CN108332197A - Air quantity adjusting method and device - Google Patents
Air quantity adjusting method and device Download PDFInfo
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- CN108332197A CN108332197A CN201711472572.XA CN201711472572A CN108332197A CN 108332197 A CN108332197 A CN 108332197A CN 201711472572 A CN201711472572 A CN 201711472572A CN 108332197 A CN108332197 A CN 108332197A
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- unit
- secondary air
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- door aperture
- air quantity
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/28—Control devices specially adapted for fluidised bed, combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a kind of air quantity adjusting method and devices.This method includes：Detect the current load of unit；The air quantity of unit is adjusted according to the unit load detected.Through the invention, control flow formula superheater temperature has been achieved the effect that.
Description
Technical field
The present invention relates to generating set fields, in particular to a kind of air quantity adjusting method and device.
Background technology
Pendant superheater occurs in the process of running in the circulating fluidized bed boiler of some power ＆ light companies, and locally tube bank wall temperature is super
Temperature, main steam and the relatively low phenomenon of reheating vapour steam temperature, in coal varitation or underrun, the local tube bank wall of pendant superheater
Warm overtemperature, main steam and reheating vapour steam temperature it is relatively low phenomenon it is more serious, it is very unfavorable to unit safety stable operation.
Occur the problem of pendant superheater locally restrains wall temperature overtemperature, mesh in the process of running for boiler in the related technology
It is preceding not yet to propose effective solution scheme.
Invention content
The main purpose of the present invention is to provide a kind of air quantity adjusting method and devices, are existed with solving boiler in the prior art
Occurs the problem of pendant superheater locally restrains wall temperature overtemperature in operational process.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of air quantity adjusting method, including：Inspection
Survey the current load of unit；The air quantity of unit is adjusted according to the unit load detected.
Further, the air quantity of unit is adjusted according to the unit load detected, including：Judge the machine detected
Whether group load is in the first pre-set interval；If the unit load detected is in first pre-set interval, before reducing
Secondary air regulation door aperture on wall.
Further, before decreasing on wall after secondary air regulation door aperture, the method further includes：After increase two on wall
Secondary wind adjusts door aperture.
Further, whether after judging the unit load detected in the first pre-set interval, the method is also wrapped
It includes：If the unit load detected increases secondary air regulation door aperture under front wall not in first pre-set interval.
Further, in the case where increasing front wall after secondary air regulation door aperture, the method further includes：After reduction two under wall
Secondary wind adjusts door aperture.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of volume adjusting apparatus, including：Inspection
Survey unit, the load current for detecting unit；Adjust unit, for according to the unit load that detects to the air quantity of unit into
Row is adjusted.
Further, the adjusting unit includes：Judgment sub-unit, whether the unit load for judging to detect is
In one pre-set interval；First regulator unit, if the unit load for detecting subtracts in first pre-set interval
Secondary air regulation door aperture on small front wall.
Further, the adjusting unit further includes：Second regulator unit, the secondary air regulation on wall before decreasing
After door aperture, secondary air regulation door aperture on wall after increase.
Further, the adjusting unit further includes：Third regulator unit, the unit load for being detected in judgement
After whether in the first pre-set interval, if the unit load detected not in first pre-set interval, increase before
Secondary air regulation door aperture under wall.
Further, the adjusting unit further includes：4th regulator unit, for the secondary air regulation in the case where increasing front wall
After door aperture, secondary air regulation door aperture under wall after reduction.
In the embodiment of the present application, the current load of detection unit, according to the unit load detected to the air quantity of unit
It is adjusted, by Air Volume Optimization, keeps fire box temperature field more uniform, solve boiler in the related technology and go out in the process of running
Existing pendant superheater locally restrains the problem of wall temperature overtemperature, has achieved the effect that control flow formula superheater temperature.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is a kind of flow chart of optional air quantity adjusting method according to the ... of the embodiment of the present invention；
Fig. 2 is that screen according to the ... of the embodiment of the present invention crosses screen position view again；
Fig. 3 is a kind of schematic diagram of optional volume adjusting apparatus according to the ... of the embodiment of the present invention.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application are clearly and completely described, it is clear that described embodiment is only
The embodiment of the application part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model of the application protection
It encloses.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so as to embodiments herein described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment those of are not necessarily limited to clearly to list step or unit, but may include without clear
It is listing to Chu or for these processes, method, product or equipment intrinsic other steps or unit.
An embodiment of the present invention provides a kind of air quantity adjusting methods.
Fig. 1 is a kind of flow chart of optional air quantity adjusting method according to the ... of the embodiment of the present invention, as shown in Figure 1, the party
Method includes the following steps：
Step S102：Detect the current load of unit.
Step S104：The air quantity of unit is adjusted according to the unit load detected.
In the embodiment of the present application, the current load of detection unit, according to the unit load detected to the air quantity of unit
It is adjusted, by Air Volume Optimization, keeps fire box temperature field more uniform, solve boiler in the related technology and go out in the process of running
Existing pendant superheater locally restrains the problem of wall temperature overtemperature, has achieved the effect that control flow formula superheater temperature.
Optionally, the air quantity of unit is adjusted according to the unit load detected, including：Judge the unit detected
Whether load is in the first pre-set interval；If the unit load detected in the first pre-set interval, reduces two on front wall
Secondary wind adjusts door aperture.Optionally, before decreasing on wall after secondary air regulation door aperture, method further includes：After increase on wall
Secondary air regulation door aperture.
For example, the first pre-set interval is [80%, 100%].
If unit load is in the first pre-set interval, unit load is larger.
Boiler is in 80% or more load condition, due to the Qian Qiang Give coals of our factory boiler, rear wall returning charge while pendant superheater cloth
Set upper furnace and close to burner hearth front wall the characteristics of, unit load upper furnace during more than 80% rated load operation
Combustion share obviously increase, when Secondary Air pitch aperture is consistent with rear wall Secondary Air pitch aperture on front wall, front wall enters stove wind
Wall enters stove air quantity after amount is significantly greater than, while center flue gas flow rate is higher in stove, and high-temperature flue gas is to tube panel among pendant superheater
Heating is washed away than stronger, is led to the screen being disposed adjacent in the middle part of burner hearth 4, is shielded 5 section tubular wall usually overtemperature.According to the above original
Because of analysis, we take following Optimized Measures：Reduce secondary air regulation door aperture on front wall, secondary air regulation on wall after increase
Door aperture, reduces upper Secondary Air front wall side with this and enters stove air quantity, the sides Secondary Air Hou Qiang enter stove air quantity, Secondary Air front wall side in raising
Enter stove air quantity and reduce the combustion share for not only reducing front wall upper lateral part in stove, while also reducing the flue gas stream of front wall side in stove
Speed makes high-temperature flue gas wash away heat effect to pendant superheater tube wall and obviously weakens, while front-back wall secondary air flow this optimization
Keep upper furnace temperature field more uniform, is not only obviously improved screen 4,5 section tubular wall overheating problems of screen, screen 4 is higher
Tube wall temperature drops to 537.5 DEG C from 544.6 DEG C, and 5 upper pipe wall temperatures of screen drop to 537.3 DEG C, while main steaming from 542.1 DEG C
Stripping temperature and reheat steam temperature have also obtained significant raising, and main steam temperature is increased to 537.4 DEG C, then hot vapour by 529.3
Temperature increases 536.3 DEG C by 531.6, reaches the requirement of 535 DEG C of pusher side nominal steam temperature.
Optionally, whether after judging the unit load detected in the first pre-set interval, method further includes：If
The unit load detected then increases secondary air regulation door aperture under front wall not in the first pre-set interval.Optionally, increasing
Under front wall after secondary air regulation door aperture, method further includes：Secondary air regulation door aperture under wall after reduction.
If unit load is not in the first pre-set interval, unit load is smaller.
