CN103343962A - Rick type pulsating combustor with revolving bed - Google Patents
Rick type pulsating combustor with revolving bed Download PDFInfo
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- CN103343962A CN103343962A CN2013102193076A CN201310219307A CN103343962A CN 103343962 A CN103343962 A CN 103343962A CN 2013102193076 A CN2013102193076 A CN 2013102193076A CN 201310219307 A CN201310219307 A CN 201310219307A CN 103343962 A CN103343962 A CN 103343962A
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- revolving bed
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Abstract
The invention belongs to the field of pulsating combustion devices and particularly relates to a rick type pulsating combustor with a revolving bed. The rick type pulsating combustor with the revolving bed is characterized by being composed of a pulsating combustion system, a variable frequency motor reducer and a feeder. The pulsating combustion system is composed of a dust hopper, a gas inlet base, the revolving bed, a combustion chamber, a tail pipe, a fuel gas ignition ring and a high-voltage discharge ignition needle. The combustion chamber is fixedly installed above the gas inlet base, the revolving bed rotates in a concentric mode and is installed on the gas inlet base and the tail pipe is fixedly installed on the upper portion of the combustion chamber, the dust hopper is placed below the gas inlet base, the fuel gas ignition ring and the high-voltage discharge ignition needle are fixedly installed on the gas inlet base, the feeder is fixedly installed on the upper portion of the outer side of the combustion chamber, and the variable frequency motor reducer is fixedly installed on the lower portion of the outer side of the combustion chamber and connected with the revolving bed in a transmission mode. The rick type pulsating combustor with the revolving bed is scientific and reasonable in structural design, has the advantages of being large in combustion diameter, large in power, high in practicability, even in sprinkle of solid fuel, stable in pulsating combustion and small in pollution, and has higher innovativeness.
Description
Technical field
The invention belongs to the pulse combustion device field, particularly a kind of Rieke type pulsating combusting device with revolving bed.
Background technology
Intermittent combustion is a kind of a kind of combustion system between continuous burning and explosive combustion, is the self-oscillation combustion phenomena that occurs under certain burner structure form.Compare with the continuous burning process, pulsating combusting device combustion intensity, heat transference efficiency and overall thermal efficient height, pollutant emission is low.According to burner acoustic construction form difference, pulsating combusting device is divided into Schmidt (Schmidt) type, and Helmholtz (Hull nurse thatch) type restrains in the Rijke() three kinds of forms of type.Wherein, type is applicable to gaseous fuel to Helmholtz (Hull nurse thatch), and three kinds of fuel of Rieke type pulsating combusting device incendivity solid, liquid, gas.
The foreign scholar at first is applied in the Rieke type pulsating combusting device on coal and the combustion of wood, subsequently fuel range is expanded to ethanol, charcoal, peat and fruit residue etc.For example, people such as foreign scholar Carvalho JA relatively under intermittent combustion and non-intermittent combustion situation the combustion case of fine coal point out that under the intermittent combustion situation, pulverized coal friring efficient has improved 20%.Ferreira MA and Carvalho JA find fine coal in Rieke type pulsating combusting device internal combustion, and Maximum Energy Release Rate can reach 1.7MW/m2, and excess air coefficient is 10% o'clock, and fine coal can reach 95% efficiency of combustion.People such as domestic scholars clock hero utilize two ends to close up increases the way of sound energy reflection, has successfully overcome the difficult problem of little draw ratio Rieke type self-pulsating.And designed a kind of hot acoustical coupling formula pulse boiler (Chinese patent CN98232007.8) of suitable gas-liquid solid fuel accordingly, the 0.5t/h vertical oil burning boiler suitable with conventional volume and profile compared, its combustion intensity has improved 2 times, reaches 4.4MW/m3, and its heat transfer efficiency has improved 30%.Existing application case shows, intermittent combustion is a kind of advanced combustion system of energy-efficient, environmental protection.
The Rieke type pulsating combusting device that present Chinese scholars is developed mostly is a kind of certain draw ratio (L/D=5～30) that has, and hollow cylinder body structure, fuel bed are fixed on a certain specific position in combustion chamber (being typically burner length L/4 places).Bed is generally the metallic plate of woven wire or open pore.When buring solid fuel such as fine coal, fuel is from burning bed upper end, and cylindrical combustion chamber wall one side opening place is imported by feed mechanism (as auger conveyor).The combustion chamber diameter hour (＜300mm) time, shedding with pulsed gas fuel vibration effect because fuel drops in the process, fuel can more evenly be paved with bed.In this case, the fuel combustion of bed each point and HRR are more or less the same, the intermittent combustion good stability.
