CN101324340A - Apparatus for adjusting secondary wind direction under W type flame oven arch - Google Patents
Apparatus for adjusting secondary wind direction under W type flame oven arch Download PDFInfo
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- CN101324340A CN101324340A CNA2008103033815A CN200810303381A CN101324340A CN 101324340 A CN101324340 A CN 101324340A CN A2008103033815 A CNA2008103033815 A CN A2008103033815A CN 200810303381 A CN200810303381 A CN 200810303381A CN 101324340 A CN101324340 A CN 101324340A
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Abstract
The invention discloses a device for adjusting the direction of under-arch secondary air of a W-shaped flame furnace. More than two guide blades (1) are connected with each other through a connection hinge (2), a rotation shaft (3) is arranged on each guide blade (1), the guide blades (1) are arranged between an orifice plate (5) and a water-cooling wall pipe (6) of an under-arch secondary air chamber (4) of the W-shaped flame furnace, an adjusting arm (7) is arranged on one of the guide blades (1), and a pull rod (8) is connected with the adjusting arm (7). The device can set different under-arch secondary air inclination angle according to different conditions of each burner and can adjust the under-arch secondary air inclination angle to adapt to different areas (altitudes) and different coal qualities. Under proper lower inclination angle of the under-arch secondary air, the undershoot stroke of the flame and the coal retention time are increased remarkably, and the flame filling degree and uniformity in the lower furnace are improved remarkably, thus effectively improving the burn-out rate of pulverized coal and saving energy resource by about 30 to 50%.
Description
Technical field
The present invention relates to a kind of W type flame furnace, particularly relate to the device of secondary wind direction under a kind of W of adjusting type flame chimney arch.
Background technology
W shape flame burner is by strengthening a kind of combustion furnace that flame travel promotes coal combustion rate, and this technology is adopted by the boiler of domestic part power plant.It is to arrange the breeze airflow spout on arch for this combustion furnace, sidewall at combustion furnace is provided with the secondary air mouth, secondary air level thus sprays into burner hearth, but under many circumstances, encircle the descending obstruction that is subjected to secondary air of last breeze airflow, turn back ahead of time upwards, the time of staying of pulverized coal particle in burner hearth shortened, unfavorable to the after-flame of coal dust.Patent publication No. is that the application for a patent for invention of CN1851323A discloses " a kind of W type flame furnace of Underarch secondary-wind down ward-bias ", this flame furnace be the arch under secondary air box in by certain angle horizontal deflector is installed, its objective is and make secondary general mood stream by the downward-sloping burner hearth that is blown into of the angle of deflector, increase the descending degree of depth of a breeze airflow with this, improve the coal dust burn-off rate.Simultaneously, postponement secondary general mood stream mixes with a breeze airflow, suppresses the generation of NOx.But when practical operation, find effect and not satisfactory, former because: first since height above sea level difference, the ature of coal of each department change greatly, horizontal deflector in the W type flame furnace is inconvenient to regulate, thereby can not be fit to various regions and ature of coal, still have the high load capacity unstable combustion, add the wind difficulty, problem such as burning economy extreme difference, also have the high problem of the ubiquitous NOx discharging of W flame boiler simultaneously.The second fixing horizontal deflector collects ash on the refluence plate and bottom the secondary air chamber (F air compartment) easily, influences the air intake effect.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of device that is fit to all kinds of regions, ature of coal and can increases secondary wind direction under the adjusting W type flame chimney arch of coal dust firing stroke, to overcome the deficiencies in the prior art.
Technical scheme of the present invention is: it comprises the guide vane 1 more than two, guide vane 1 more than two connects by the connection hinge 2 of band connecting rod, and turning cylinder 3 is installed on every guide vane 1, and guide vane 1 is installed between the uniform flow orifice 5 and water screen tube 6 of the secondary air chamber 4 under the W type flame chimney arch by turning cylinder 3; On a guide vane 1 regulating arm 7 is installed therein, on regulating arm 7, is connected with pull bar 8.
Position and the quantity according to W type flame furnace F air port is provided with the two or more separating chambers 18 that are separated to form with longitudinal baffle 12 in the secondary separating chamber 4 under arch, guide vane (1) is arranged in the separating chamber 18, and the guide vane 1 of the same one deck in the different separating chamber 18 is fixed on the same turning cylinder 3.
Be connected through the hinge between pull bar 8 and the regulating arm 7, on regulating arm 7, offer sliding tray 9, on pull bar 8, be provided with U word groove 10 and pin-and-hole 11 with the hinged position of pull bar 8.
Turning cylinder 3 is installed in the place, equilbrium position on the guide vane 1.
On guide vane 1, offer and blow grey hole 13.
Be connected with minor flaps 14 blowing on the grey hole 13.
The diameter of pin-and-hole 11 is than the big 1～2mm of pivot pin diameter.
Regulating arm 7 levels connect or tilt to be connected on the guide vane 1.
On pull bar 8, be connected with power set.
Compared with the prior art, the present invention is by being provided with the device (similar shutter) that can regulate secondary wind direction under the arch in the secondary air chamber under the arch of W type flame furnace, so not only can secondary wind inclination angle under the different arches be set, and can adapt to different regions (height above sea level) and different atures of coal in secondary wind inclination angle down by adjusting arch according to the different situation of each burner; And machine numerical simulation calculation and field observation result show as calculated, secondary wind is under suitable tilt angled down under the arch, obviously increase towards the stroke and the coal dust time of staying under the flame, lower hearth flame degree of filling and uniformity are obviously improved, effectively improve the burn-off rate of coal dust, energy savings about 30～50%.In addition, arch secondary wind is down sent into along journey, and wind and coal dust mixed process are prolonged, and the flameholding performance is guaranteed, and can avoid the local pole high-temperature region, reduces the generation of NOx to a certain extent.The tunable performance at secondary wind inclination angle is adjusted combustion centre very effectively under the arch simultaneously, adapts to the variation of ature of coal to a certain extent preferably, and temperature is also had stronger regulating action.Position and the quantity according to W type flame furnace F air port is provided with the two or more separating chambers that are separated to form with longitudinal baffle in the secondary separating chamber under arch, guide vane is arranged in the separating chamber, and the guide vane of the same one deck in the different separating chamber is fixed on the same turning cylinder; So not only can increase secondary wind-force, control wind direction more accurately, and can reduce area, the weight reduction of guide vane, the convenient adjusting; Pull bar and regulating arm are connected through the hinge, and can make things convenient for like this, guide vane is regulated in the labour-saving.The position that is connected with pull bar on regulating arm offers sliding tray, is provided with U word groove and pin-and-hole on pull bar, such being provided with can make pull bar when regulating, only do before and after or rectilinear motion up and down, satisfy the seal request that pull bar passes bellows wall place easily; Turning cylinder is installed in the place, equilbrium position on the guide vane, the rotating torque in the time of can as far as possible reducing to regulate guide vane like this; On guide vane, offer and blow grey hole, be connected with small front apron blowing on the grey hole, like this from blow wind that grey hole enters minor flaps stop lower edge plate face operation, just the collection ash on the guide plate thoroughly can be blown off, prevent or alleviate collection ash on the guide vane; The diameter of pin-and-hole can guarantee like this that than the big 1～2mm of pivot pin diameter round pin can freely rotate (rolling), is convenient to the present invention's operation.Steady pin is installed on secondary air chamber, offers the wedge mouth at the two ends of turning cylinder, turning cylinder is connected with steady pin, and is connected with fastener on the wedge mouth, and this set can make things convenient for the installation of guide vane.The present invention simultaneously is simple in structure, only needs simple modification or transformation just can finish, and has good use value, promotional value and economic worth.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is installed in structural representation on the W type flame furnace for the present invention;
Fig. 3 is an another kind of structural representation of the present invention;
Fig. 4 is the third structural representation of the present invention;
Fig. 5 be Fig. 1 the G-G view;
Fig. 6 is a kind of D-D view of Fig. 1;
Fig. 7 is the another kind of D-D view of Fig. 1;
Fig. 8 is the I portion zoomed-in view of Fig. 4;
Fig. 9 is the II portion zoomed-in view of Fig. 6.
The specific embodiment
Embodiment:, when installation is of the present invention, earlier uniform flow orifice 5 is moved 600～800mm backward as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5.Guide vane 1 adopts steel plate to make, its quantity and size are decided with height according to the width of regulating in the secondary air chamber between back uniform flow orifice 5 and the water screen tube 6, the guide vane of being installed 1 can be illustrated in figure 7 as whole Zhang Ping's plate, and turning cylinder 3 (as Fig. 7) is installed on every guide vane 1 then; Also can be earlier under arch in the secondary separating chamber 4 position and the quantity according to W type flame furnace F air port weld longitudinal baffle 12, longitudinal baffle 12 is separated to form two or more separating chambers 18 with secondary air chamber, guide vane 1 is installed in separating chamber 18 then, and same turning cylinder 3 of guide vane 1 usefulness of the same one deck in the different separating chambers 18 connected and composed (as Fig. 6); Connect by interconnective connection hinge 2 between the guide vane 1, to reach the purpose of interlock.Guide vane 1 is installed in by turning cylinder 3 between the uniform flow orifice 5 and water screen tube 6 of secondary air chamber 4 under the arch of W type flame furnace; Mounting means is for installing and fixing pin 15 in advance on secondary air chamber 4, turning cylinder 3 is installed on every guide vane 1, turning cylinder 3 adopts hollow steel pipe to make, on the hollow steel pipe at the two ends of turning cylinder 3, offer wedge mouth 16, when mounted earlier with wedge mouth 16 secured in alignment pins 15, transfer turning cylinder 3 and make it to contact, on wedge mouth 16, connect a fastener 17 then, make the turning cylinder 3 can be from steady pin 15 come off (as Fig. 9) with steady pin 15.Turning cylinder 3 is installed in the equilbrium position place on the guide vane 1, such rotating torque that is provided with in the time of can as far as possible reducing to regulate guide vane.On a guide vane 1 regulating arm 7 is installed therein, but regulating arm 7 levels connect or the connection of tilting, regulating arm 7 can be installed on any guide vane 1, the pull bar 8 that on regulating arm 7, has been connected through the hinge, and this mechanism and shutter are similar.The position that is connected with pull bar 8 on regulating arm 7 offers sliding tray 9, is provided with U word groove 10 and pin-and-hole 11 on pull bar 8; The pivot pin diameter of hinged regulating arm 7 and pull bar 8 is than the little 1～2mm of diameter of pin-and-hole 11, and such being provided with can increase the activity flexibility (as shown in Figure 5) between pull bar 8 and the regulating arm 9; Regulating arm 7 and pull bar 8 adopt above-mentioned connected mode can make pull bar when regulating, only do before and after or rectilinear motion up and down, satisfy the seal request that pull bar passes bellows wall place easily.On guide vane 1, offer and blow grey hole 13, blow grey hole 13 and be strip, be connected with minor flaps 14 (as Fig. 8) on the grey hole 13 blowing, like this from blow wind that grey hole 13 enters minor flaps 14 stop lower edge plate face operation, just the collection ash on the guide plate 1 thoroughly can be blown off; Be provided with the seam of 10～25mm in uniform flow orifice 5 and secondary air chamber 4 bottoms, the charcoal ash that drops on like this between uniform flow orifice 5 and the secondary air chamber 4 just can be blown into burner hearth by secondary wind.Be connected with power set on pull bar 8, power set can adopt hydraulic coupling, electric power, electromagnetic force etc.
The angle that can regulate guide vane 1 according to different coal dusts when concrete the use prolongs the mixed process of coal dust and wind more, improves the combustion rate of coal dust.
Claims (10)
1. device of regulating secondary wind direction under the W type flame chimney arch, it is characterized in that: it comprises the guide vane (1) more than two, guide vane more than two (1) connects by connecting hinge (2), and turning cylinder (3) is installed on every guide vane (1), and guide vane (1) is installed between the uniform flow orifice (5) and water screen tube (6) of the secondary air chamber (4) under the W type flame chimney arch by turning cylinder (3); On the guide vane (1) regulating arm (7) is installed therein, on regulating arm (7), is connected with pull bar (8).
2. the device of secondary wind direction under the adjusting W type flame chimney arch according to claim 1, it is characterized in that: position and quantity according to W type flame furnace F air port in the secondary separating chamber (4) under arch are provided with the two or more separating chambers (18) that are separated to form with longitudinal baffle (12), guide vane (1) is arranged in the separating chamber (18), and the guide vane (1) of the same one deck in the different separating chamber (18) is fixed on the same turning cylinder (3).
3. the device of secondary wind direction under the adjusting W type flame chimney arch according to claim 1, it is characterized in that: be connected through the hinge between pull bar (8) and the regulating arm (7), offer sliding tray (9) at the position that regulating arm (7) is gone up and pull bar (8) is hinged, on pull bar (8), be provided with U word groove (10) and pin-and-hole (11).
4. the device of secondary wind direction under the adjusting W type flame chimney arch according to claim 1, it is characterized in that: turning cylinder (3) is installed in the place, equilbrium position on the guide vane (1).
5. the device of secondary wind direction is characterized in that: offer on guide vane (1) and blow grey hole (13) under the adjusting W type flame chimney arch according to claim 1.
6. the device of secondary wind direction under the adjusting according to claim 5 W type flame chimney arch is characterized in that: be connected with minor flaps (14) on the grey hole (13) blowing.
7. the device of secondary wind direction under the adjusting W type flame chimney arch according to claim 1, it is characterized in that: on the secondary air chamber (4) under the arch, steady pin (15) is installed, offer wedge mouth (16) at the two ends of turning cylinder (3), turning cylinder (3) is connected with steady pin (15), and is connected with fastener (17) on wedge mouth (16).
8. the device of secondary wind direction under the adjusting W type flame chimney arch according to claim 3, it is characterized in that: the diameter of pin-and-hole (11) is than the big 1～2mm of pivot pin diameter.
9. the device of secondary wind direction under the adjusting W type flame chimney arch according to claim 1, it is characterized in that: regulating arm (7) level connects or tilts to be connected on the guide vane (1).
10. the device of secondary wind direction is characterized in that: be connected with power set on pull bar (8) under the adjusting W type flame chimney arch according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103033815A CN101324340B (en) | 2008-08-05 | 2008-08-05 | Apparatus for adjusting secondary wind direction under W type flame oven arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103033815A CN101324340B (en) | 2008-08-05 | 2008-08-05 | Apparatus for adjusting secondary wind direction under W type flame oven arch |
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| Publication Number | Publication Date |
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| CN101324340A true CN101324340A (en) | 2008-12-17 |
| CN101324340B CN101324340B (en) | 2010-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008103033815A Expired - Fee Related CN101324340B (en) | 2008-08-05 | 2008-08-05 | Apparatus for adjusting secondary wind direction under W type flame oven arch |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235664A (en) * | 2011-07-15 | 2011-11-09 | 华电电力科学研究院 | Combustion system of W-type flame furnace |
| CN102297421A (en) * | 2011-06-27 | 2011-12-28 | 中国科学院过程工程研究所 | W-type flame decoupling combustion furnace and decoupling combustion method |
| CN102777893A (en) * | 2012-08-06 | 2012-11-14 | 贵州电力试验研究院 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
| CN104456536A (en) * | 2014-11-27 | 2015-03-25 | 清华大学 | W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable |
| CN107355807A (en) * | 2016-06-02 | 2017-11-17 | 中国大唐集团科学技术研究院有限公司 | W type flame boiler air distribution mode optimization methods |
| CN108267010A (en) * | 2018-03-28 | 2018-07-10 | 中冶长天国际工程有限责任公司 | A kind of combustion gas blowing device and blowing method eliminated crosswind and influenced |
| CN110440281A (en) * | 2019-08-20 | 2019-11-12 | 哈尔滨工业大学 | A kind of averaging type secondary air box for W flame boiler |
| CN113790440A (en) * | 2021-10-26 | 2021-12-14 | 西安热工研究院有限公司 | Primary air nozzle of pulverized coal burner |
-
2008
- 2008-08-05 CN CN2008103033815A patent/CN101324340B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297421A (en) * | 2011-06-27 | 2011-12-28 | 中国科学院过程工程研究所 | W-type flame decoupling combustion furnace and decoupling combustion method |
| CN102297421B (en) * | 2011-06-27 | 2013-06-05 | 中国科学院过程工程研究所 | W-type flame decoupling combustion furnace and decoupling combustion method |
| CN102235664A (en) * | 2011-07-15 | 2011-11-09 | 华电电力科学研究院 | Combustion system of W-type flame furnace |
| CN102777893A (en) * | 2012-08-06 | 2012-11-14 | 贵州电力试验研究院 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
| CN102777893B (en) * | 2012-08-06 | 2014-12-10 | 贵州电力试验研究院 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
| CN104456536B (en) * | 2014-11-27 | 2017-05-17 | 清华大学 | W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable |
| CN104456536A (en) * | 2014-11-27 | 2015-03-25 | 清华大学 | W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable |
| CN107355807A (en) * | 2016-06-02 | 2017-11-17 | 中国大唐集团科学技术研究院有限公司 | W type flame boiler air distribution mode optimization methods |
| CN107355807B (en) * | 2016-06-02 | 2020-01-07 | 中国大唐集团科学技术研究院有限公司 | Optimization method for air distribution mode of W-shaped flame boiler |
| CN108267010A (en) * | 2018-03-28 | 2018-07-10 | 中冶长天国际工程有限责任公司 | A kind of combustion gas blowing device and blowing method eliminated crosswind and influenced |
| CN108267010B (en) * | 2018-03-28 | 2023-10-27 | 中冶长天国际工程有限责任公司 | Gas injection device and method for eliminating influence of crosswind |
| CN110440281A (en) * | 2019-08-20 | 2019-11-12 | 哈尔滨工业大学 | A kind of averaging type secondary air box for W flame boiler |
| CN110440281B (en) * | 2019-08-20 | 2020-10-27 | 哈尔滨工业大学 | A equally divide formula secondary bellows for W flame boiler |
| CN113790440A (en) * | 2021-10-26 | 2021-12-14 | 西安热工研究院有限公司 | Primary air nozzle of pulverized coal burner |
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| Publication number | Publication date |
|---|---|
| CN101324340B (en) | 2010-08-04 |
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