CN202561738U - Tangential cyclone air inlet mechanism for pulverized coal burner - Google Patents
Tangential cyclone air inlet mechanism for pulverized coal burner Download PDFInfo
- Publication number
- CN202561738U CN202561738U CN2012202209592U CN201220220959U CN202561738U CN 202561738 U CN202561738 U CN 202561738U CN 2012202209592 U CN2012202209592 U CN 2012202209592U CN 201220220959 U CN201220220959 U CN 201220220959U CN 202561738 U CN202561738 U CN 202561738U
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- China
- Prior art keywords
- air inlet
- inlet mechanism
- coal burner
- buffer rail
- blade
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Abstract
The utility model discloses a tangential cyclone air inlet mechanism for a pulverized coal burner, wherein the tangential cyclone air inlet mechanism comprises a fixed rail (10), an adjusting rail (11), a plurality of guide vane assemblies (12) and a driving assembly (14); the adjusting rail (11) is rotatably arranged on the fixed rail (10); the plurality of guide vane assemblies (12) are arranged on the adjusting rail (11) and distributed at intervals along the circumferential direction of the adjusting rail (11); and the driving assembly (14) is used for driving the adjusting rail (11) to rotate. The tangential cyclone air inlet mechanism for the pulverized coal burner, provided by the utility model, is simpler in structure and easy to realize.
Description
Technical field
The utility model relates to coal burner, particularly, relates to a kind of tangential swirl air inlet mechanism that is used for coal burner.
Background technology
In coal burner, regulate the swirl strength of secondary wind through the eddy flow air inlet mechanism usually, thereby increase or reduce the time of staying of coal dust, reach steady combustion, effect such as combustion-supporting.Yet the structure of the eddy flow air inlet mechanism that uses in the existing coal burner is comparatively complicated.
The utility model content
The purpose of the utility model provides the tangential swirl air inlet mechanism that a kind of structure comparatively simply is used for coal burner.
To achieve these goals; The utility model provides a kind of tangential swirl air inlet mechanism that is used for coal burner; Wherein, this tangential swirl air inlet mechanism comprises fixed track, buffer rail, a plurality of pre-rotary vane assembly and driven unit, and said buffer rail is rotatably installed on the said fixed track; Said a plurality of pre-rotary vane assembly is installed on the said buffer rail and circumferentially spaced apart along said buffer rail, and said driven unit is used to drive said buffer rail rotation.
Preferably, this tangential swirl air inlet mechanism also comprises end plate, and said fixed track and buffer rail are annular, and said fixed track is fixedly mounted on the said end plate.
Preferably; Said pre-rotary vane assembly comprises blade handle and blade; One end of said blade handle is connected with said vanes fixed and is pivotally connected on the said fixed track through first bearing pin, and the other end of said blade handle is movably connected on said buffer rail.
Preferably, the other end of said blade handle is provided with the slotted hole that extends along the length direction of said blade handle, and said blade handle is connected with said buffer rail through second bearing pin that inserts in the said slotted hole.
Preferably, said driven unit comprise gear and with the intermeshing gear ring of said gear, said gear ring is arranged on the inner surface of said buffer rail, the center of said gear is connected with axle, this axle passes said end plate and stretches out.
Preferably, be connected with handle on the said axle.
Preferably, be provided with scale with the terminal corresponding position of said handle on the said end plate.
Preferably, be provided with the water-cooled interlayer in the said end plate.
The structure of the tangential swirl air inlet mechanism that is used for coal burner that the utility model provides is comparatively simple, is easy to realize.The tangential swirl air inlet mechanism that is used for coal burner that provides through the utility model; The combustion air flow field characteristic of needs is selected blade construction in the time of can be according to coal and other fuel combustion; To reach the purpose of regulating the coal dust and the time of staying of other fuel in precombustion chamber through the eddy flow angle that changes blade construction and adjusting tangential swirl air inlet mechanism; Reach the aerodynamic field that good wind powder mixes; Raising is to the conformability of coal, and the initial stage that guarantees coal dust lights and the steady combustion in later stage.
Other feature and advantage of the utility model will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with the following specific embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the general structure sketch map of the coal burner that provides of the utility model;
Fig. 2 is the part-structure sketch map of the coal burner that provides of the utility model;
Fig. 3 is the structural representation of the tangential swirl air inlet mechanism that is used for coal burner that provides of the utility model;
Fig. 4 is the cross-sectional schematic of the tangential swirl air inlet mechanism that is used for coal burner that provides of the utility model;
Fig. 5 is the structural representation of igniting air gun of the igniter of the coal burner that provides of the utility model;
Fig. 6 is the structural representation of oil gun of the igniter of the coal burner that provides of the utility model.