Yet when the Rieke type pulsating combusting device being amplified design, for example, the combustion chamber diameter is greater than 600mm.At this moment.Because the combustion chamber diameter is big, fuel the shedding with pulsed gas in the process of dropping is not enough to make fuel to be paved with whole bed to fuel vibration effect in good time.Fuel will be on bed, and the small region of charging aperture below is piled up, and causes the fuel combustion of bed each point and HRR inhomogeneous, and then causes the intermittent combustion instability, even can not excite the intermittent combustion phenomenon.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the Rieke type pulsating combusting device of the band revolving bed that a kind of combustion chamber diameter is big, solid fuel is shed evenly, intermittent combustion stable, the thermal efficiency is high, contaminative is little is provided.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of Rieke type pulsating combusting device with revolving bed, it is characterized in that: by the intermittent combustion system, the variable-frequency motor decelerator, feeder is formed, described intermittent combustion system is by flue-dust retainer, the air inlet base, revolving bed, the combustion chamber, tail pipe, the gas ignition circle, electrion igniting pin is formed, the combustion chamber is installed in air inlet base top, revolving bed rotates with one heart and is installed on the air inlet base, tail pipe is installed in top, combustion chamber, flue-dust retainer is placed in air inlet base below, gas ignition circle and electrion igniting pin all are installed on the air inlet base, feeder is installed in the combustion chamber outer upper, and the variable-frequency motor decelerator is installed in the combustion chamber outer lower portion and is in transmission connection with revolving bed.
And described air inlet base is made up of substrate, conical shell, air inlet pipe, and conical shell, air inlet pipe are installed in below the substrate successively.
And, described revolving bed is made up of bogie wheel, centering wheel, revolving burner grate, stirring-up rake, bogie wheel, centering wheel all are installed on the air inlet base substrate, the rotation of revolving burner grate being installed in the middle of the wheel of feeling relieved on the bogie wheel and being positioned at the bottom, combustion chamber, and stirring-up rake is installed in the combustion chamber lower inside and is positioned at revolving burner grate top.
And described revolving burner grate is a circular refractory steel plates grate, and its upper and lower faces is shaped on the fire grate water seal sleeve under the water seal sleeve and fire grate respectively, can cooperate the formation sealing structure for water respectively with combustion chamber water seal sleeve, air inlet base water seal sleeve.
And described revolving burner grate is a circular refractory steel plates grate, and its upper and lower faces all is shaped on the water seal sleeve, its outer rim be fixed with annular gear ring and with the engagement of the power output gear of variable-frequency motor decelerator.
And described bogie wheel is the circle-shaped one group of bogie wheel that is distributed in air inlet base substrate upper surface.
And described centering wheel is the circle-shaped one group of centering wheel that is distributed in air inlet base substrate upper surface.
And described combustion chamber is a cylindric burner hearth, is lined with fire brick layer in it, and its middle part is shaped on ear formula bearing, its on the lower portion be shaped on window.
And described ear formula bearing is three, is distributed in the combustion chamber periphery.
Advantage of the present invention and good effect are:
1. combustion chamber of the present invention diameter is big, and internal diameter reaches 500mm, and power is big, and practicality is stronger;
2. the present invention is provided with revolving bed, and solid fuel is shed evenly;
3. the present invention is because fuel is shed evenly, and intermittent combustion is more stable;
4. flameholding of the present invention, the content of Air thing is starkly lower than common continuous burning in the tail gas, and the CO discharging reduces by 50%, NO
XDischarging reduces by 70%.
5. scientific structure design of the present invention is reasonable, have that the combustion chamber diameter is big, power is big, practical, solid fuel is shed evenly, intermittent combustion stable, pollute advantages such as little, is a kind of Rieke type pulsating combusting device that has than the band revolving bed of high innovation character.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the B portion enlarged drawing of Fig. 1;
Fig. 4 is the C portion enlarged drawing of Fig. 1;
Fig. 5 is the D portion enlarged drawing of Fig. 2.
Description of reference numerals
The 1-tail pipe, 2-window, 3-stirring-up rake, the 4-feeder, 5-revolving burner grate, 6-annular gear ring, 7-variable-frequency motor decelerator, the 8-wheel of feeling relieved, the 9-substrate, 10-electrion igniting pin, 11-conical shell, 12-flue-dust retainer, the 13-air inlet pipe, 14-gas ignition circle, 15-bogie wheel, 16-ear formula bearing, water seal sleeve under water seal sleeve, 19-combustion chamber water seal sleeve, 20-air inlet base water seal sleeve, the 21-fire grate on 17-combustion chamber, the 18-fire grate.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described by specific embodiment.Following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of Rieke type pulsating combusting device with revolving bed, by the intermittent combustion system, variable-frequency motor decelerator 7, feeder 4 is formed, described intermittent combustion system is by flue-dust retainer 12, the air inlet base, revolving bed, combustion chamber 17, tail pipe 1, gas ignition circle 14, electrion igniting pin 10 is formed, the combustion chamber is installed in air inlet base top, revolving bed rotates with one heart and is installed on the air inlet base, tail pipe is installed in top, combustion chamber, flue-dust retainer is placed in air inlet base below, gas ignition circle and electrion igniting pin all are installed on the air inlet base, feeder is installed in the combustion chamber outer upper, and the variable-frequency motor decelerator is installed in the combustion chamber outer lower portion and is in transmission connection with revolving bed.
