CN111947181B - Method for monitoring central position of flame of power station boiler - Google Patents
Method for monitoring central position of flame of power station boiler Download PDFInfo
- Publication number
- CN111947181B CN111947181B CN202010789327.7A CN202010789327A CN111947181B CN 111947181 B CN111947181 B CN 111947181B CN 202010789327 A CN202010789327 A CN 202010789327A CN 111947181 B CN111947181 B CN 111947181B
- Authority
- CN
- China
- Prior art keywords
- temperature
- temperature measuring
- layer
- measuring elements
- boiler
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M11/00—Safety arrangements
- F23M11/04—Means for supervising combustion, e.g. windows
- F23M11/045—Means for supervising combustion, e.g. windows by observing the flame
Abstract
The invention relates to the field of power station boiler monitoring, in particular to a method for monitoring the central position of flame of a power station boiler, which comprises the following steps: arranging temperature measuring elements, calculating the average temperature of each layer of temperature measuring elements, calculating the difference between the temperature of the temperature measuring elements and the average temperature, calculating the average value of the average temperature of the adjacent three layers of temperature measuring elements, and taking a group with the highest average temperature of the adjacent three layers of temperature measuring elements, wherein the position of the layer with the highest average temperature in the group is the central position of the flame of the boiler. The invention has the advantages that: according to the method for monitoring the central position of the flame of the power station boiler, disclosed by the invention, the central position of the flame is calculated according to the detected temperature by measuring the temperature of the flame in the burner area of the boiler hearth, so that the central position of the flame of the boiler is monitored more accurately, the air distribution and the operation of a burner can be guided, the unreasonable combustion is avoided, the combustion economy of the boiler is optimized, and the temperature of reheated steam can be adjusted by changing the central position of the flame.
Description
Technical Field
The invention relates to the field of power station boiler monitoring, in particular to a method for monitoring the central position of flame of a power station boiler.
Background
The boiler is the main production equipment of thermal power generation enterprise, and the economic nature and the stability of boiler operation are concerned with power generation enterprise's competitiveness and security. How to improve the efficiency of thermal power generating sets and reduce energy consumption has become an urgent need for technical improvement of thermal power plants. The boiler system is a complex control system, wherein the combustion system is a control object with multiple inputs, multiple outputs, strong coupling, multiple interferences, large hysteresis and difficulty in establishing an accurate mathematical model, and is also a key factor for the safe and economic operation of the thermal power plant. Therefore, determining the flame center position is important for determining the combustion condition in the furnace and guiding the combustion adjustment.
The existing power station boiler operates, a measuring device of the flame center position of a hearth cannot know the actual combustion condition in the hearth, the relative position of the flame center can be indirectly judged only through the temperature of a water-cooled wall and a tail heating surface metal wall and the temperature of over-heated steam and the temperature of re-heated steam, not only is not intuitive, and the change of wall temperature and steam temperature is seriously lagged behind the change of flame (flue gas) temperature, which is not favorable for combustion adjustment and influences the economy and safety of the boiler, for example, the chinese patent with application number CN201710151752.1 discloses a method for monitoring the central position of flame in a boiler furnace, a prediction model of the hearth heat load and the hearth flame center position is established, and according to the heat transfer characteristics in the hearth, the relationship between the hearth heat load and the wall temperature of the water wall and the corresponding relationship between the hearth heat load distribution and the wall temperature distribution of the water wall are established, and the flame center position is predicted by using the wall temperature of the hearth water wall. On the one hand, a place with a high wall temperature does not necessarily represent a high heat load and a high flue gas temperature, and on the other hand, the reaction of the wall temperature is seriously lagged behind the change of the flue gas temperature (flame temperature), and the adjustability is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problem that the monitoring of the central position of the flame of a boiler is inaccurate in the prior art is solved.
