CN202647747U - Spiral curved surface for burner and burner with same - Google Patents
Spiral curved surface for burner and burner with same Download PDFInfo
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- CN202647747U CN202647747U CN 201220267701 CN201220267701U CN202647747U CN 202647747 U CN202647747 U CN 202647747U CN 201220267701 CN201220267701 CN 201220267701 CN 201220267701 U CN201220267701 U CN 201220267701U CN 202647747 U CN202647747 U CN 202647747U
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Abstract
The utility model provides a spiral curved surface for a burner. The spiral curved surface is characterized in that the spiral curved surface has the cross section trace shape that a moving point does straight reciprocating movement along a bus on the circular conical surface, meanwhile, the bus does circular reciprocating movement along an axial line of the circular conical surface, and the projection shape of the moving track of the moving point on the circular conical surface on the circular conical bottom surface is the cross section trace shape. The spiral curved surface is adopted for grading primary wind pulverized coal air flows, a plasma generator or a micro oil quantity ignition device is utilized for igniting one part of pulverized coal, a stable igniting source with higher heat power is formed inside the burner, and the other pulverized coal air flows are then ignited. The spiral curved surface has the advantages that the structure is simple, the operation is convenient, and the performance is excellent.
Description
Technical field
The utility model relates to the spiral camber that a kind of burner uses and the burner with this spiral camber, belongs to the thermal boiler technical field.
Background technology
The mode that traditional station boiler igniting is generally adopted is grease gun igniting.Put first oil combustion gun during boiler ignition start, oil behind the burning certain hour is heated to burner hearth the ignition temperature of breeze airflow in burner hearth, and be blown into burner hearth with coal dust and carry out oily coal multifuel combustion this moment.When boiler reaches more than 50% load, when breeze airflow can smooth combustion, fuel oil is excised gradually, finish the boiler ignition start process.In order to save cost, reduce the fuel oil consumption of station boiler, lot of domestic and international company has developed multiple plasma oil-free ignition combustor and little oil ignition burner, and is widely used at a lot of station boilers.
Plasma oil-free ignition combustor and little oil ignition burner all are a kind of internally fired devices, come direct firing coal-dust airflow by the high-temperature plasma of plasma generator ejection and the rear high-temperature flue gas that produces of atomized fuel burning of little oil mass ignition device ejection as incendiary source respectively.Owing to the lower-powered reason of plasma generator and the purpose of little oil mass ignition device fuel-economizing, existing plasma oil-free ignition combustor and little oil ignition burner all are designed to the burner of fractional combustion, namely in burner, light the part coal dust by two kinds of above-mentioned extraneous incendiary sources, form new, the large incendiary source of thermal power, remove again to light other a part of coal dust, form another larger incendiary source, finally adopt the mode of this " multistep ignition, step by step amplification ", light whole wind breeze airflows of main burner.So it is good and bad breeze airflow to be carried out the design of the mechanism of classification or structure in the burner, directly light the success or not of a wind breeze airflow for above-mentioned extraneous incendiary source very crucial.
The spiral camber that a kind of burner of the present utility model is used, improve and optimize for the mechanism of the breeze airflow classification of burner inside or structure, provide the enough less ignition energies of a kind of energy to go to light the method for relatively endless large breeze airflow, and the method is wide to the accommodation of coal, wind speed, wind-warm syndrome, has improved the success rate of plasma non-oil ignition and little oil mass ignition and the effect of smooth combustion.
Summary of the invention
The purpose of this utility model is to provide the spiral camber that a kind of burner uses and the burner with this spiral camber, adopt spiral camber that a wind breeze airflow is carried out classification, utilize plasma generator or little oil mass ignition device to light first a part of coal dust, stable in the inner formation of burner, the incendiary source that thermal power is larger removes to light other breeze airflow again.Spiral camber has simple in structure, and is easy to operate, the advantage of excellent performance.