The air inlet base is made up of substrate 9, conical shell 11, air inlet pipe 13, and conical shell, air inlet pipe are installed in below the substrate successively.
Revolving bed is made up of bogie wheel 15, centering wheel 8, revolving burner grate 5, stirring-up rake 3, bogie wheel, centering wheel all are installed on the air inlet base substrate, the rotation of revolving burner grate being installed in the middle of the wheel of feeling relieved on the bogie wheel and being positioned at the bottom, combustion chamber, and stirring-up rake is installed in the combustion chamber lower inside and is positioned at revolving burner grate top.
The revolving burner grate is a circular refractory steel plates grate, its upper and lower faces is shaped on the fire grate water seal sleeve 21 under the water seal sleeve 18 and fire grate respectively, can cooperate with combustion chamber water seal sleeve 19, air inlet base water seal sleeve 20 respectively and form sealing structure for water, can water filling between the water seal sleeve, form water seal, prevent that flue gas is excessive.Revolving burner grate, its outer rim be fixed with annular gear ring 6 and with the engagement of the power output gear of variable-frequency motor decelerator.
Bogie wheel is four, is the circle-shaped air inlet base substrate upper surface that is distributed in, and is used for supporting revolving burner grate.The centering wheel is three, is the circle-shaped air inlet base substrate upper surface that is distributed in, and is used for revolving burner grate location.
The combustion chamber is a cylindric burner hearth, is lined with fire brick layer in it, and its outer lower portion is shaped on the water seal sleeve, and its middle part is shaped on ear formula bearing 16, its on the lower portion be shaped on window 2.Ear formula bearing is three, is distributed in the combustion chamber periphery, is used for installing and fixing the combustion chamber.
In the present embodiment, the Rieke type pulsating combusting device whole height height 4000mm of band revolving bed, combustion chamber external diameter 800mm, internal diameter 500mm.Compare with traditional sludge incineration device, this device has combustion intensity can reach more than 3 times of ordinary combustion, and the CO discharging reduces by 50%, NO
XDischarging reduces by 70%.
The operation principle of the Rieke type pulsating combusting device of this band revolving bed is:
The operation principle of the Rieke type pulsating combusting device of band revolving bed of the present invention is: before the igniting, fill with water in the sealing groove that the upper and lower hydraulic gland tube of revolving burner grate forms, start variable-frequency motor, adjust motor speed fire grate is rotated with the speed of 3-5r/min.Fuel is sent into the combustion chamber by feeder and is fallen within on the fire grate during work; Fire grate rotates under the drive of variable-frequency motor decelerator simultaneously---and the fire grate one of rotation is to avoid solid fuel to be shed on same point, the 2nd and be fixed in stirring-up rake acting in conjunction in the burner hearth and make the fuel bed tiling evenly, avoid below charging aperture, piling up; Simultaneously, the gas ignition circle is opened, and combustion gas is lighted in the sparking of electrion igniting needle-discharging, and the fuel of shedding on fire grate is burned combustion gas ignition combustion and the intermittent combustion that excites the Rieke type pulsating combusting device; Lime-ash then falls in the flue-dust retainer by fire grate in the stirring-up rake stirring.The Rieke type pulsating combusting device of this band revolving bed is because the combustion chamber diameter is big, and is so power is powerful, practical.
Claims (9)
1. Rieke type pulsating combusting device with revolving bed, it is characterized in that: by the intermittent combustion system, the variable-frequency motor decelerator, feeder is formed, described intermittent combustion system is by flue-dust retainer, the air inlet base, revolving bed, the combustion chamber, tail pipe, the gas ignition circle, electrion igniting pin is formed, the combustion chamber is installed in air inlet base top, revolving bed rotates with one heart and is installed on the air inlet base, tail pipe is installed in top, combustion chamber, flue-dust retainer is placed in air inlet base below, gas ignition circle and electrion igniting pin all are installed on the air inlet base, feeder is installed in the combustion chamber outer upper, and the variable-frequency motor decelerator is installed in the combustion chamber outer lower portion and is in transmission connection with revolving bed.