The invention solves the technical problems through the following technical means: a method for monitoring the central position of the flame of a power station boiler comprises the following steps:
s1, arranging temperature measuring elements:
the boiler furnace is provided with n layers of burners at equal intervals, the boiler furnace comprises four walls, a plurality of layers of temperature measuring elements are arranged in the boiler furnace at equal intervals from bottom to top, each layer comprises four temperature measuring elements, the four temperature measuring elements in each layer are respectively positioned in the middle of each wall, at least one layer of temperature measuring element is not higher than the position of the lowest layer of burner, and at least two layers of temperature measuring elements are arranged above the uppermost layer of burner;
s2, calculating the average temperature T of each layer of temperature measuring elementi：
Adding the temperatures measured by all the temperature measuring elements in each layer, and dividing the temperature by the number of the temperature measuring elements in each layer to obtain the average temperature T of the temperature measuring elements in each layeri；
s3 temperature of temperature measuring element and average temperature TiDifference calculation:
the temperature of each temperature measuring element of each layer is compared with the average temperature T of the layeriTaking the difference, the absolute value of which is greater than T1If the temperature is lower than the preset temperature, the temperature is measured, and the average temperature of the three temperature measuring elements is calculated to be the average temperature of the layer;
s4, calculating average temperature T of adjacent m layers of temperature measuring elementsiAverage value of (A) TAVR：
Average temperature T of adjacent m layers of temperature measuring elementsiAdding the temperature values and dividing the sum by m to obtain the average temperature T of the temperature measuring elements of the adjacent m layersAVRTaking the average temperature T of the adjacent m layers of temperature measuring elementsAVRThe highest group, the average temperature T in this groupiThe position of the highest layer of temperature measuring element is the central position of the flame of the boiler.
According to the method for monitoring the central position of the flame of the power station boiler, disclosed by the invention, the central position of the flame is calculated according to the detected temperature by measuring the temperature of the flame in the burner area of the boiler hearth, so that the central position of the flame of the boiler is monitored more accurately, the air distribution and the operation of a burner can be guided, the unreasonable combustion is avoided, the combustion economy of the boiler is optimized, and the temperature of reheated steam can be adjusted by changing the central position of the flame.
Optimized, in step s 1:
for a boiler with tangential firing at four corners, the distance between two adjacent layers of temperature measuring elements is equal to the distance between two adjacent layers of burners;
for the opposed firing boiler, the distance between two adjacent layers of temperature measuring elements is equal to half of the distance between two adjacent layers of burners.
Preferably, a layer of temperature measuring element is arranged at the position of the lowest layer of combustor.
Preferably, a layer of temperature measuring element is arranged below the lowest layer of combustor.
Preferably, two layers of temperature measuring elements are arranged above the uppermost layer of combustor.
Preferably, the temperature measuring element is an infrared temperature measuring element.
Optimally, when the temperature value measured by the temperature measuring element exceeds the normal temperature range, the combustor and the air distribution which are closest to the temperature measuring element are adjusted until the temperature values measured by all the temperature measuring elements are in the normal temperature range.
The combustion condition of a single combustor can be monitored through the temperature measuring element, if the temperature near the single combustor is found to be abnormal, the temperature can be adjusted as soon as possible, and the burning loss of the combustor and the combustion deterioration of a hearth are avoided.
Optimally, when the boiler is normally combusted, when the temperature measured by one temperature measuring element is lower than 500 ℃ or higher than 2000 ℃, or the average temperature T of the temperature measured by one temperature measuring element and the temperature measured by the temperature measuring element on the same layer is TiA phase difference exceeding T1And replacing the temperature measuring elements until the temperature values measured by all the temperature measuring elements are within the normal temperature range.
Optimized, step s 3T1The value range is 100-300.
Preferably, in step s4, m ranges from 2 to 4.
The invention has the advantages that:
1. according to the method for monitoring the central position of the flame of the power station boiler, disclosed by the invention, the central position of the flame is calculated according to the detected temperature by measuring the temperature of the flame in the burner area of the boiler hearth, so that the central position of the flame of the boiler is monitored more accurately, the air distribution and the operation of a burner can be guided, the unreasonable combustion is avoided, the combustion economy of the boiler is optimized, and the temperature of reheated steam can be adjusted by changing the central position of the flame.
2. The combustion condition of a single combustor can be monitored through the temperature measuring element, if the temperature near the single combustor is found to be abnormal, the temperature can be adjusted as soon as possible, and the burning loss of the combustor and the combustion deterioration of a hearth are avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of a boiler furnace according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a boiler furnace according to an embodiment of the present invention;
the device comprises a boiler hearth-1, a combustor-2, a temperature measuring element-3, a data transmission line-4, a flame center position calculation module-5, a horizontal flue-6, a horizontal flue gas flow direction-7 and a tail flue-8.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but 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.