Description of reference numerals
1: precombustion chamber; 2: burner hearth; 3: the air feed unit; 4: first; 5: second portion; 6: interface; 7: air compartment; 8: the tangential swirl air inlet mechanism; 9: air inlet; 10: fixed track; 11: buffer rail; 12: pre-rotary vane assembly; 13: end plate; 14: driven unit; 15: the first bearing pins; 16: flange; 17: gear; 18: gear ring; 19: axle; 20: handle; 21: the water-cooled interlayer; 22: igniter; 23: the igniting air gun; 24: oil gun; 25: the igniting binding post; 26: windproof protection tube; 27: sparking electrode; 28: jet pipe; 29: atomizer; 30: the flame monitoring system; 31: protective cover; 32: the blade handle; 33: blade; 34: installing hole; 35: the liquefaction air gun; 36: the coal dust playpipe; 37: slotted hole; 38: the second bearing pins; 39: the end of handle.
The specific embodiment
Be elaborated below in conjunction with the specific embodiment of accompanying drawing to the utility model.Should be understood that the specific embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
Below, the have particular application as routine tangential swirl air inlet mechanism that the utility model provided of tangential swirl air inlet mechanism in coal burner that provides with the utility model is elaborated.
As depicted in figs. 1 and 2; Said coal burner comprises precombustion chamber 1, burner hearth 2 and is used for the air feed unit 3 to said precombustion chamber 1 air feed; The port of export of said precombustion chamber 1 links to each other with said burner hearth 2 and communicates, and is inserted with igniter 22 and coal dust playpipe 36 in the said precombustion chamber 1.
The volume of precombustion chamber 1 is usually less than the volume of burner hearth 2.Precombustion chamber 1 can be taked various suitable structures.A kind of preferred implementation according to the utility model; Said precombustion chamber 1 has first 4 that is connected with said burner hearth 2 and the second portion 5 that is connected with this first 4; Said first 4 is the changeless column of cross-sectional area, and said second portion 5 is the frustum that cross-sectional area increases towards said burner hearth 2 gradually.Like this, can enough reaction compartments be provided for the primary combustion of lighting of coal dust.Precombustion chamber 1 can take various suitable modes to interconnect with burner hearth 2, for example is fastenedly connected or welds.First 4 interconnects with the mode that second portion 5 can be taked to be fastenedly connected or to weld, also can be integrally formed.Especially, first 4 can be for cylindric, and second portion 5 can be circular cone shape.
Air feed unit 3 is used for to precombustion chamber 1 secondary wind being provided.Air feed unit 3 comprises the tangential swirl air inlet mechanism 8 that air compartment 7 and the utility model provide; Said tangential swirl air inlet mechanism 8 is connected with the arrival end of said precombustion chamber 1; Said air compartment 7 communicates with said tangential swirl air inlet mechanism 8, and said air compartment 7 is provided with air inlet 9.Like this; Can regulate the swirl strength of tangential swirl air inlet mechanism 8 according to ature of coal and combustion case; Thereby regulate the time of staying of coal dust in precombustion chamber 1; Reach the aerodynamic field that good wind powder mixes, improve the conformability to coal, the initial stage that guarantees coal dust lights and the steady combustion in later stage.
Like Fig. 3 and shown in Figure 4; The tangential swirl air inlet mechanism that is used for coal burner that the utility model provides comprises fixed track 10, buffer rail 11, a plurality of pre-rotary vane assembly 12 and driven unit 14; Said buffer rail 11 is rotatably installed on the said fixed track 10; Said a plurality of pre-rotary vane assembly 12 is installed on the said buffer rail 11 and circumferentially spaced apart along said buffer rail 11, and said driven unit 14 is used to drive said buffer rail 11 rotations.Wherein, said fixed track 10 is connected with the arrival end of said precombustion chamber 1.
The structure of the tangential swirl air inlet mechanism that is used for coal burner that the utility model provides is comparatively simple, is easy to realize.
Arrange that for ease preferably, the tangential swirl air inlet mechanism that is used for coal burner that the utility model provides also comprises end plate 13, said fixed track 10 is annular with buffer rail 11, and said fixed track 10 is fixedly mounted on the said end plate 13.End plate 13 is mainly used in and stops secondary wind, makes secondary wind pass through tangential swirl air inlet mechanism 8 and in precombustion chamber 1, flows.As selection, a part that also can fixed track 10 is set to circle, thereby stops secondary wind through the end face of fixed track 10.Fixed track 10 can be fixedly mounted on the end plate 13 through for example securing member.Buffer rail 11 can be rotatably installed on the fixed track 10 through various suitable modes, for example on the interior perimeter surface of fixed track 10, groove is set, and buffer rail 11 is stuck in this groove.In this case, igniter 22 inserts in the precombustion chamber 1 through end plate 13 with coal dust playpipe 36.As shown in Figure 4, end plate 13 is provided with installing hole 34, so that igniter 22 inserts in the precombustion chamber 1 through this installing hole 34 with coal dust playpipe 36.
Said air compartment 7 communicates with said tangential swirl air inlet mechanism 8.Particularly, said air compartment 7 can be arranged around the arrival end and the said tangential swirl air inlet mechanism 8 of said precombustion chamber 1.
Fixed track 10 can take various suitable modes to be connected with the arrival end of precombustion chamber 1, and for ease being connected between fixed track 10 and the precombustion chamber 1, preferably, said fixed track 10 is connected with the arrival end of said precombustion chamber 1 through interface 6.Particularly, an end of interface 6 docks and leaves expansion space with the arrival end of precombustion chamber 1, and the other end of interface 6 can pass through securing member (for example bolt) and be connected with fixed track 10.
Interface 6 can be taked various suitable shapes, according to a kind of preferred implementation of the utility model, and the frustum that said interface 6 reduces towards said burner hearth 2 for cross-sectional area gradually.Can help the backflow and the smooth combustion of hot flue gas in the precombustion chamber 1 like this.Especially, interface 6 can be circular cone shape.
For blade 33 can stably be rotated, preferably, be formed with flange 16 on the said interface 6, a said end of said blade handle 32 is pivotally connected on the said flange 16 through said first bearing pin 15.In this case, the flange 16 of interface 6 is connected with fixed track 10.
One end of blade handle 32 can for example be fixedly connected through the mode of welding with first bearing pin 15, and insert respectively in fixed track 10 and the flange 16 rotationally at the two ends of first bearing pin 15.In this case, blade 33 also can directly be fixedly connected with first bearing pin 15, and directly is not fixedly connected with blade handle 32, that is to say, blade 33 is fixedly connected with blade handle 32 through first bearing pin 15.As selection, the two ends of first bearing pin 15 can for example be fixedly connected through the mode of welding with flange 16 with fixed track 10 respectively, and an end of blade handle 32 is enclosed within on first bearing pin 15 rotationally.
Processing for ease, preferably, the other end of said blade handle 32 is provided with the slotted hole 37 that extends along the length direction of said blade handle 32, and said blade handle 32 is connected with said buffer rail 11 through second bearing pin 38 that inserts in the said slotted hole 37.Particularly, second bearing pin 38 for example is fixedly connected through the mode of welding with buffer rail 11, and when buffer rail 11 rotated, blade handle 32 can move along the length direction of slotted hole 37 when rotating along with buffer rail 11.Said slotted hole 37 can be for example mounting hole.As selection, also can on buffer rail 11, slotted hole be set, and make second bearing pin 38 for example be fixedly connected and insert in the said slotted hole through the mode of welding with the other end of blade handle 32.
One end of blade handle 32 can be fixedly connected with blade 33 through for example welding or the mode that is fastenedly connected.The shape of blade 33 is relevant with the structure of precombustion chamber 1, can simulate the shape of blade 33 through cold conditions experiment and simulation software.
For swing pinion 17 easily, preferably, be connected with handle 20 on the said axle 19.Handle 20 can be fixedly connected with axle 19 through the mode of for example welding.
Measure the anglec of rotation of blade 33 for ease, preferably, the end 39 corresponding positions with said handle 20 on the said end plate 13 are provided with the scale (not shown).
According to a kind of preferred implementation of the utility model, be provided with water-cooled interlayer 21 in the said end plate 13.Like this, can cool off, prevent their damages through 21 pairs of sensor and electrical equipments that insert through this end plate 13 of water-cooled interlayer.
Igniter 22 can be taked various suitable structures.According to a kind of preferred implementation of the utility model, said igniter 22 comprises igniting air gun 23 and oil gun 24.Like this, can be earlier through igniting air gun 23 liquefied gas that ignites, light the back through oil gun 24 oil spouts at liquefied gas, precombustion chamber 1 in, mix combustion at secondary flame under the condition of eddy flow air distribution, flame is full of whole precombustion chamber 1, behind condition maturity, begins the coal supply powder.Like this, adopt gas, oily two-stage firing technique, stable ignition can reduce the initial stage ignition energy step by step, and oil gas burning and coal dust firing air distribution at the same level are beneficial to and light the stable of moment, prevent detonation.
Igniting air gun 23 can be taked various suitable structures; For example; As shown in Figure 5, said igniting air gun 23 can comprise liquefaction air gun 35, igniting binding post 25, windproof protection tube 26 and sparking electrode 27, and said liquefaction air gun 35 stretches in the said windproof protection tube 26; Said sparking electrode 27 is arranged in said windproof protection tube 26 and is connected with said liquefaction air gun 35, and said igniting binding post 25 is connected with said sparking electrode 27 and from said windproof protection tube 26, stretches out.
According to a kind of preferred implementation of the utility model, be inserted with flame monitoring system 30 in the said precombustion chamber 1, this flame monitoring system 30 can insert through end plate 13.Like this, can come monitors ignition situation and coal dust firing situation through flame monitoring system 30, generation with stove implode accident prevents to put out a fire.The structure of flame monitoring system 30 is conventionally known to one of skill in the art, and for example, flame monitoring system 30 can comprise industrial shooting, peep hole and flame monitoring apparatus.
For igniter 22 is protected with flame monitoring system 30; Prevent that dust from falling into; Preferably; This coal burner also comprises protective cover 31, and this protective cover 31 shrouds said igniter 22, coal dust playpipe 36 and flame monitoring system 30, and wherein said coal dust playpipe 36 stretches out from said protective cover 31.As shown in Figure 2, protective cover 31 is fixedly connected with end plate 13.
The structure of burner hearth 2 is conventionally known to one of skill in the art, repeats no more at this.The port of export of said precombustion chamber 1 can take various suitable modes to be connected with said burner hearth 2, for example is fastenedly connected or welds.It should be noted that and insert in the precombustion chambers 1 through end plate 13 and axle 19 when passing end plate 13 and stretching out when igniter 22, coal dust playpipe 36 and flame monitoring system 30, need to guarantee the sealing property of end plate 13, reveal to prevent secondary wind.
Below, describe in conjunction with the course of work of accompanying drawing above-mentioned coal burner.
Extremely shown in Figure 6 like Fig. 1; At first, light the back through oil gun 24 oil spouts, mix precombustion chamber 1 at secondary flame under the condition of eddy flow air distribution and fire at liquefied gas through igniting air gun 23 liquefied gas that ignites; Flame is full of whole precombustion chamber 1; Beginning coal supply powder behind condition maturity, pulverized coal flow is lighted rapidly and high-velocity combustion, high concentration pulverized coal flame ignition ejiction opening dilute phase coal dust subsequently by thermal-flame in precombustion chamber 1; Rely on that being rotated in of air-flow is indoor entrainments high-temperature flue gas and form strong backflow, inject in the burner hearth 2 after making flame stabilization.In the ignition process and combustion process of coal burner, can regulate through the swirl strength of 8 pairs of secondary wind of tangential swirl air inlet mechanism, promptly rotary handle 20; Drive axle 19 and then driven gear 17 rotations through handle 20; Gear 17 drives gear ring 18 rotations, and then drives buffer rail 11 rotations, and buffer rail 11 drives blade handle 32 and moves; Blade handle 32 drives blade 33 then, makes the suitable angle of blade 33 rotations.When blade eddy flow angle cuts angle when becoming big, the secondary wind tangential gets into swirl strength and dies down, thereby reduces the time of staying of coal dust in precombustion chamber 1; When blade eddy flow angle cuts angle when diminishing, the secondary wind tangential gets into the swirl strength grow, thereby increases the time of staying of coal dust in precombustion chamber 1.In addition, in the ignition process and combustion process of coal burner, can also come monitors ignition situation and coal dust firing situation through flame monitoring system 30, generation with stove implode accident prevents to put out a fire.
The tangential swirl air inlet mechanism that is used for coal burner that provides through the utility model; The combustion air flow field characteristic of needs is selected blade construction in the time of can be according to coal and other fuel combustion; To reach the purpose of regulating the coal dust and the time of staying of other fuel in precombustion chamber 1 through the eddy flow angle that changes blade construction and adjusting tangential swirl air inlet mechanism 8; Reach the aerodynamic field that good wind powder mixes; Raising is to the conformability of coal, and the initial stage that guarantees coal dust lights and the steady combustion in later stage.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned embodiment; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technical scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various embodiment of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (8)
1. tangential swirl air inlet mechanism that is used for coal burner; It is characterized in that; This tangential swirl air inlet mechanism comprises fixed track (10), buffer rail (11), a plurality of pre-rotary vane assembly (12) and driven unit (14); Said buffer rail (11) is rotatably installed on the said fixed track (10); Said a plurality of pre-rotary vane assembly (12) is installed in that said buffer rail (11) is gone up and circumferentially spaced apart along said buffer rail (11), and said driven unit (14) is used to drive said buffer rail (11) rotation.
2. the tangential swirl air inlet mechanism that is used for coal burner according to claim 1; It is characterized in that; This tangential swirl air inlet mechanism also comprises end plate (13); Said fixed track (10) and buffer rail (11) are annular, and said fixed track (10) is fixedly mounted on the said end plate (13).
3. the tangential swirl air inlet mechanism that is used for coal burner according to claim 2; It is characterized in that; Said pre-rotary vane assembly (12) comprises blade handle (32) and blade (33); One end of said blade handle (32) is fixedly connected with said blade (33) and is pivotally connected on the said fixed track (10) through first bearing pin (15), and the other end of said blade handle (32) is movably connected on said buffer rail (11).
4. the tangential swirl air inlet mechanism that is used for coal burner according to claim 3; It is characterized in that; The other end of said blade handle (32) is provided with the slotted hole (37) that extends along the length direction of said blade handle (32), and said blade handle (32) is connected with said buffer rail (11) through second bearing pin (38) that inserts in the said slotted hole (37).
5. the tangential swirl air inlet mechanism that is used for coal burner according to claim 2; It is characterized in that; Said driven unit (14) comprise gear (17) and with the intermeshing gear ring of said gear (17) (18); Said gear ring (18) is arranged on the inner surface of said buffer rail (11), and the center of said gear (17) is connected with axle (19), and this axle (19) passes said end plate (13) and stretches out.
6. the tangential swirl air inlet mechanism that is used for coal burner according to claim 5 is characterized in that, is connected with handle (20) on the said axle (19).
7. the tangential swirl air inlet mechanism that is used for coal burner according to claim 6 is characterized in that, said end plate (13) is gone up and the corresponding position of end (39) of said handle (20) is provided with scale.
8. the tangential swirl air inlet mechanism that is used for coal burner according to claim 2 is characterized in that, is provided with water-cooled interlayer (21) in the said end plate (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202209592U CN202561738U (en) | 2012-05-16 | 2012-05-16 | Tangential cyclone air inlet mechanism for pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202209592U CN202561738U (en) | 2012-05-16 | 2012-05-16 | Tangential cyclone air inlet mechanism for pulverized coal burner |
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| Publication Number | Publication Date |
|---|---|
| CN202561738U true CN202561738U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202209592U Expired - Lifetime CN202561738U (en) | 2012-05-16 | 2012-05-16 | Tangential cyclone air inlet mechanism for pulverized coal burner |
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| CN (1) | CN202561738U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605565A (en) * | 2016-01-18 | 2016-05-25 | 华北电力科学研究院有限责任公司 | Method for adjusting optimal angle of radial swirl blades in swirl burner |
| CN107166381A (en) * | 2017-06-28 | 2017-09-15 | 河南科技大学 | A kind of tangential movable nozzle turbulent burner |
| CN110715321A (en) * | 2019-09-29 | 2020-01-21 | 中国航发沈阳发动机研究所 | Swirler with adjustable throat area |
| CN111059535A (en) * | 2019-12-31 | 2020-04-24 | 三一汽车制造有限公司 | Flame stabilizing disc and burner |
| CN111795381A (en) * | 2020-07-23 | 2020-10-20 | 郑州轻工业大学 | Cyclone with adjustable swirl vanes for pulverized coal burner |
-
2012
- 2012-05-16 CN CN2012202209592U patent/CN202561738U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605565A (en) * | 2016-01-18 | 2016-05-25 | 华北电力科学研究院有限责任公司 | Method for adjusting optimal angle of radial swirl blades in swirl burner |
| CN107166381A (en) * | 2017-06-28 | 2017-09-15 | 河南科技大学 | A kind of tangential movable nozzle turbulent burner |
| CN110715321A (en) * | 2019-09-29 | 2020-01-21 | 中国航发沈阳发动机研究所 | Swirler with adjustable throat area |
| CN111059535A (en) * | 2019-12-31 | 2020-04-24 | 三一汽车制造有限公司 | Flame stabilizing disc and burner |
| CN111059535B (en) * | 2019-12-31 | 2022-03-25 | 三一汽车制造有限公司 | Flame stabilizing disc and burner |
| CN111795381A (en) * | 2020-07-23 | 2020-10-20 | 郑州轻工业大学 | Cyclone with adjustable swirl vanes for pulverized coal burner |
| CN111795381B (en) * | 2020-07-23 | 2022-07-19 | 郑州轻工业大学 | Cyclone with adjustable swirl vanes for pulverized coal burner |
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Granted publication date: 20121128 |
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| CX01 | Expiry of patent term |