2. the Rieke type pulsating combusting device of band revolving bed according to claim 1, it is characterized in that: described air inlet base is made up of substrate, conical shell, air inlet pipe, and conical shell, air inlet pipe are installed in below the substrate successively.
3. the Rieke type pulsating combusting device of band revolving bed according to claim 1, it is characterized in that: described revolving bed is made up of bogie wheel, centering wheel, revolving burner grate, stirring-up rake, bogie wheel, centering wheel all are installed on the air inlet base substrate, the rotation of revolving burner grate being installed in the middle of the wheel of feeling relieved on the bogie wheel and being positioned at the bottom, combustion chamber, and stirring-up rake is installed in the combustion chamber lower inside and is positioned at revolving burner grate top.
4. the Rieke type pulsating combusting device of band revolving bed according to claim 3, it is characterized in that: described revolving burner grate is a circular refractory steel plates grate, its upper and lower faces is shaped on the fire grate water seal sleeve under the water seal sleeve and fire grate respectively, can cooperate the formation sealing structure for water respectively with combustion chamber water seal sleeve, air inlet base water seal sleeve.
5. the Rieke type pulsating combusting device of band revolving bed according to claim 3, it is characterized in that: described revolving burner grate is a circular refractory steel plates grate, its upper and lower faces all is shaped on the water seal sleeve, its outer rim be fixed with annular gear ring and with the engagement of the power output gear of variable-frequency motor decelerator.
6. the Rieke type pulsating combusting device of band revolving bed according to claim 3, it is characterized in that: described bogie wheel is the circle-shaped one group of bogie wheel that is distributed in air inlet base substrate upper surface.
7. the Rieke type pulsating combusting device of band revolving bed according to claim 3 is characterized in that: described centering wheel is the circle-shaped one group of centering wheel that is distributed in air inlet base substrate upper surface.
8. the Rieke type pulsating combusting device of band revolving bed according to claim 1, it is characterized in that: described combustion chamber is a cylindric burner hearth, is lined with fire brick layer in it, its middle part is shaped on ear formula bearing, its on the lower portion be shaped on window.
9. the Rieke type pulsating combusting device of band revolving bed according to claim 8, it is characterized in that: described ear formula bearing is three, is distributed in the combustion chamber periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219307.6A CN103343962B (en) | 2013-06-04 | 2013-06-04 | A kind of Rieke type pulsating combusting device of band revolving bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219307.6A CN103343962B (en) | 2013-06-04 | 2013-06-04 | A kind of Rieke type pulsating combusting device of band revolving bed |
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| Publication Number | Publication Date |
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| CN103343962A true CN103343962A (en) | 2013-10-09 |
| CN103343962B CN103343962B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310219307.6A Active CN103343962B (en) | 2013-06-04 | 2013-06-04 | A kind of Rieke type pulsating combusting device of band revolving bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949122A (en) * | 2015-06-12 | 2015-09-30 | 贵州盘江煤层气开发利用有限责任公司 | Oxygen-enriched gas pulsating combustion device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529377A (en) * | 1983-02-28 | 1985-07-16 | Georgia Tech Research Institute | Pulse combustor apparatus |
| US5176513A (en) * | 1990-12-04 | 1993-01-05 | Georgia Tech Research Corporation | Pulse combustor apparatus |
| CN1144897A (en) * | 1995-04-01 | 1997-03-12 | 浙江工业大学 | Variable section Rieke type acoustic vibration burner |
| CN1908516A (en) * | 2006-08-18 | 2007-02-07 | 浙江工业大学 | Design method of a valveless self-actuated pulse combustion type kiln and kiln thereof |
| CN203336577U (en) * | 2013-06-04 | 2013-12-11 | 天津科技大学 | Rick type pulse combustion device with rotating bed |
-
2013
- 2013-06-04 CN CN201310219307.6A patent/CN103343962B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529377A (en) * | 1983-02-28 | 1985-07-16 | Georgia Tech Research Institute | Pulse combustor apparatus |
| US5176513A (en) * | 1990-12-04 | 1993-01-05 | Georgia Tech Research Corporation | Pulse combustor apparatus |
| CN1144897A (en) * | 1995-04-01 | 1997-03-12 | 浙江工业大学 | Variable section Rieke type acoustic vibration burner |
| CN1908516A (en) * | 2006-08-18 | 2007-02-07 | 浙江工业大学 | Design method of a valveless self-actuated pulse combustion type kiln and kiln thereof |
| CN203336577U (en) * | 2013-06-04 | 2013-12-11 | 天津科技大学 | Rick type pulse combustion device with rotating bed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949122A (en) * | 2015-06-12 | 2015-09-30 | 贵州盘江煤层气开发利用有限责任公司 | Oxygen-enriched gas pulsating combustion device |
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| CN103343962B (en) | 2016-08-10 |
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