A method for monitoring the central position of the flame of a power station boiler comprises the following steps:
s1, arrangement of temperature measuring element 3:
as shown in fig. 1, n layers of burners 2 are arranged in a boiler furnace 1 at equal intervals, the number of the burners 2 is set according to the actual boiler condition, the boiler furnace 1 comprises four walls, a plurality of layers of temperature measuring elements 3 are arranged in the boiler furnace 1 from bottom to top at equal intervals, each layer comprises four temperature measuring elements 3, the four temperature measuring elements 3 in each layer are respectively positioned in the middle of each wall, at least one layer of temperature measuring element 3 is not higher than the position of the burner 2 at the lowest layer, and at least two layers of temperature measuring elements 3 are arranged above the burner 2 at the uppermost layer; the temperature measuring element 3 adopts an infrared temperature measuring element which is available in the prior art.
Further, a layer of temperature measuring element 3 is arranged at the position of the lowest layer combustor 2, or a layer of temperature measuring element 3 is arranged below the lowest layer combustor 2.
Furthermore, two layers of temperature measuring elements 3 are arranged above the uppermost layer combustor 2.
For a corner tangential firing boiler, the distance between two adjacent layers of temperature measuring elements 3 is equal to the distance between two adjacent layers of burners 2, and in the prior art, the burners 2 in the corner tangential firing boiler are positioned at the corners of a wall body.
For the opposed firing boiler, the distance between two adjacent layers of temperature measuring elements 3 is equal to half of the distance between two adjacent layers of burners 2, in the opposed firing boiler in the prior art, an even number of burners 2 are arranged on each layer of the wall of the front wall and the rear wall, and the even number of burners 2 are symmetrically arranged in the middle of the wall.
If the opposed firing boiler in the prior art, each layer of the front and rear wall is provided with an odd number of burners 2, when the arrangement position of the temperature measuring element 3 interferes with the burner 2 at the middle of each layer, the temperature measuring element 3 arranged on the front and rear wall should avoid the burner 2 at the middle of each layer, and the burner 2 arranged at the middle of each layer of the middle burner 2 and the adjacent burner 2 is the adjacent burner 2 at the left or right side of the burner 2 at the middle of each layer.
As shown in fig. 1 and 2, in this embodiment, a four-corner tangential firing boiler is used for example, flue gas in the boiler flows from a horizontal flue 6 to a tail flue 8 along a horizontal flue gas flow direction 7, and a temperature measuring element 3 is connected with a flame center position calculating module 5 through a data transmission line 4, where the calculating module 5 is a calculation method provided in the present embodiment, and the computer is used for programming, and directly judging and outputting the flame center position according to the result of the temperature measuring element 3.
The distance between two adjacent layers of burners 2 in the four-corner tangential firing boiler is delta x meters, the delta x is set according to the actual situation, the distance between two adjacent layers of temperature measuring elements 3 in the embodiment is equal to the distance between two adjacent layers of burners 2, namely, the distance between two adjacent layers of temperature measuring elements 3 is delta x meters, in the embodiment, one layer of temperature measuring element 3 is arranged at the position of the burner 2 at the lowest layer, one layer of temperature measuring element 3 is arranged at intervals of delta x meters upwards, namely, each layer of temperature measuring element 3 is as high as the corresponding layer of burner 2, then two layers of temperature measuring elements 3 are arranged above the burner 2 at the uppermost layer, and the temperature measuring elements 3 count n +2 layers in total, and 4 x (n +2) temperature measuring elements 3 are arranged.
s2, calculating the average temperature T of each temperature measuring element 3i：
Calculating by using a flame center position calculating module 5, adding the temperatures measured by all the temperature measuring elements 3 in each layer, and dividing by the number of the temperature measuring elements 3 in each layer to obtain the average temperature T of the temperature measuring elements 3 in each layeri；
Specifically, each layer of temperature measuring elements 3 is numbered from bottom to top, the number of the corresponding layer is i, the number of the lowest layer i is 1, the number of the uppermost layer i is n +2, the wall body where each layer of temperature measuring elements 3 is located is numbered A, B, C, D according to the number of the front wall, the left wall, the rear wall and the right wall respectively, the temperature of the temperature measuring elements 3 on the ith layer on the front wall, the left wall, the rear wall and the right wall is T (A, i), T (B, i), T (C, i) and T (D, i) in sequence, and the average temperature T of each layer of temperature measuring elements 3 is T (A, i), T (B, i), T (C, i) and T (D, i)iThe following were used:
Ti＝AVRAGE{T(A，i),T(B，i),T(C，i),T(D，i)}(i＝1，2，3…，n+2)
s3, temperature of temperature measuring element 3 and average temperature TiDifference calculation:
the temperature of each temperature measuring element 3 of each layer is compared with the average temperature T of the layeriTaking the difference, the absolute value of which is greater than T1If the temperature is lower than the preset temperature, the temperature is discarded, and the average temperature of the rest three temperature measuring elements 3 is calculated to be the average temperature of the layer; t is1The value range is 100-300, T in this embodiment1100 is taken.
The specific function in this step is:
F(j，i)＝|T(j，i)-Ti|(j＝A，B，C，D；i＝1，2，3…，n+2)
wherein F (j, i) represents the temperature and the average temperature T of the temperature measuring element 3 on the ith layer of wall body with the number jiAbsolute value after differencing.
s4, calculating the average temperature T of the adjacent m layers of temperature measuring elements 3iAverage value of (A) TAVR：
Will be adjacent m layers of temperature measuring elementAverage temperature T of piece 3iAdding the temperature values and dividing the sum by m to obtain the average temperature T of the temperature measuring elements 3 of the adjacent m layersAVRTaking the average temperature T of the temperature measuring elements 3 of the adjacent m layersAVRThe highest group, the average temperature T in this groupiThe position of the highest layer of temperature measuring element 3 is the central position of the flame of the boiler, the value range of m is 2-4, and in the embodiment, the value of m is 3.
The specific function is:
TAVRi＝MAX[AVRAGE{Ti,Ti+1,Ti+2}](i＝1，2，3…，n)
then T is obtained through calculationAVRaAt the maximum, when i is equal to a, the average temperatures of the adjacent three temperature measuring elements 3 are respectively: t isa、Ta+1、Ta+2Then, the layer with the highest average temperature in the three layers of temperature measuring elements 3 is obtained through the following function operation:
TMAXb＝MAX{Ta，Ta+1，Ta+2} (constant b is the layer with the highest average temperature of the three layers)
The height of the flame center from the lowest temperature measuring element 3 is:
Fb＝(b-1)*△x
the flame center position is calculated by the flame center position calculating module 5, so that the air distribution and operation of the burner 2 can be guided, the unreasonable combustion is avoided, the combustion economy of the boiler is optimized, the reheated steam temperature can be adjusted by changing the flame center position, and the flame center position F is establishedbWith the reheat steam temperature TReheatFunctional relationship between, TReheat{Fb}＝f{Fb}。
Further, when the temperature value measured by the temperature measuring element 3 exceeds the normal temperature range, the burner 2 and the air distribution nearest to the temperature measuring element 3 are adjusted until the temperature values measured by all the temperature measuring elements 3 are within the normal temperature range. The above-normal temperature range here means that the temperature difference between the temperature measuring element 3 and the temperature measuring element 3 adjacent to the same layer exceeds 200 ℃.
Furthermore, when the boiler is normally combusted, the temperature measured by one temperature measuring element 3 is lower than that measured by the other temperature measuring element500 ℃ or more than 2000 ℃, or the average temperature T of the temperature measuring element and the temperature measuring element 3 on the same layeriA phase difference exceeding T1Then, the temperature measuring element 3 is replaced until the temperature values measured by all the temperature measuring elements 3 are within the normal temperature range.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for monitoring the central position of the flame of a power station boiler is characterized by comprising the following steps: the method comprises the following steps:
s1, arranging temperature measuring element (3):
n layers of burners (2) are arranged in a boiler furnace (1) at equal intervals, the boiler furnace (1) comprises four walls, a plurality of layers of temperature measuring elements (3) are arranged in the boiler furnace (1) at equal intervals from bottom to top, each layer comprises four temperature measuring elements (3), the four temperature measuring elements (3) in each layer are respectively positioned in the middle of each wall, at least one layer of temperature measuring element (3) is not higher than the position of the burner (2) at the lowest layer, and at least two layers of temperature measuring elements (3) are arranged above the burner (2) at the uppermost layer;
s2, calculating the average temperature T of each layer of temperature measuring element (3)i：
Adding the temperatures measured by all the temperature measuring elements (3) in each layer, and dividing the temperature by the number of the temperature measuring elements (3) in each layer to obtain the average temperature T of the temperature measuring elements (3) in each layeri；
s3, temperature of temperature measuring element (3) and average temperature TiDifference calculation:
the temperature of each temperature measuring element (3) of each layer is compared with the average temperature T of the layeriTaking the difference, the absolute value of which is greater than T1If the temperature is lower than the preset temperature, the temperature is discarded, and the average temperature of the rest three temperature measuring elements (3) is calculated to be the average temperature of the layer;
s4, calculating the average temperature T of the adjacent m layers of temperature measuring elements (3)iAverage value of (A) TAVR：
The average temperature T of the temperature measuring elements (3) of the adjacent m layersiAdding the temperature values and dividing the sum by m to obtain the average temperature T of the temperature measuring elements (3) of the adjacent m layersAVRTaking the average temperature T of the temperature measuring elements (3) of the adjacent m layersAVRThe highest group, the average temperature T in this groupiThe position of the highest layer of temperature measuring element (3) is the central position of the flame of the boiler.