In order to achieve the above object, the utility model adopts following technical solution to be achieved: the spiral camber that a kind of burner is used, it is characterized in that, its cross section trace shape is: a moving point is done straight reciprocating motion along a bus on the taper seat, this bus is done the circumference reciprocating motion around the axis of taper seat simultaneously, and then moving point is in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface.
Preferably, described cross section trace shape satisfies involute equation, fermat spiral equation or the lituus equation (Lituus helical equation) of Archimedes spiral equation, logatithmic spiral equation, circle.
Preferably, described cross section trace shape also is simultaneously: in polar coordinate system in the plane, and utmost point footpath ρ proportional increase or proportional minimizing with the minimizing of polar angle θ with the increase of polar angle θ of a moving point, so formed trace shape of moving point.
The utility model also provides a kind of burner, it is characterized in that, comprises burner body, is provided with the spiral camber that at least one above-mentioned burner is used in the described burner body.
Facing on the direction of burner outlet, spiral camber can be right handed, also can be counterclockwise rotation.
Facing on the direction of burner outlet, spiral camber can be to expand outwardly gradually rotation, also can be inwardly to shrink gradually rotation.
Preferably, when the number of spiral camber greater than 1 the time, spiral camber is mutually nested, is installed in the burner body.
Preferably, the central lines of the axis of described spiral camber and burner body.
Preferably, the number of described spiral camber is 1 or 2.
Preferably, described spiral camber is formed around axis rotation 1 circle by bus at least.
More preferably, described spiral camber is formed around axis rotation 1 circle, 2 circles or 3 circles by bus.
As shown in Figure 4, be the profile schematic diagram of spiral camber, as shown in Figure 6, be the cross section cross-sectional schematic (to clockwise turn to example towards paper) of spiral camber, described spiral camber can be with breeze airflow classification (or approximate classification).As shown in Figure 5, the incendiary source that the external world provides axially inserts the space that the spiral camber innermost layer surrounds, the breeze airflow that enters this space is lighted, and in spiral camber inside or end outlet form incendiary source new, stable, that thermal power is larger, utilize this incendiary source to light breeze airflow between innermost layer and the second layer, and " multistep ignition, amplify step by step " light whole breeze airflows.When burner used as start-up burner, spiral camber pushed burner, and the breeze airflow in the burner is carried out classification, and the incendiary source that the external world provides adopts " step by step igniting, classification are amplified " mode firing coal-dust airflow; When treating that this burner uses as main burner, remove extraneous incendiary source, spiral camber can continue also can extract burner out to the breeze airflow classification, breeze airflow is not carried out classification.
The utility model has the advantages that:
The utility model passes through the coal powder grading machine structure of burner inside or improvement and the optimization of structure, provide the enough less ignition energies of a kind of energy to go to light the method for relatively endless large breeze airflow, because the utility model adopts the multistep ignition mode, the spiral camber of a rotation N circle (digital N 〉=1) is divided into breeze airflow (containing approximate being divided into) N+1 level.Be after pulverized coal borne air flow enters burner, what of total powder amount no matter, the powder amount that enters the spiral camber innermost circle is certain, can determine the size of innermost circle according to the ignition ability of extraneous incendiary source and the igniting complexity of using coal, assurance enters the coal dust of innermost circle and can be lighted and smooth combustion by incendiary source, remove to light coal dust between innermost circle and the second circle with the innermost circle flame of smooth combustion, light step by step successively again i circle and i+1 and enclose (the coal dust between the digital i＜N), until the coal dust between spiral camber and the burner, thereby realize using the incendiary source than point fire power to light relatively endless large coal dust.
2, the utility model concept is distinct, and is simple in structure, reasonable in design, and investment and operating cost are moderate, and cost performance is high.
3, the utility model has provided the trace shape of preferred and preferred spiral camber, and the number of preferred spiral camber rotating cycle and spiral camber, for manufacturing and the use of spiral camber are provided convenience.
Description of drawings
Fig. 1 is the gradual combustor schematic diagram that is furnished with spiral camber;
Fig. 2 is furnished with the gradual combustor A of 1 spiral camber to view;
Fig. 3 is furnished with the gradual combustor A of 2 spiral cambers to view;
Fig. 4 is the profile schematic diagram of spiral camber;
Fig. 5 is the axial cross-sectional schematic of spiral camber;
Fig. 6 is the cross section cross-sectional schematic (to clockwise turn to example towards paper) of spiral camber;
Fig. 7 is the spiral camber cross section cross-sectional schematic of upper and lower symmetric shape.
The specific embodiment
Specify the utility model below in conjunction with example.
Embodiment 1:
As shown in Figure 1, for being furnished with the gradual combustor schematic diagram of spiral camber, described gradual combustor comprises burner body 2, is provided with the spiral camber 3 that a burner is used in the described burner body 2, spiral camber 3 and burner body 2 coaxial layouts.As shown in Figure 2, facing on the direction of burner outlet, spiral camber 3 is counterclockwise to rotate, and is to expand outwardly gradually rotation.The central lines of the axis of spiral camber 3 and burner body 2.Spiral camber 3 is formed around axis rotation 2 circles by bus.
The cross section trace shape of described spiral camber 3 is: a moving point is done straight reciprocating motion along a bus on the taper seat, this bus is done the circumference reciprocating motion around the axis of taper seat simultaneously, and then moving point is in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface.The cross section trace shape of described spiral camber 3 also is simultaneously: in polar coordinate system in the plane, and utmost point footpath ρ proportional increase or proportional minimizing with the minimizing of polar angle θ with the increase of polar angle θ of a moving point, so formed trace shape of moving point.
When ignition of the boiler, spiral camber 3 can be divided into breeze airflow three parts (or approximate three parts that are divided into).The incendiary source 1 that the external world provides axially inserts the space that spiral camber 3 innermost circles are surrounded, the breeze airflow that enters this space is lighted, and form incendiary source new, stable, that thermal power is larger at the end outlet place of spiral camber 3 innermost circles, utilize this incendiary source light innermost circle and second the circle between breeze airflow, and form new incendiary source, finally light whole breeze airflows.
Treat that ignition of the boiler is complete, when this burner uses as main burner, extract the incendiary source 1 that the external world provides out burner.Spiral camber 3 can continue the classification breeze airflow, also can extract together burner out with incendiary source 1.
Embodiment 2:
Be similar to embodiment 1, difference is: as shown in Figure 3, in the present embodiment, be furnished with two spiral cambers 3 in the burner body 2, each spiral camber 3 is formed around axis rotation 2 circles by bus, and spiral camber 3 is mutually nested, is installed in the burner body 2.On the direction in the face of burner body 2 outlets, spiral camber 3 counterclockwise expands outwardly rotation gradually.
Be similar to embodiment 1, difference is, as shown in Figure 7, in the present embodiment, be furnished with a slice spiral camber 3 in the burner body 2, its cross section trace shape is: a moving point is done straight reciprocating motion along a bus on the taper seat, and this bus is done the circumference reciprocating motion around the axis of taper seat simultaneously, and then moving point is in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface.But facing on the direction of burner outlet, spiral camber 3 is laterally zygomorphic structures.The axis of while spiral camber 3 and the central lines of burner body 2.
When ignition of the boiler, spiral camber 3 can be divided into breeze airflow five parts (or approximate five parts that are divided into).The incendiary source 1 that the external world provides axially inserts the space that spiral camber 3 innermost circles are surrounded, the breeze airflow that enters this space is lighted, and form incendiary source new, stable, that thermal power is larger at the end outlet place of spiral camber 3 innermost circles, and utilize this incendiary source step by step light all the other breeze airflows.
Embodiment 4
Be similar to embodiment 1, difference is, in the present embodiment, be furnished with a slice spiral camber 3 in the burner body 2, its cross section trace shape is that a moving point is done straight reciprocating motion along a bus on the taper seat, this bus is done the circumference reciprocating motion around the axis of taper seat simultaneously, and then moving point is in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface.And its cross section trace shape satisfies Archimedes spiral equation ρ under the polar coordinate system=50 θ (2 π≤θ≤6 π, ρ are utmost point footpath, and θ is polar angle).According to given equation, can easily produce this spiral camber.
When ignition of the boiler, spiral camber 3 can be divided into breeze airflow three parts (or approximate three parts that are divided into).The incendiary source 1 that the external world provides axially inserts the space that spiral camber 3 innermost circles are surrounded, the breeze airflow that enters this space is lighted, and form incendiary source new, stable, that thermal power is larger at the end outlet place of spiral camber 3 innermost circles, utilize this incendiary source light innermost circle and second the circle between breeze airflow, and form new incendiary source, finally light whole breeze airflows.
Embodiment 5
Be similar to embodiment 1, difference is, in the present embodiment, be furnished with a slice spiral camber 3 in the burner body 2, its cross section trace shape is that a moving point is done straight reciprocating motion along a bus on the taper seat, this bus is done the circumference reciprocating motion around the axis of taper seat simultaneously, then move point in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface, and its cross section trace shape satisfies the logatithmic spiral equation ρ=50e under the polar coordinate system
θ(0≤θ≤2 π, ρ are utmost point footpath, and θ is polar angle).According to given equation, can easily produce this spiral camber.
When ignition of the boiler, spiral camber 3 can be divided into breeze airflow two parts (or the approximate two parts that are divided into).The incendiary source 1 that the external world provides axially inserts the space that spiral camber 3 innermost circles are surrounded, the breeze airflow that enters this space is lighted, and form incendiary source new, stable, that thermal power is larger at the end outlet place of spiral camber 3 innermost circles, utilize this incendiary source to light remaining breeze airflow.
Embodiment 6
Be similar to embodiment 1, difference is, in the present embodiment, be furnished with a slice spiral camber 3 in the burner body 2, its cross section trace shape is that a moving point is done straight reciprocating motion along a bus on the taper seat, this bus circle is done the circumference reciprocating motion around the axis of taper seat simultaneously, then move point in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface, and its cross section trace shape satisfies the involute parametric equation of the circle under the plane right-angle coordinate
(0≤θ≤2 π, x for moving some P in the axial projection coordinate of x, y for moving some P in the axial projection coordinate of y, the origin of coordinates is O, θ is the angle of line segment OP and x axle positive direction, line segment OP is rotated counterclockwise as just).According to the given parameters equation, can easily produce this spiral camber.
When ignition of the boiler, spiral camber 3 can be divided into breeze airflow two parts (or the approximate two parts that are divided into).The incendiary source 1 that the external world provides axially inserts the space that spiral camber 3 innermost circles are surrounded, the breeze airflow that enters this space is lighted, and form incendiary source new, stable, that thermal power is larger at the end outlet place of spiral camber 3 innermost circles, utilize this incendiary source to light remaining breeze airflow.
Embodiment 7
Be similar to embodiment 1, difference is, in the present embodiment, be furnished with a slice spiral camber 3 in the burner body 2, its cross section trace shape is that a moving point is done straight reciprocating motion along a bus on the taper seat, this bus is done the circumference reciprocating motion around the axis of taper seat simultaneously, then move point in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface, and its cross section trace shape satisfies the fermat spiral equation ρ under the polar coordinate system
2=θ (π≤θ≤5 π, ρ are utmost point footpath, and θ is polar angle).According to given equation, can easily produce this spiral camber.