Boiler load condition below 80%, unit is when less than 80% rated load operation, since main steam flow drops
It is low, the cooling effect of pendant superheater is weakened, pendant superheater tube bank wall temperature overheating problem increases, simultaneously because boiler tail
Caloric receptivity is reduced, and main steam and reheated steam steam temperature are substantially reduced, and load is lower, and these phenomenons are more apparent.Unit is less than 80%
During rated load operation, secondary air flow will be greatly reduced, and Secondary Air wind pressure enters the significant decrease of stove wind speed, to entering stove combustion
The diffusion effect of material is apparent to be weakened, and in the case where front wall is to coal, furnace coal weight is concentrated mainly on front wall side, such burner hearth
The combustion share of front wall upper lateral part is opposite to be increased, and is increased so as to cause screen 4,5 section tubular wall overheating problems of screen.According to the above reason
It analyzes us and takes following Optimized Measures：Increase secondary air regulation door aperture under front wall, turns down secondary air regulation door under rear wall
Aperture, under front wall the increase of secondary air flow its can be made to enhance the diffusion for entering stove fuel, make into stove fuel preferably to stove
Wall is spread after thorax, under rear wall reductions of secondary air flow can make the resistance reduction spread to stove inner back wall into stove fuel, this will significantly
The stove fuel that improves make to the condition of wall side diffusion after burner hearth to keep the combustion share of burner hearth front-back wall more aligned
The distribution of temperature field in furnace is more uniform, and pendant superheater section tubular wall overheating problem is not only made to be eliminated, and shields 4 upper pipe walls
Temperature drops to 539.8 DEG C from 545.3 DEG C, and 5 upper pipe wall temperatures of screen drop to 539.6 DEG C, while main steam temperature from 544.1 DEG C
Degree is increased to 536.2 DEG C by 532.2, and reheat steam temperature degree is increased to 538.8 DEG C by 533.1.
According to the variation of unit load and coal quality, by being optimized and revised to upper and lower secondary air flow and front and back secondary air flow,
Pendant superheater part tube bank wall temperature overtemperatute in boiler normal operation is set to be resolved, main steam and reheated steam steam temperature obtain
To significantly improving, the reliability and economy of unit operation are improved.
One embodiment is enumerated below.
1) .80% or more load conditions
Since our factory boiler front wall is arranged in upper furnace and close burner hearth to coal, rear wall returning charge while pendant superheater
The characteristics of front wall, unit load combustion share of upper furnace during more than 80% rated load operation obviously increases, preceding
When Secondary Air pitch aperture is consistent with rear wall Secondary Air pitch aperture on wall, front wall enters wall after stove air quantity is significantly greater than and enters stove wind
Amount, while center flue gas flow rate is higher in stove, and high-temperature flue gas washes away heating than stronger to tube panel among pendant superheater, causes
It is disposed adjacent to screen 4 in the middle part of burner hearth, shields 5 section tubular wall usually overtemperature (being more than 545 DEG C of specified value) (see Fig. 2).
It is bigger with other each screen temperature deviations, it is that the section tubular wall overtemperature of screen 4, screen 5 is avoided to take increase by one in operation
Grade spray water flux, reduces intermediate furnace coal weight (reducing 3#, 4# feeder rotating speed), and 4,5 parts of screen pipe is not only shielded in these measures
Wall overheating problem without be improved significantly, also reduce two side outlet steam temperature of pendant superheater, cause main steam steam temperature cannot
Reach 535 DEG C of the specified main steam temperature of pusher side requirement, design parameter is shown in Table 1.
Table 1
According to the above analysis of causes, we take following Optimized Measures：Reduce secondary air regulation door 1 and front wall on front wall
The aperture of upper secondary air regulation door 2 drops to 25% from 50%, and secondary air regulation door aperture on wall, increases to from 50% after increase
100%, upper Secondary Air front wall side is reduced with this and enters stove air quantity, the sides Secondary Air Hou Qiang enter stove air quantity, Secondary Air front wall side in raising
Enter stove air quantity and reduce the combustion share for not only reducing front wall upper lateral part in stove, while also reducing the flue gas stream of front wall side in stove
Speed makes high-temperature flue gas wash away heat effect to pendant superheater tube wall and obviously weakens, while front-back wall secondary air flow this optimization
Keep upper furnace temperature field more uniform, is not only obviously improved screen 4,5 section tubular wall overheating problems of screen, screen 4 is higher
Tube wall temperature drops to 537.5 DEG C from 544.6 DEG C, and 5 upper pipe wall temperatures of screen drop to 537.3 DEG C from 542.1 DEG C, while making each
Temperature deviation between screen is obviously reduced, and the temperature difference between 4 upper pipe walls of screen 1 and screen drops to 11.4 DEG C by pervious 40.9 DEG C,
The range of decrease is 30.5 DEG C, improves two side outlet steam temperature of pendant superheater, and pendant superheater A side outlets steam temperature is increased by 508.4 DEG C
To 519.9 DEG C, pendant superheater B side outlets steam temperature is increased to 522.8 DEG C by 518.3 DEG C, while main steam temperature and reheating are steamed
Stripping temperature has also obtained significant raising, and main steam temperature is increased to 537.4 DEG C by 529.3, and reheat steam temperature degree is increased by 531.6
536.3 DEG C, reach the requirement of 535 DEG C of pusher side nominal steam temperature, parameter is shown in Table 2.
Table 2
2) .80% or less load conditions
Unit is when less than 80% rated load operation, since main steam flow reduces, is imitated to the cooling of pendant superheater
Fruit weakens, and pendant superheater tube bank wall temperature overheating problem increases, simultaneously because boiler tail caloric receptivity is reduced, main steam and reheating
Steam steam temperature is substantially reduced, and load is lower, and these phenomenons are more apparent.Unit is secondary during less than 80% rated load operation
Air quantity will be greatly reduced, and Secondary Air wind pressure enters the significant decrease of stove wind speed, and the diffusion to entering stove fuel, which acts on, obviously to be subtracted
Weak, in the case where front wall is to coal, furnace coal weight is concentrated mainly on front wall side, the combustion share phase of such burner hearth front wall upper lateral part
To increasing, increase so as to cause screen 4,5 section tubular wall overheating problems of screen, design parameter is shown in Table 3.
Table 3
According to the above analysis of causes, we take following Optimized Measures：
2 aperture of secondary air regulation door under secondary air regulation door 1 under front wall and front wall is increased from 55% to 60%, it will be under rear wall
Secondary air regulation door aperture is reduced to 15% from 55%, under front wall the increase of secondary air flow it can be made to disturb the diffusion for entering stove fuel
Dynamic enhancing, makes stove fuel preferably be spread to wall after burner hearth, under rear wall the reduction of secondary air flow stove fuel can be made into stove
The resistance of wall diffusion reduces afterwards, this will greatly improved condition of the stove fuel to wall side diffusion after burner hearth, to make burner hearth
The combustion share of front-back wall is more aligned, keeps the distribution of temperature field in furnace more uniform, not only makes pendant superheater section tubular wall
Overheating problem is eliminated, and 4 upper pipe wall temperatures of screen drop to 539.8 DEG C from 545.3 DEG C, shields 5 upper pipe wall temperatures from 544.1
DEG C drop to 539.6 DEG C, while the temperature deviation between each screen being made to be obviously reduced, the temperature difference between 4 upper pipe walls of screen 1 and screen by
Pervious 32.2 DEG C drop to 22.6 DEG C, and the range of decrease is 9.6 DEG C, improves two side outlet steam temperature of pendant superheater, the sides pendant superheater A
Outlet steam temperature is increased to 515.4 DEG C by 510.9 DEG C, and pendant superheater B side outlets steam temperature is increased to 523.1 DEG C by 517.4 DEG C, master
Steam temperature, reheat steam temperature also significantly improve, and main steam temperature is increased to 536.2 DEG C by 532.2, and reheat steam temperature degree is by 533.1 liters
For height to 538.8 DEG C, design parameter is shown in Table 4.
Table 4
By using the optimization method of the above secondary air flow, #1, #2 CFB boiler screen superheater section tubular wall
Overheating problem is eliminated, and main steam and reheated steam steam temperature have obtained significant raising, to be born according to unit in operational process
The variation of the factors such as lotus, coal quality optimizes adjustment to Secondary Air, to ensure unit safety stable operation.
By optimizing and revising each layer secondary air flow, #1, #2 CFB boiler screen superheater section tubular wall overtemperature are existing
As being eliminated, main steam and reheated steam steam temperature have obtained significant raising, will be according to unit load, coal quality in operational process
Etc. the variations of factors adjustment is optimized to Secondary Air, to ensure unit safety stable operation.
The embodiment of the present application also provides a kind of volume adjusting apparatus, the device is for executing above-mentioned air quantity adjusting method.
Fig. 3 is a kind of schematic diagram of optional volume adjusting apparatus according to the ... of the embodiment of the present invention.
As shown in figure 3, the device includes：Detection unit 10 adjusts unit 20.
Detection unit 10, the load current for detecting unit.
Unit 20 is adjusted, for the air quantity of unit to be adjusted according to the unit load detected.
Optionally, adjusting unit 20 includes：Judgment sub-unit, the first regulator unit.Judgment sub-unit, for judging inspection
Whether the unit load measured is in the first pre-set interval.First regulator unit, if the unit load for detecting exists
In first pre-set interval, then reduce secondary air regulation door aperture on front wall.