2. The utility boiler flame center position monitoring method according to claim 1, characterized in that: in step s 1:
for a boiler with tangential firing at four corners, the distance between two adjacent layers of temperature measuring elements (3) is equal to the distance between two adjacent layers of burners (2);
for the opposed firing boiler, the distance between two adjacent layers of temperature measuring elements (3) is equal to half of the distance between two adjacent layers of burners (2).
3. The utility boiler flame center position monitoring method according to claim 1 or 2, characterized in that: a layer of temperature measuring element (3) is arranged at the position of the burner (2) at the lowest layer.
4. The utility boiler flame center position monitoring method according to claim 1 or 2, characterized in that: a layer of temperature measuring element (3) is arranged below the burner (2) at the lowest layer.
5. The utility boiler flame center position monitoring method according to claim 1 or 2, characterized in that: two layers of temperature measuring elements (3) are arranged above the uppermost layer of the combustor (2).
6. The utility boiler flame center position monitoring method according to claim 1 or 2, characterized in that: the temperature measuring element (3) adopts an infrared temperature measuring element.
7. The utility boiler flame center position monitoring method according to claim 1 or 2, characterized in that: when the temperature value measured by the temperature measuring element (3) exceeds the normal temperature range, the combustor (2) and the air distribution which are nearest to the temperature measuring element (3) are adjusted until the temperature values measured by all the temperature measuring elements (3) are within the normal temperature range, wherein the normal temperature range means that the temperature difference between the temperature measuring element (3) and the temperature measuring element (3) adjacent to the same layer is not more than 200 ℃.
8. The utility boiler flame center position monitoring method according to claim 1 or 2, characterized in that: when the boiler is normally combusted, when the temperature measured by one temperature measuring element (3) is lower than 500 ℃ or higher than 2000 ℃, or the average temperature T of the temperature measured by the temperature measuring element and the temperature measured by the temperature measuring element (3) on the same layer isiA phase difference exceeding T1And replacing the temperature measuring elements (3) until the temperature values measured by all the temperature measuring elements (3) are in a normal temperature range, wherein the normal temperature range means that the temperature difference between the temperature measuring elements (3) and the temperature measuring elements (3) adjacent to the same layer is not more than 200 ℃.
9. The utility boiler flame center position monitoring method according to claim 1 or 2, characterized in that: t in step s31The value range is 100-300.
10. The utility boiler flame center position monitoring method according to claim 1 or 2, characterized in that: in step s4, m ranges from 2 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789327.7A CN111947181B (en) | 2020-08-07 | 2020-08-07 | Method for monitoring central position of flame of power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789327.7A CN111947181B (en) | 2020-08-07 | 2020-08-07 | Method for monitoring central position of flame of power station boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111947181A CN111947181A (en) | 2020-11-17 |
| CN111947181B true CN111947181B (en) | 2022-04-12 |
Family
ID=73331943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010789327.7A Active CN111947181B (en) | 2020-08-07 | 2020-08-07 | Method for monitoring central position of flame of power station boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111947181B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183747B (en) * | 2021-10-27 | 2023-11-03 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Wall-based opposite-impact pulverized coal boiler burner burning loss prevention structure and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2004141B2 (en) * | 1970-01-30 | 1976-05-20 | Kraftwerk Union AG, 4330 Mülheim | High-ash content coal fired boiler - has horizontal flue of reduced centre height with pipes weld ending at top to reduce deposits |
| JP2002243110A (en) * | 2001-02-19 | 2002-08-28 | Hitachi Ltd | Pulverized coal boiler |
| CN106765199A (en) * | 2017-01-26 | 2017-05-31 | 荏原电产（青岛）科技有限公司 | A kind of waste incineration flame identification control method |
| CN107166429A (en) * | 2017-03-14 | 2017-09-15 | 江苏方天电力技术有限公司 | A kind of boiler furnace flame central position monitoring method |
| CN107563078A (en) * | 2017-09-08 | 2018-01-09 | 广东电网有限责任公司电力科学研究院 | A kind of flame kernel height coefficient formula modification method and device |
| CN110195860A (en) * | 2019-06-03 | 2019-09-03 | 吉林大学 | A kind of boiler corner tangential firing flame kernel offset adjustment method |
-
2020
- 2020-08-07 CN CN202010789327.7A patent/CN111947181B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2004141B2 (en) * | 1970-01-30 | 1976-05-20 | Kraftwerk Union AG, 4330 Mülheim | High-ash content coal fired boiler - has horizontal flue of reduced centre height with pipes weld ending at top to reduce deposits |
| JP2002243110A (en) * | 2001-02-19 | 2002-08-28 | Hitachi Ltd | Pulverized coal boiler |
| CN106765199A (en) * | 2017-01-26 | 2017-05-31 | 荏原电产（青岛）科技有限公司 | A kind of waste incineration flame identification control method |
| CN107166429A (en) * | 2017-03-14 | 2017-09-15 | 江苏方天电力技术有限公司 | A kind of boiler furnace flame central position monitoring method |
| CN107563078A (en) * | 2017-09-08 | 2018-01-09 | 广东电网有限责任公司电力科学研究院 | A kind of flame kernel height coefficient formula modification method and device |
| CN110195860A (en) * | 2019-06-03 | 2019-09-03 | 吉林大学 | A kind of boiler corner tangential firing flame kernel offset adjustment method |
Non-Patent Citations (1)
| Title |
|---|
| 基于水冷壁壁温的炉膛火焰中心位置预测方法;陈有福等;《发电设备》;20180531;163-167 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111947181A (en) | 2020-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107166429B (en) | A kind of boiler furnace flame central position monitoring method | |
| CN111947181B (en) | Method for monitoring central position of flame of power station boiler | |
| TWI705316B (en) | Boiler operation support device, boiler operation support method, and boiler learning model creation method | |
| CN110472274A (en) | A kind of boiler flow field thermal deviation model real-time predicting method | |
| CN112381210B (en) | Coal-fired unit water-cooling wall temperature prediction neural network model | |
| CN105408502A (en) | Device and method for controlling combustion exhaust gas of regenerative heating furnace | |
| Yao et al. | Numerical investigation of 700 C boiler flue gas thermal deviation based on orthogonal experiment | |
| CN103760191B (en) | Based on the full working scope boiler heating surface pollution monitoring method and apparatus of dynamic compensation | |
| CN104279882A (en) | Method for controlling temperature of outlet of heating furnace through participation of furnace entering flow | |
| CN111765451A (en) | Screen type superheater system | |
| CN213362403U (en) | Coal-fired unit water-cooled wall overtemperature control system based on wall temperature prediction | |
| CN110298502A (en) | Based on the boiler optimum oxygen calculation method that efficiency is optimal | |
| CN105202523A (en) | Method for calculating W flame supercritical power station boiler sewage cooling wall flue gas thermal load distribution online | |
| CN106868287B (en) | The fired heat duty distribution control method of CSP sheet billet roller-bottom types tunnel heating furnace | |
| CN112097232A (en) | Coal-fired unit water-cooled wall overtemperature control system and method based on wall temperature prediction | |
| CN103528081A (en) | Water wall differing soot blowing heat deflection reducing method for thermal power plant concurrent boiler | |
| CN111242279A (en) | System and method for predicting slagging of hearth of ultra-supercritical pulverized coal boiler | |
| CN211475901U (en) | Boiler exhaust gas temperature monitoring system considering flue gas velocity | |
| CN113124418B (en) | Method for relieving local pipe wall overtemperature of high-temperature heating surface | |
| Wei et al. | Experimental study and simulation analysis of heat and deformation in the water walls of an opposed firing boiler under flexible operating conditions | |
| CN213453601U (en) | Coal-fired unit high temperature over-temperature control system based on wall temperature prediction | |
| CN110848731A (en) | Ultra-supercritical tower boiler high-temperature heating surface pipe wall temperature measuring system | |
| CN112097243A (en) | Wall temperature prediction-based overtemperature control system and method for high-temperature superheater of coal-fired unit | |
| CN115388415B (en) | Soot blowing system and method for high-temperature area of boiler | |
| CN215411961U (en) | Over-fire air arrangement structure of four-corner tangential boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |