CN208871609U - A kind of secondary air box suitable for the swirl flow combustion boiler that liquidates - Google Patents
A kind of secondary air box suitable for the swirl flow combustion boiler that liquidates Download PDFInfo
- Publication number
- CN208871609U CN208871609U CN201821546975.4U CN201821546975U CN208871609U CN 208871609 U CN208871609 U CN 208871609U CN 201821546975 U CN201821546975 U CN 201821546975U CN 208871609 U CN208871609 U CN 208871609U
- Authority
- CN
- China
- Prior art keywords
- air
- case
- secondary air
- respectively equipped
- bellows
- 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
Abstract
The utility model discloses a kind of secondary air box suitable for the swirl flow combustion boiler that liquidates, it is equipped with partition along air supply direction among the secondary air box, secondary air box is divided into inner second air case and outer second air case two parts；The both ends of inner second air case and outer second air case are respectively equipped with air inlet and air outlet；It is respectively equipped with inner second air case at the air inlet and air outlet of inner second air case and adjusts door；It is respectively equipped with outer second air case at the air inlet and air outlet of outer second air case and adjusts door.The utility model forms the bellows of two independent air distributions, realizes the independent adjusting of inner second air and outer second air, avoid the interference mutually adjusted in a bellows by being divided into the big bellows of former Secondary Air two layers.
Description
Technical field
The utility model relates to the secondary air box of the accurate Even air distribution of boiler coal-ash combustor, and in particular to one kind is suitable for
Liquidate the secondary air box of swirl flow combustion boiler, belongs to electric power and power engineering technology field.
Background technique
In order to meet increasingly strict environmental requirement, domestic coal-burning power plant implements NOxControl technology transformation, use
Mainstream technology route is low-NO_x combustion technology+SCR gas denitrifying technology.Low-NO_x combustion technology is by using behaves such as staged air distributions
Though can effectively reduce NOxGeneration.It is more sensitive to burner air distribution using burning tissues in furnace after Researched of Air Staging Combustion Burning Pulverized Coal, it needs
Accurate uniformly training wind is carried out to burner.
And existing secondary air box is not able to satisfy burner air distribution demand.
Existing secondary air box is not able to satisfy its combustion for the swirl flow combustion boiler that liquidates using the big wind-box shape formula of static pressure
Burner air distribution demand.The secondary air box has the following problems and disadvantage:
(1) using big bellows air distribution when, due to Drag distribution, close to bellows both ends air inlet burner air inlet compared with
It is more, and the burner air inlet among bellows is few, so that distribution wind unfair is even between each burner, influences hearth combustion group
It knits.
(2) for the swirl flow combustion boiler that liquidates, the inner second air and outer second air air distribution of turbulent burner are in one
In static pressure bellows, if adjusting the air quantity of one of them, it will impacted to another.
(3) the swirl flow combustion boiler-burner outer second air that liquidates does not have air quantity damper, and adjustment air quantity needs pass through tune
Swirl vane angles are saved, and the shapes and sizes of burner recirculating zone will be impacted by adjusting blade angle, and then be influenced
Burning tissues.
Summary of the invention
Purpose of the utility model is to solve defect existing in the prior art, provide it is a kind of can carry out respectively in two
The device that secondary wind and outer second air are adjusted.
In order to achieve the above object, the utility model provides a kind of Secondary Air suitable for the swirl flow combustion boiler that liquidates
Case is equipped with partition along air supply direction among the secondary air box, secondary air box is divided into inner second air case and outer second air case two
Part；The both ends of the inner second air case and outer second air case are respectively equipped with air inlet and air outlet；The inner second air case
It is respectively equipped with inner second air case at air inlet and air outlet and adjusts door；Distinguish at the air inlet and air outlet of the outer second air case
Door is adjusted equipped with outer second air case.
By separating to secondary air box, inner second air and outer second air are adjusted respectively, are independent of each other.
Further, inner second air static pressure measurement device and outer secondary is respectively equipped on inner second air case and outer second air case
Wind static pressure measurement device.
Further, the air inlet of inner second air case and outer second air case is respectively equipped with bellows deflector.
Further, internal secondary air blade and outer second air blade are respectively equipped in inner second air case and outer second air case.
Further, inner second air static pressure measurement device and outer second air static pressure measurement device are respectively arranged on inner second air case
In the middle part of outer second air case.
The utility model has the advantage that compared with prior art
1, the big bellows of former Secondary Air are divided into two layers, form the bellows of two independent air distributions, realize inner second air and outer
The independent adjusting of Secondary Air avoids the interference mutually adjusted in a bellows；
2, inside, on outer second air case be arranged static pressure measurement device, by adjust door make quadratic power wind inside and outside burner
Input static pressure is identical；
3, deflector is set by quadratic power water conservancy diversion to bellows middle, so that bellows allocation of the amount of air closes in bellows inlet
Reason, each burner air distribution are uniform.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model secondary air box.
Specific embodiment
Hereinafter reference will be made to the drawings 1, and the preferred embodiment of this patent is described in detail.Preferred embodiment only for
Illustrate this patent, rather than in order to limit the protection scope of this patent.
The utility model secondary air box is suitable for liquidating swirl flow combustion boiler, by inner second air case 1, outer second air case 2, interior
Secondary air box adjusts door 3, outer second air case adjusts door 4, outer second air static pressure measurement device 5, inner second air static pressure measurement device
6, outer second air blade 7, internal secondary air blade 8, bellows deflector 9, bellows partition 10 form.Bellows partition 10 is by former Secondary Air
Big bellows are divided into inner second air case 1 and outer second air case 2, outer second air static pressure measurement device 5, inner second air static pressure measurement device
6 are arranged on inner second air case 1 and outer second air case 2.Deflector 9 is arranged in inner second air case 1 and outer second air
The air inlet of case 2.
Wherein, inner second air static pressure measurement device and outer second air static pressure measurement device use Rosemount pressure transmitter
It is measured etc. existing bellows static pressure measurement device.
Secondary Air adjusts door 3 by inner second air case respectively and outer second air case adjusts door 4 and enters inner second air case 1 and outer two
Secondary bellows 2, by the way that interior secondary air box 1 and inner second air static pressure measurement device 6, the outer second air on outer second air case 2 is arranged in
Static pressure measurement device 5 carries out wind quantity test, adjusts door 3 by controller control inner second air case and outer second air case adjusts door 4 and opens
Degree is adjusted so that inner second air case 1 is equal with 2 static pressure of outer second air case.Since inner second air and outer second air separate air distribution, adjust
When whole outer second air, the air distribution of inner second air will not influence.It is set simultaneously in interior secondary air box 1 and the entrance of outer second air case 2
Be equipped with bellows deflector 9, deflector 9 can by the inside secondary air box 1 of Secondary Air water conservancy diversion among outer second air case 2 so that bellows
The allocation of the amount of air of interior each burner is uniform.
The embodiment of this patent is described in examples detailed above combination attached drawing, but is not only restricted in the technical side
Case.Those skilled in the art can make modification on the basis of the art of this patent scheme according to field condition in practical application
Or deformation.
Claims (5)
1. a kind of secondary air box suitable for the swirl flow combustion boiler that liquidates, it is characterised in that: along air-supply among the secondary air box
Direction is equipped with partition, and secondary air box is divided into inner second air case and outer second air case two parts；The inner second air case and outer
The both ends of secondary air box are respectively equipped with air inlet and air outlet；It is respectively equipped at the air inlet and air outlet of the inner second air case
Inner second air case adjusts door；It is respectively equipped with outer second air case at the air inlet and air outlet of the outer second air case and adjusts door.
2. secondary air box according to claim 1, it is characterised in that: on the inner second air case and outer second air case respectively
Equipped with inner second air static pressure measurement device and outer second air static pressure measurement device.
3. secondary air box according to claim 2, it is characterised in that: the air inlet of the inner second air case and outer second air case
Bellows deflector is respectively equipped at mouthful.
4. secondary air box according to claim 3, it is characterised in that: in the inner second air case and outer second air case respectively
Equipped with internal secondary air blade and outer second air blade.
5. secondary air box according to claim 4, it is characterised in that: inner second air static pressure measurement device and outer second air are quiet
Pressure measuring device is respectively arranged in the middle part of inner second air case and outer second air case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821546975.4U CN208871609U (en) | 2018-09-21 | 2018-09-21 | A kind of secondary air box suitable for the swirl flow combustion boiler that liquidates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821546975.4U CN208871609U (en) | 2018-09-21 | 2018-09-21 | A kind of secondary air box suitable for the swirl flow combustion boiler that liquidates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208871609U true CN208871609U (en) | 2019-05-17 |
Family
ID=66468340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821546975.4U Active CN208871609U (en) | 2018-09-21 | 2018-09-21 | A kind of secondary air box suitable for the swirl flow combustion boiler that liquidates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208871609U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289278A (en) * | 2020-02-20 | 2020-06-16 | 苏州西热节能环保技术有限公司 | Method for evaluating effect of hedging coal-fired boiler after secondary air box flow field transformation |
| CN112443833A (en) * | 2019-09-05 | 2021-03-05 | 中国科学院工程热物理研究所 | Pulverized coal fired boiler with bottom burner and control method thereof |
-
2018
- 2018-09-21 CN CN201821546975.4U patent/CN208871609U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443833A (en) * | 2019-09-05 | 2021-03-05 | 中国科学院工程热物理研究所 | Pulverized coal fired boiler with bottom burner and control method thereof |
| WO2021043241A1 (en) * | 2019-09-05 | 2021-03-11 | 中国科学院工程热物理研究所 | Pulverized coal boiler with bottom combustor, and control method therefor |
| CN111289278A (en) * | 2020-02-20 | 2020-06-16 | 苏州西热节能环保技术有限公司 | Method for evaluating effect of hedging coal-fired boiler after secondary air box flow field transformation |
| CN111289278B (en) * | 2020-02-20 | 2022-04-19 | 苏州西热节能环保技术有限公司 | Method for evaluating effect of hedging coal-fired boiler after secondary air box flow field transformation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208871609U (en) | A kind of secondary air box suitable for the swirl flow combustion boiler that liquidates | |
| CN103939939B (en) | Pulverized-coal fired boiler digital combustion control and optimization method and system | |
| CN102600959B (en) | Coordinated control system and coordinated control method for powder milling system of double-entering and double-leaving coal mill | |
| CN204008417U (en) | A kind of sectional temperature-controlled coal-burning boiler high temperature corrosion and Slagging Characteristics test unit | |
| CN103953919A (en) | Burning-out air and secondary air adjusting device of pulverized coal boiler | |
| CN201582846U (en) | Combustion control system of lignite unit | |
| CN202538906U (en) | Coordinated control system of milling system of double-inlet double-outlet coal mill | |
| CN107238101A (en) | A kind of wind powder mixing temperature and flow velocity secondary regulation system | |
| CN103807852B (en) | The secondary-wind distributing device of pulverized-coal fired boiler and Secondary Air air distribution method | |
| CN206563287U (en) | A kind of Novel flue gas EGR applied to biomass layer burner | |
| CN105090949B (en) | Method for making air inflows of secondary air pipes of turbulent burner even and measuring device | |
| CN208475369U (en) | Coal-burning boiler pulverized coal preparation system | |
| CN106090885A (en) | A kind of Novel flue gas EGR being applied to biomass layer burner | |
| CN204042968U (en) | Pulverized-coal fired boiler digital combustion control and optimization system | |
| CN105698205B (en) | Throttle resistance regulating device and pulverized coal preparation system | |
| CN203258676U (en) | Combustor secondary air adjusting device | |
| CN211372390U (en) | Fluidized bed furnace device for producing tail gas and coal powder by using carbide furnace | |
| WO2022188375A1 (en) | Pulverized coal boiler integrated comprehensive adjustment method based on water-cooled wall high-temperature corrosion prevention and control | |
| CN204084340U (en) | The secondary-wind distributing device of pulverized-coal fired boiler | |
| CN209196913U (en) | The thermoregulating system of coal-fired boiler hot primary wind and part water supply heat exchange | |
| CN111256109B (en) | Method for relieving temperature deviation of tube wall of opposed coal-fired boiler | |
| CN202132940U (en) | Regulating rod device with rotating vanes | |
| CN204438100U (en) | A kind of system eliminating tangentially fired boiler both sides operation oxygen amount deviation | |
| CN108240621A (en) | Circulating fluid bed boiler secondary air system | |
| CN203718826U (en) | Turbulent burner and secondary air adjusting device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210023 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee after: Guoneng Nanjing Electric Power Test Research Co.,Ltd. Patentee after: GUODIAN FUZHOU POWER GENERATION Co.,Ltd. Patentee after: SOUTHEAST University Address before: 210023 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee before: GUODIAN NANJING ELECTRIC POWER TEST RESEARCH Co.,Ltd. Patentee before: GUODIAN FUZHOU POWER GENERATION Co.,Ltd. Patentee before: SOUTHEAST University |
|
| CP01 | Change in the name or title of a patent holder |