CN106370386B - A kind of experimental provision for observing air classification flowing in quadrangle tangential circle coal-powder boiler - Google Patents
A kind of experimental provision for observing air classification flowing in quadrangle tangential circle coal-powder boiler Download PDFInfo
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- CN106370386B CN106370386B CN201610966298.0A CN201610966298A CN106370386B CN 106370386 B CN106370386 B CN 106370386B CN 201610966298 A CN201610966298 A CN 201610966298A CN 106370386 B CN106370386 B CN 106370386B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a kind of experimental provisions of air classification flowing in observation quadrangle tangential circle coal-powder boiler, belong to flow measurement technical field of burning in coal-powder boiler.Including the quadrangle tangential circle furnace made of organic glass, it is equipped with First air unit in its bottom, two sides are respectively equipped with Secondary Air unit and burnout degree unit in the middle, and the tachymeter for measuring First air size is equipped in First air unit；It is equipped with the flowmeter I for measuring burnout degree wind speed in burnout degree unit, the flowmeter II for measuring secondary wind wind speed is equipped in Secondary Air unit.The experimental provision is simple and easy, low in cost, and visualization is strong, and cold conditions air classification obtained flow-field visualized is as a result, analog study for instructing heat state combustion process.
Description
Technical field
The invention belongs to flow measurement technical fields of burning in coal-powder boiler, and in particular to a kind of observation quadrangle tangential circle coal-powder boiler
The experimental provision of interior air classification flowing.
Background technique
Burning be evenly distributed in metallurgy and power domain extensive application, in view of quadrangle tangential circle coal-powder boiler ignition temperature and
Advantage with good air dynamic behaviour, this kind of type of furnace is by as main furnace used by power station and heating boiler
Type.Air classification technology is a kind of preferable low NOx emission-reduction technology, is gradually used by station boiler.It cuts quadrangle
Researched of Air Staging Combustion Burning Pulverized Coal process in circle coal-powder boiler belongs to complicated turbulent flowing and combustion chemistry reacts the process to intercouple, mainly
Research method is the method combined using experimental observation with numerical simulation, and experimental observations are mostly from factory, practical fortune
The measurement of velocity field, temperature field and concentration field will receive the limitation of test condition again in furnace in row, and with time-consuming and work
Measure big disadvantage.
Rarely has the experimental provision of research quadrangle tangential circle furnace air classification flowing in laboratory, at present in order to which correlative measurement is unfolded
Amount, it is necessary to propose a kind of experimental provision that can observe air classification flowing in quadrangle tangential circle coal-powder boiler.
Summary of the invention
The purpose of the present invention is to provide a kind of experimental provisions of air classification flowing in observation quadrangle tangential circle coal-powder boiler, should
The problem of rationally, visualization is strong for apparatus structure design, is able to solve existing combustion experiment research cost height and operating difficulties.
The present invention is to be achieved through the following technical solutions:
A kind of experimental provision for observing air classification flowing in quadrangle tangential circle coal-powder boiler, including four made of organic glass
Angle circle of contact furnace is equipped with First air unit in its bottom, and two sides are respectively equipped with Secondary Air unit and burnout degree unit in the middle, and one
The tachymeter for measuring First air size is equipped in secondary wind unit；It is equipped in burnout degree unit for measuring burnout degree wind speed
Flowmeter I, the interior flowmeter II being equipped with for measuring secondary wind wind speed of Secondary Air unit.
First air unit includes that primary air fan and coupled First air adapter tube, First air adapter tube are connected with feed pipe,
Two branches are stretched out on First air adapter tube, are all the way primary air piping I, another way is primary air piping II, and primary air piping I, which is connected to, to be set
It sets at the primary air nozzle I on quadrangle tangential circle furnace, primary air piping II is connected to the primary air nozzle II being arranged on quadrangle tangential circle furnace；
Primary air piping I is equipped with an air-valve I, and primary air piping II is equipped with an air-valve II.
Tachymeter is arranged on the pipeline of First air adapter tube.
Inlet valve is additionally provided on feed pipe.
Secondary Air unit includes secondary air fan and it is connected with difference Secondary Air adapter tube I and Secondary Air adapter tube II；
Two branches are stretched out on Secondary Air adapter tube I, are all the way secondary air channel I, and another way is secondary air channel II, secondary air channel
I is connected at the overfiren air port I being arranged on quadrangle tangential circle furnace, and secondary air channel II is connected to two be arranged on quadrangle tangential circle furnace
Secondary air port II；Secondary air channel I is equipped with secondary air-valve I, and secondary air channel II is equipped with secondary air-valve II；
Two branches are stretched out on Secondary Air adapter tube II, are all the way secondary air channel III, and another way is secondary air channel IV, secondary
Air hose III is connected to the overfiren air port III being arranged on quadrangle tangential circle furnace, and secondary air channel IV, which is connected to, to be arranged in quadrangle tangential circle furnace
On overfiren air port IV；Secondary air channel III is equipped with secondary air-valve III, and secondary air channel IV is equipped with secondary air-valve IV.
Flowmeter II is arranged on the pipeline of Secondary Air adapter tube I.
Burnout degree unit includes burnout degree blower and coupled burnout degree adapter tube, stretches out four branch on burnout degree adapter tube
Road, respectively after-flame air hose I, after-flame air hose II, after-flame air hose III and after-flame air hose IV；
After-flame air hose I is connected at the after-flame air port I being arranged on quadrangle tangential circle furnace, and after-flame air hose II is connected to setting and exists
At after-flame air port II on quadrangle tangential circle furnace, after-flame air hose III is connected to the after-flame air port III being arranged on quadrangle tangential circle furnace
Place, after-flame air hose IV are connected at the after-flame air port IV being arranged on quadrangle tangential circle furnace；
After-flame air hose I is equipped with after-flame air-valve I, and after-flame air hose II is equipped with after-flame air-valve II, and after-flame air hose III is equipped with
After-flame air-valve III, after-flame air hose IV are equipped with after-flame air-valve IV.
Flowmeter I is arranged on the pipeline of burnout degree adapter tube.
Compared with prior art, the invention has the following beneficial technical effects:
The experimental provision of air classification flowing in observation quadrangle tangential circle coal-powder boiler disclosed by the invention, including use organic glass
The quadrangle tangential circle furnace that glass is process is equipped with First air unit in its bottom, and two sides are respectively equipped with Secondary Air unit in the middle
With burnout degree unit, wherein primary air nozzle sprays into coal dust, and overfiren air port and after-flame air port spray into air, by adjusting First air,
The distribution of the quadrangle tangential circle fluid field in furnace under different air classifications can be observed in Secondary Air and after-flame air quantity.The experimental provision is simply easy
Row, low in cost, visualization is strong, cold conditions air classification obtained it is flow-field visualized as a result, for instructing hot combustion
The analog study of burning process.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein: 1. quadrangle tangential circle furnaces；2. after-flame air port I；3. after-flame air port II；4. after-flame air-valve I；5. after-flame air-valve II；
6. after-flame air hose I；7. after-flame air hose II；8. burnout degree is taken over；9. flowmeter I；10. after-flame blower；11. secondary air channel I；12.
Secondary air channel II；13. flowmeter II；14. Secondary Air adapter tube I；15. secondary air fan；16. primary air nozzle I；17. primary air nozzle II；
18. primary air piping I；19. an air-valve I；20. tachymeter；21. an air-valve II；22. primary air piping II；23. First air connects
Pipe；24. primary air fan；25. inlet valve；26. feed pipe；27. Secondary Air adapter tube II；28. secondary air channel III；29. secondary air channel
IV；30. No. two air-valve III；31. No. two air-valve IV；32. after-flame air hose III；33. after-flame air hose IV；34. after-flame air-valve III；
35. after-flame air-valve IV；36. after-flame air port III；37. after-flame air port IV；38. overfiren air port I；39. overfiren air port II；40. two times
Air-valve I；41. No. two air-valve II；42. overfiren air port III；43. overfiren air port IV.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
Referring to Fig. 1, the experimental provision of air classification flowing, quadrangle tangential circle furnace in observation quadrangle tangential circle coal-powder boiler of the invention
1 left side wall is sequentially installed with after-flame air port III 36, after-flame air port IV 37, overfiren air port III 42, Secondary Air from top to bottom
Mouth IV 43 and primary air nozzle I 16.After-flame air port III 36 is connected with after-flame air hose III 32, is disposed with burn-out valve IV thereon
34；After-flame air port IV 37 is connected with after-flame air hose IV 33, is disposed with combustion air-valve IV 35 thereon；The connection of overfiren air port III 42
There is secondary air channel III 28, is connected to secondary air-valve II 30 thereon；Secondary air-valve IV 31 is connected with secondary air channel IV 29, thereon
It is connected to secondary air-valve IV 31；Primary air nozzle I 16 is connected to primary air piping I 22, is equipped with an air-valve I 21 thereon.
The right-side wall of quadrangle tangential circle furnace 1 is sequentially installed with after-flame air port I 2, after-flame air port II 3, Secondary Air from top to bottom
Mouth I 38, Secondary Air II 39 and primary air nozzle II 17.After-flame air port I 2 is connected with after-flame air hose I 6, is disposed with after-flame thereon
Air-valve I 4；After-flame air port II 3 is connected with after-flame air hose II 7, is disposed with after-flame air-valve II 5 thereon；Overfiren air port I 38 connects
It is connected to secondary air channel I 11, is connected with secondary air-valve I 40 thereon；Overfiren air port II 39 is connected with secondary air channel II 12, thereon
It is connected with secondary air-valve II 41.After-flame air hose adapter tube 8 is by after-flame air hose I 6, after-flame air hose II 7,32 and of after-flame air hose III
After-flame air hose IV33 is connected and is connected with after-flame blower 10, is equipped with flowmeter I 9 on the burnout degree adapter tube 8.It is secondary
Wind adapter tube I 14 connects secondary air channel I 11 and secondary air channel II 12, and Secondary Air adapter tube II 27 is by secondary air channel III
28 and secondary air channel IV29 is connected, and accesses secondary air fan 15 jointly after connecting with Secondary Air adapter tube I 14, in Secondary Air
Flowmeter II 13 is installed on adapter tube I 14.First air adapter tube 23 connects primary air piping II 18 and primary air piping I 22
Come, and is linked into primary air fan 24.Inlet valve 25 and feed pipe 26 and tachymeter 20 are installed on First air adapter tube 23.
The experimental provision of air classification flowing in observation quadrangle tangential circle coal-powder boiler of the invention, when in use:
Coal dust enters in First air adapter tube 23 from feed pipe 26, and primary air fan 24 aspirates after air is mixed with coal dust respectively
It is sent in quadrangle tangential circle furnace 1 via primary air piping I 18 and primary air piping II 22, forms First air.First air is mounted on to connect
Tachymeter 20 on pipe 23 can measure the wind speed size of primary air nozzle I 16 and primary air nozzle II 17.Secondary air fan 15 aspirates
Air via Secondary Air adapter tube I 14 and Secondary Air adapter tube II 27 be respectively fed to secondary pipe I 11, Secondary Air adapter tube II 12,
Secondary air channel III 28 and secondary air channel IV 29.Then from overfiren air port I 38, overfiren air port II 39, overfiren air port III 42
It is admitted in quadrangle tangential circle furnace 1 with overfiren air port IV 43, forms Secondary Air.Air is via combustion in 10 draw ambient of after-flame blower
Wind adapter tube 8 to the greatest extent is respectively fed in after-flame air hose I 6, after-flame air hose II 7, after-flame air hose III 32 and after-flame air hose IV 33, and
After-flame air port I 2, the after-flame air port II connected from after-flame air hose I, after-flame air hose II, after-flame air hose III, after-flame air hose IV
3, after-flame air port III 36 and after-flame air port IV37 are fed in quadrangle tangential circle furnace 1, form burnout degree jet stream.By adjusting cloth
It sets the after-flame air-valve I 4 on after-flame air hose I 6, after-flame air hose II 7, after-flame air hose III 32 and after-flame air hose IV 33, fire
After-flame wind speed, the survey of after-flame wind speed is adjusted in the opening size of air-valve II 5, after-flame air-valve III 34 and after-flame air-valve IV 35 to the greatest extent
Amount can be measured by the flowmeter I 9 being mounted on Secondary Air adapter tube I.Similarly, by adjusting secondary air channel I 11, secondary
It is the secondary air-valve I 40 installed on air hose II 12, secondary air channel III28 and secondary air channel IV 29, secondary air-valve II 41, secondary
The measurement of the opening size of air-valve III 30 and secondary air-valve IV 31, adjustable secondary wind speed, secondary wind speed can be by being mounted on
Meter II 13 on Secondary Air adapter tube I 14 is obtained.The flow and flow rate for changing secondary air fan and burnout degree, can observe
The fluid field in furnace of different air classifications is distributed.
Claims (5)
1. the experimental provision of air classification flowing in a kind of observation quadrangle tangential circle coal-powder boiler, which is characterized in that including by organic glass
Quadrangle tangential circle furnace (1) made of glass, its bottom be equipped with First air unit, in the middle two sides be respectively equipped with Secondary Air unit and
Burnout degree unit, the interior tachymeter (20) being equipped with for measuring First air size of First air unit；It is equipped with and uses in burnout degree unit
In the flowmeter I (9) of measurement burnout degree wind speed, the interior flowmeter II being equipped with for measuring secondary wind wind speed of Secondary Air unit
(13)；
First air unit includes that primary air fan (24) and coupled First air adapter tube (23), First air take over (23) and charging
It manages (26) to be connected, First air, which is taken over, stretches out two branches on (23) be all the way primary air piping I (18), another way is primary air piping
II (22), primary air piping I (18), which are connected to, to be arranged at the primary air nozzle I (16) on quadrangle tangential circle furnace (1), primary air piping II
(22) it is connected to the primary air nozzle II (17) being arranged on quadrangle tangential circle furnace (1)；Primary air piping I (18) is equipped with an air-valve I
(19), primary air piping II (22) is equipped with an air-valve II (21)；
Secondary Air unit includes secondary air fan (15) and it is connected with difference Secondary Air adapter tube I (14) and Secondary Air adapter tube II
(27)；Two branches are stretched out on Secondary Air adapter tube I (14), are all the way secondary air channel I (11), and another way is secondary air channel II
(12), secondary air channel I (11), which is connected to, is arranged at the overfiren air port I (38) on quadrangle tangential circle furnace (1), secondary air channel II (12)
It is connected to the overfiren air port II (39) being arranged on quadrangle tangential circle furnace (1)；Secondary air channel I (11) is equipped with secondary air-valve I (40),
Secondary air channel II (12) is equipped with secondary air-valve II (41)；Two branches are stretched out on Secondary Air adapter tube II (27), are all the way secondary
Air hose III (28), another way are secondary air channel IV (29), and secondary air channel III (28), which is connected to, to be arranged on quadrangle tangential circle furnace (1)
Overfiren air port III (42), secondary air channel IV (29), which is connected to, is arranged overfiren air port IV (43) on quadrangle tangential circle furnace (1)；
Secondary air channel III (28) is equipped with secondary air-valve III (30), and secondary air channel IV (29) is equipped with secondary air-valve IV (31)；
Burnout degree unit includes burnout degree blower (10) and coupled burnout degree adapter tube (8), is stretched out on burnout degree adapter tube (8)
Four branches, respectively after-flame air hose I (6), after-flame air hose II (7), after-flame air hose III (32) and after-flame air hose IV (33)；
After-flame air hose I (6), which is connected to, to be arranged at the after-flame air port I (2) on quadrangle tangential circle furnace (1), after-flame air hose II (7) connection
To being arranged at the after-flame air port II (3) on quadrangle tangential circle furnace (1), after-flame air hose III (32), which is connected to, to be arranged in quadrangle tangential circle
At after-flame air port III (36) on furnace (1), after-flame air hose IV (33) is connected to the burnout degree being arranged on quadrangle tangential circle furnace (1)
At mouth IV (37)；
After-flame air hose I (6) is equipped with after-flame air-valve I (4), and after-flame air hose II (7) is equipped with after-flame air-valve II (5), after-flame air hose
III (32) is equipped with after-flame air-valve III (34), and after-flame air hose IV (33) is equipped with after-flame air-valve IV (35).
2. the experimental provision of air classification flowing, feature exist in observation quadrangle tangential circle coal-powder boiler according to claim 1
In tachymeter (20) setting is on the pipeline of First air adapter tube (23).
3. the experimental provision of air classification flowing, feature exist in observation quadrangle tangential circle coal-powder boiler according to claim 1
In being additionally provided with inlet valve (25) on feed pipe (26).
4. the experimental provision of air classification flowing, feature exist in observation quadrangle tangential circle coal-powder boiler according to claim 1
In flowmeter II (13) is arranged on the pipeline of Secondary Air adapter tube I (14).
5. the experimental provision of air classification flowing, feature exist in observation quadrangle tangential circle coal-powder boiler according to claim 1
In flowmeter I (9) setting is on the pipeline of burnout degree adapter tube (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610966298.0A CN106370386B (en) | 2016-11-04 | 2016-11-04 | A kind of experimental provision for observing air classification flowing in quadrangle tangential circle coal-powder boiler |
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| CN201610966298.0A CN106370386B (en) | 2016-11-04 | 2016-11-04 | A kind of experimental provision for observing air classification flowing in quadrangle tangential circle coal-powder boiler |
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| CN106370386B true CN106370386B (en) | 2019-03-08 |
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| US6470740B2 (en) * | 2000-12-28 | 2002-10-29 | Industrial Technology Research Institute | Low speed wind tunnel with adjustable moving boundary |
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| CN2856959Y (en) * | 2005-11-18 | 2007-01-10 | 张佰林 | Boiler smoke tracing tube |
| CN103335304A (en) * | 2013-06-28 | 2013-10-02 | 广东电网公司电力科学研究院 | Combustion system of corner tangential pulverized coal fired boiler |
| CN203502196U (en) * | 2013-10-17 | 2014-03-26 | 中国石油化工集团公司 | Air dynamic field test device used in boiler |
| CN105222828A (en) * | 2015-09-30 | 2016-01-06 | 东南大学 | The synchronous measuring apparatus of a kind of wall-jets velocity field and concentration field and method |
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Effective date of registration: 20190125 Address after: 422000 Li Ziyuan and Qili Ping, Daxiang District, Shaoyang City, Hunan Province Applicant after: Shaoyang University Address before: No. 2, cultural North Road, Yulin, Shaanxi Province, Shaanxi Applicant before: Yulin University |
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