Optionally, adjusting unit 20 further includes：Second regulator unit.Second regulator unit, for wall before decreasing
After upper secondary air regulation door aperture, secondary air regulation door aperture on wall after increase.
Optionally, adjusting unit 20 further includes：Third regulator unit.Third regulator unit, for judging to detect
After whether the unit load gone out in the first pre-set interval, if the unit load detected not in the first pre-set interval,
Then increase secondary air regulation door aperture under front wall.
Optionally, adjusting unit 20 further includes：4th regulator unit.4th regulator unit, for increasing front wall
After lower secondary air regulation door aperture, secondary air regulation door aperture under wall after reduction.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, the application can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to method, the flow of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include computer-readable medium in volatile memory, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology realizes information storage.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic tape cassette, tape magnetic disk storage or other magnetic storage apparatus
Or any other non-transmission medium, it can be used for storage and can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Including so that process, method, commodity or equipment including a series of elements include not only those elements, but also wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including element
There is also other identical elements in process, method, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can be provided as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
It these are only embodiments herein, be not intended to limit this application.To those skilled in the art,
The application can have various modifications and variations.It is all within spirit herein and principle made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of claims hereof.
Claims (10)
1. a kind of air quantity adjusting method, which is characterized in that including：
Detect the current load of unit；
The air quantity of unit is adjusted according to the unit load detected.
2. air quantity adjusting method according to claim 1, which is characterized in that according to the unit load detected to unit
Air quantity is adjusted, including：
Judge the unit load detected whether in the first pre-set interval；
If the unit load detected in first pre-set interval, reduces secondary air regulation door aperture on front wall.
3. air quantity adjusting method according to claim 2, which is characterized in that secondary air regulation door aperture on wall before decreasing
Later, the method further includes：
Secondary air regulation door aperture on wall after increase.
4. air quantity adjusting method according to claim 2, which is characterized in that judge the unit load that detects whether
After in first pre-set interval, the method further includes：
If the unit load detected increases secondary air regulation door aperture under front wall not in first pre-set interval.
5. air quantity adjusting method according to claim 4, which is characterized in that the secondary air regulation door aperture in the case where increasing front wall
Later, the method further includes：
Secondary air regulation door aperture under wall after reduction.
6. a kind of volume adjusting apparatus, which is characterized in that including：
Detection unit, the load current for detecting unit；
Unit is adjusted, for the air quantity of unit to be adjusted according to the unit load detected.
7. volume adjusting apparatus according to claim 6, which is characterized in that the adjusting unit includes：
Judgment sub-unit, whether the unit load for judging to detect is in the first pre-set interval；
First regulator unit, if the unit load for detecting reduces in first pre-set interval on front wall
Secondary air regulation door aperture.
8. volume adjusting apparatus according to claim 7, which is characterized in that the adjusting unit further includes：
Second regulator unit, on wall before decreasing after secondary air regulation door aperture, secondary air regulation on wall after increase
Door aperture.
9. volume adjusting apparatus according to claim 7, which is characterized in that the adjusting unit further includes：
Third regulator unit, after in the unit load that judgement detects whether in the first pre-set interval, if inspection
The unit load measured then increases secondary air regulation door aperture under front wall not in first pre-set interval.
10. volume adjusting apparatus according to claim 9, which is characterized in that the adjusting unit further includes：
4th regulator unit, after the secondary air regulation door aperture in the case where increasing front wall, secondary air regulation under wall after reduction
Door aperture.
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| CN201711472572.XA CN108332197B (en) | 2017-12-28 | 2017-12-28 | Air quantity adjusting method and device |
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|---|---|---|---|
| CN201711472572.XA CN108332197B (en) | 2017-12-28 | 2017-12-28 | Air quantity adjusting method and device |
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| CN108332197A true CN108332197A (en) | 2018-07-27 |
| CN108332197B CN108332197B (en) | 2019-10-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631074A (en) * | 2018-12-03 | 2019-04-16 | 河南华润电力首阳山有限公司 | A kind of hot steam extraction utilization system and method again |
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| CN106556008A (en) * | 2016-11-30 | 2017-04-05 | 大唐鸡西第二热电有限公司 | Large circulating fluidized bed boiler vast scale mixes burned coal gangue coal mud method simultaneously |
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| CN109631074A (en) * | 2018-12-03 | 2019-04-16 | 河南华润电力首阳山有限公司 | A kind of hot steam extraction utilization system and method again |
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