When ignition of the boiler, spiral camber 3 can be divided into breeze airflow three parts (or approximate three parts that are divided into).The incendiary source 1 that the external world provides axially inserts the space that spiral camber 3 innermost circles are surrounded, the breeze airflow that enters this space is lighted, and form incendiary source new, stable, that thermal power is larger at the end outlet place of spiral camber 3 innermost circles, utilize this incendiary source light innermost circle and second the circle between breeze airflow, and form new incendiary source, finally light whole breeze airflows.
Embodiment 8
Be similar to embodiment 1, difference is, in the present embodiment, be furnished with a slice spiral camber 3 in the burner body 2, its cross section trace shape is that a moving point is done straight reciprocating motion along a bus on the taper seat, this bus circle is done the circumference reciprocating motion around the axis of taper seat simultaneously, then move point in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface, and its cross section trace shape satisfies the lituus equation ρ under the polar coordinate system
2θ=10
5(
ρ is utmost point footpath, and θ is polar angle).According to given equation, can easily produce this spiral camber.
When ignition of the boiler, spiral camber 3 can be divided into breeze airflow three parts (or approximate three parts that are divided into).The incendiary source 1 that the external world provides axially inserts the space that spiral camber 3 innermost circles are surrounded, the breeze airflow that enters this space is lighted, and form incendiary source new, stable, that thermal power is larger at the end outlet place of spiral camber 3 innermost circles, utilize this incendiary source light innermost circle and second the circle between breeze airflow, and form new incendiary source, finally light whole breeze airflows.
Claims (9)
1. spiral camber that burner is used, it is characterized in that, its cross section trace shape is: a moving point is done straight reciprocating motion along a bus on the taper seat, this bus is done the circumference reciprocating motion around the axis of taper seat simultaneously, and then moving point is in the projection of shape of the movement locus on the taper seat on the circular cone bottom surface.
2. the spiral camber used of burner as claimed in claim 1 is characterized in that, described cross section trace shape satisfies involute equation, fermat spiral equation or the lituus equation of Archimedes spiral equation, logatithmic spiral equation, circle.
3. the spiral camber used of burner as claimed in claim 1, it is characterized in that, described cross section trace shape also is simultaneously: in polar coordinate system in the plane, utmost point footpath ρ proportional increase or proportional minimizing with the minimizing of polar angle θ with the increase of polar angle θ of 1 moving point, so formed trace shape of moving point.
4. a burner is characterized in that, comprises burner body (2), is provided with the spiral camber (3) that each described burner is used among at least one claim 1-3 in the described burner body (2).
5. burner as claimed in claim 4 is characterized in that, when the number of spiral camber (3) greater than 1 the time, spiral camber is mutually nested, is installed in the burner body (2).
6. burner as claimed in claim 4 is characterized in that, the central lines of the axis of described spiral camber (3) and burner body (2).
7. burner as claimed in claim 4 is characterized in that, the number of described spiral camber (3) is 1 or 2.
8. burner as claimed in claim 4 is characterized in that, described spiral camber (3) is formed around axis rotation 1 circle by bus at least.
9. burner as claimed in claim 4 is characterized in that, described spiral camber (3) is formed around axis rotation 1 circle, 2 circles or 3 circles by bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267701 CN202647747U (en) | 2012-06-07 | 2012-06-07 | Spiral curved surface for burner and burner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267701 CN202647747U (en) | 2012-06-07 | 2012-06-07 | Spiral curved surface for burner and burner with same |
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| Publication Number | Publication Date |
|---|---|
| CN202647747U true CN202647747U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220267701 Expired - Lifetime CN202647747U (en) | 2012-06-07 | 2012-06-07 | Spiral curved surface for burner and burner with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296419A (en) * | 2019-07-06 | 2019-10-01 | 河南佰利联新材料有限公司 | A kind of thread mixing burner with high efficiency |
-
2012
- 2012-06-07 CN CN 201220267701 patent/CN202647747U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296419A (en) * | 2019-07-06 | 2019-10-01 | 河南佰利联新材料有限公司 | A kind of thread mixing burner with high efficiency |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |