 20; the flue turning guide plate 22 comprises a first flue turning guide plate and a second flue turning guide plate which are mutually crossed to form a whole; the flue turning guide plate 22 is an arc-shaped plate matched with the shape of the turning chamber 20; when the flue gas passes through the flue turning guide plate 22, stable turning can be realized.
A plurality of flue guide plates 23 are arranged in the advection section 19, and are arranged along the advection section 19 at equal intervals in the transverse direction; the flue guide plates 23 correspond to the first flue turning guide plates one by one; the ammonia injection grating 24, the spoilers 25 and the guide plates 26 are sequentially arranged in the ascending section 21, the ammonia injection grating 24, the spoilers 25 and the guide plates 26 are all arranged in a plurality and are in one-to-one correspondence with each other, and the ammonia injection grating 24, the spoilers 25 and the guide plates 26 are all vertically arranged at equal intervals along the ascending section 21The ammonia injection grids 24 correspond to the second flue turning guide plates one by one; the ammonia injection grid 24 injects ammonia gas into the rising section 21, and the distribution of the injected ammonia is matched with the distribution of NOx in the flue gas as much as possible through the action of the spoiler 25, so that NH is generated3/NOxThe distribution of the molar ratio is as uniform as possible, and the ammonia spraying precision is improved, so that the problem of reducing agent waste in the traditional technology can be solved, and the problem of ammonia pollution is also avoided; when the flue gas passes through the flue guide plate 23 and the guide plate 26, the flue gas flow equalization is performed once, so that the optimization of the flue gas flow field in the tail flue of the boiler is realized.
As shown in fig. 3, the diagnostic device 18 includes:
a receiving module: the system is used for receiving power plant unit data and expert experience model data in a coal-fired boiler power generation system; expert empirical model data can be understood as empirical inferences that have been accumulated over a long period of time, such as: the problem of water fullness of a boiler steam drum is reflected in the temperature of main steam, the temperature of a thrust pad and axial displacement; the problem of water break of the cooling water of the oil cooler is reflected in the temperature of the thrust pad and the temperature of the lubricating oil; the problem carrier of the thrust pad passing of the severe load fluctuation is that the thrust pad temperature, the shaft displacement and the active load of the generator are fluctuated or not;
an inference module: the method is used for judging according to the power plant unit data and the expert experience model data in the coal-fired boiler power generation system to obtain a diagnosis result, and providing a fault removing measure according to the diagnosis result.
The reasoning module comprises:
an expert system module: the method is used for judging the reliability of the fault represented by the power plant unit data in the coal-fired boiler power generation system by combining the expert experience model data to obtain a first diagnosis result;
a neural network module: the system comprises a neural network mathematical model, a first diagnosis result and a second diagnosis result, wherein the neural network mathematical model is used for processing power plant unit data and expert experience model data in a coal-fired boiler power generation system, judging the reliability of faults represented by the power plant unit data in the coal-fired boiler power generation system and obtaining the second diagnosis result;
a fuzzy logic module: the system comprises a fuzzy logic unit, a first diagnostic result and a second diagnostic result, wherein the fuzzy logic unit is used for processing power plant unit data and expert experience model data in a coal-fired boiler power generation system, judging the reliability of faults represented by the power plant unit data in the coal-fired boiler power generation system and obtaining a third diagnostic result; the expert system, neural network and fuzzy logic each dominate in information analysis applications, but also each have insufficient aspects, the present invention has the ability to overcome their weaknesses, which can be understood from the ability to analyze fuzzy logic and neural networks: because of the difference between the two methods, they have advantages and disadvantages, and in particular, fuzzy systems attempt to describe and process the fuzzy concepts existing in human language and thinking, thereby simulating human intelligence, and neural networks are created based on the physiological structure of human brain and information processing process, and the purpose of which is to simulate human intelligence.
The diagnostic device 18 further comprises:
a synthesis module: the diagnostic device is used for judging the diagnostic result with the highest reliability according to the first diagnostic result, the second diagnostic result and the third diagnostic result to obtain the optimal diagnostic result and provide a fault removing measure; if one of the last three diagnostic results is too far from the other two diagnostic results, the diagnostic result is disregarded.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a coal-fired boiler of coal-electric machine group optimizes burner which characterized in that: the system comprises a coal-fired boiler power generation system and a diagnosis device (18), wherein the coal-fired boiler power generation system is electrically connected with the diagnosis device (18), and the diagnosis device (18) diagnoses the coal-fired boiler power generation system and eliminates faults.
2. The optimized combustion device of the coal-fired boiler of the coal-electric unit according to claim 1, characterized in that: coal fired boiler power generation system includes generator (5) and coal fired boiler (1), steam turbine, condenser (6), condensate pump (7), multistage low pressure feed water heater, oxygen-eliminating device (12), feed pump (13) and multistage high pressure feed water heater who establishes ties in proper order, the steam inlet of condenser (6) is connected with the steam extraction mouth of steam turbine, multistage low pressure feed water heater, oxygen-eliminating device (12) and multistage high pressure feed water heater are connected with the steam turbine respectively, the steam turbine is taken out vapour to multistage low pressure feed water heater, oxygen-eliminating device (12) and multistage high pressure feed water heater respectively, generator (5) are connected with the steam turbine, steam turbine drive generator (5) generate electricity.
3. The optimized combustion device of the coal-fired boiler of the coal-electric unit as claimed in claim 2, characterized in that: the steam turbine comprises a high-pressure cylinder (2), an intermediate-pressure cylinder (3) and a low-pressure cylinder (4) which are sequentially connected in series, the high-pressure cylinder (2) is connected with the coal-fired boiler (1) in series, and the low-pressure cylinder (4) is respectively connected with a condenser (6) and a generator (5) in series; the multistage high-pressure heater comprises a first-stage high-pressure heater (14), a second-stage high-pressure heater (15) and a third-stage high-pressure heater (16) which are sequentially connected in series, the first-stage high-pressure heater (14) is respectively connected with a deaerator (12) and a water feeding pump (13) in series, the third-stage high-pressure heater (16) is connected with the coal-fired boiler (1) in series, the high-pressure cylinders (2) respectively pump steam to the second-stage high-pressure heater (15) and the third-stage high-pressure heater (16), and the intermediate-pressure cylinders (3) respectively pump steam to the deaerator (12) and the first-stage high-pressure heater (14); the multistage low-pressure heater comprises a first-stage low-pressure heater (8), a second-stage low-pressure heater (9), a third-stage low-pressure heater (10) and a fourth-stage low-pressure heater (11) which are sequentially connected in series, the fourth-stage low-pressure heater (11) is connected with a deaerator (12) in series, the first-stage low-pressure heater (8) is connected with a condensate pump (7) in series, and a low-pressure cylinder (4) is used for extracting steam from the first-stage low-pressure heater (8), the second-stage low-pressure heater (9), the third-stage low-pressure heater (10) and the fourth-stage low-pressure.
4. The optimized combustion device of the coal-fired boiler of the coal-electric unit according to claim 3, characterized in that: a drain pipeline (27) is arranged between the third-stage high-pressure heater (16) and the second-stage high-pressure heater (15), between the second-stage high-pressure heater (15) and the first-stage high-pressure heater (14), and between the first-stage high-pressure heater (14) and the deaerator (12); a drain pipeline (27) is arranged between the fourth-stage low-pressure heater (11) and the third-stage low-pressure heater (10) and between the third-stage low-pressure heater (10) and the second-stage low-pressure heater (9); a drain pipeline (27) is arranged between the first-stage low-pressure heater (8) and the condenser (6); a drain pump (17) is arranged between the third-stage low-pressure heater (10) and the second-stage low-pressure heater (9).
5. The optimized combustion device of the coal-fired boiler of the coal-electric unit as claimed in claim 2, characterized in that: be equipped with boiler afterbody flue on coal fired boiler (1), boiler afterbody flue includes advection section (19) and kickup section (21), the one end of advection section (19) is connected with the play steam ports of coal fired boiler (1), and the other end passes through turning room (20) and is connected with a port of kickup section (21), another port of kickup section (21) is connected with the steam turbine, and the flue gas of following the play steam ports exhaust of coal fired boiler (1) enters into the steam turbine behind advection section (19), turning room (20) and kickup section (21) in proper order.
6. The optimized combustion device of the coal-fired boiler of the coal-electric unit according to claim 5, characterized in that: a plurality of flue turning guide plates (22) are arranged in the turning chamber (20), and are arranged at equal intervals along the transverse direction of the turning chamber (20); the flue turning guide plate (22) comprises a first flue turning guide plate and a second flue turning guide plate, and the first flue turning guide plate and the second flue turning guide plate are mutually crossed to form an integral body; the flue turning guide plate (22) is an arc-shaped plate matched with the turning chamber (20) in shape.
7. The optimized combustion device of the coal-fired boiler of the coal-electric unit as set forth in claim 6, characterized in that: a plurality of flue guide plates (23) are arranged in the advection section (19), and are arranged at equal intervals along the transverse direction of the advection section (19); the flue guide plates (23) correspond to the first flue turning guide plates one by one; be equipped with in proper order in the kickup section (21) and spout ammonia grid (24), spoiler (25) and deflector (26), spout ammonia grid (24), spoiler (25) and deflector (26) all are equipped with a plurality ofly to one-to-one each other, spout ammonia grid (24), spoiler (25) and deflector (26) and all follow the vertical equidistant arrangement setting of kickup section (21), spout ammonia grid (24) and second flue turn guide plate one-to-one.
8. The optimized combustion device for coal-fired boiler of coal-electric machine set as claimed in claim 1, characterized in that said diagnosis device (18) comprises:
a receiving module: the system is used for receiving power plant unit data and expert experience model data in a coal-fired boiler power generation system;
an inference module: and the system is used for judging according to the power plant unit data and the expert experience model data in the coal-fired boiler power generation system to obtain a diagnosis result and providing a fault removal measure according to the diagnosis result.
9. The optimized combustion device for coal-fired boiler of coal-electric unit according to claim 8, characterized in that the reasoning module comprises:
an expert system module: the reliability judging unit is used for judging the reliability of the fault represented by the power plant unit data in the coal-fired boiler power generation system by combining the expert experience model data to obtain a first diagnosis result;
a neural network module: the system comprises a neural network mathematical model, a first diagnosis result and a second diagnosis result, wherein the neural network mathematical model is used for processing power plant unit data and expert experience model data in the coal-fired boiler power generation system, judging the reliability of faults represented by the power plant unit data in the coal-fired boiler power generation system and obtaining the second diagnosis result;
a fuzzy logic module: and the system is used for processing the power plant unit data and the expert experience model data in the coal-fired boiler power generation system by using fuzzy logic, judging the reliability of the fault represented by the power plant unit data in the coal-fired boiler power generation system and obtaining a third diagnosis result.
10. The optimized combustion device for coal-fired boiler of coal-fired electric unit as set forth in claim 9, wherein said diagnosis device (18) further comprises:
a synthesis module: and the diagnostic module is used for judging the diagnostic result with the highest reliability according to the first diagnostic result, the second diagnostic result and the third diagnostic result to obtain the optimal diagnostic result and provide a fault removing measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922395179.6U CN211202073U (en) | 2019-12-27 | 2019-12-27 | Coal-fired boiler optimized combustion device of coal-electric unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922395179.6U CN211202073U (en) | 2019-12-27 | 2019-12-27 | Coal-fired boiler optimized combustion device of coal-electric unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202073U true CN211202073U (en) | 2020-08-07 |
Family
ID=71880538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922395179.6U Active CN211202073U (en) | 2019-12-27 | 2019-12-27 | Coal-fired boiler optimized combustion device of coal-electric unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202073U (en) |
-
2019
- 2019-12-27 CN CN201922395179.6U patent/CN211202073U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103268066A (en) | Optimization method and device of operation of power station boiler | |
| CN108854530B (en) | Medium-low temperature wide-load SCR denitration device and denitration method | |
| CN110180386B (en) | Flue gas spiral diffusion denitration device and denitration method | |
| CN103034208B (en) | Thermal generation unit denitration electricity price method for supervising | |
| CN104504498A (en) | Coal-fired power generating set ultralow emission environmental protection electricity price monitoring method | |
| CN108479292A (en) | A kind of coking VOCs exhaust treatment systems and method | |
| Wu et al. | Prediction of NOx emission concentration from coal-fired power plant based on joint knowledge and data driven | |
| CN113550817B (en) | Central temperature correction method and system of tail gas treatment device and readable storage medium | |
| CN211202073U (en) | Coal-fired boiler optimized combustion device of coal-electric unit | |
| CN104548933A (en) | Ammonia water ammonia production reducing agent supply device and method for SCR denitration | |
| CN113669748A (en) | Full-load denitration system and method adopting dividing wall type heat exchange coupling coal-fired boiler | |
| CN112717690A (en) | SCR denitration commissioning method under deep peak regulation working condition of coal-fired unit | |
| CN210303176U (en) | Gas power generation non-combined cycle generating set flue gas denitration system | |
| CN111582639A (en) | Denitration system running state evaluation system | |
| CN109847583A (en) | A kind of catalyst situ regeneration device and its application method | |
| CN110132342A (en) | Power station air preheater dust stratification monitoring method based on Clustering | |
| CN212039866U (en) | Ship tail gas denitration system | |
| CN115640951A (en) | Power carbon emission monitoring method and system based on power industry chain | |
| CN210448686U (en) | Wide-load denitration device | |
| CN203829902U (en) | Pyrolysis denitration system device capable of achieving white smoke concentration less than 50 milligrams | |
| Xu et al. | Data-based system monitoring and equipment diagnosis system for methanol water to hydrogen plant | |
| CN112749205A (en) | System and method for acquiring relation curve between power of coal-fired generator set and power supply coal consumption | |
| CN107486016B (en) | Low-temperature desulfurization and denitrification technology applicable to high-sulfur fuel oil for marine low-speed diesel engine | |
| CN219922596U (en) | Exhaust-heat boiler denitration dilution air supply device | |
| CN212273965U (en) | Multi-steam-source water supply temperature control system for low-load operation of unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |