CN208058844U - A kind of reciprocating multi-hole medium combustion device - Google Patents
A kind of reciprocating multi-hole medium combustion device Download PDFInfo
- Publication number
- CN208058844U CN208058844U CN201820364940.2U CN201820364940U CN208058844U CN 208058844 U CN208058844 U CN 208058844U CN 201820364940 U CN201820364940 U CN 201820364940U CN 208058844 U CN208058844 U CN 208058844U
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- China
- Prior art keywords
- heat
- burner
- combustion
- porous media
- hole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
A kind of reciprocating multi-hole medium combustion device, is related to a kind of combustion apparatus.Burner uses metal shell, generally symmetrical structure, is divided into heat-accumulating area and combustion zone.The porous media material of different size is filled in heat-accumulating area and combustion zone respectively.Meanwhile the porous media material of two kinds of different hole densities is radially filled in combustion zone, void density is larger on the outside, and void density is smaller in inside.By reversal valve, realize that fuel/air mixture periodically by burner, stablizes burning in burner.The utility model keeps burning more complete by the porous media of different size arranged symmetrically, solves the problems, such as that flame distribution is uneven, temperature gradient is steep and localized hyperthermia, with the poor Flammability limits of broadening, the advantages such as power regulating range is big, is not tempered, and pollutant discharge amount is low.
Description
Technical field
The utility model is related to a kind of burner, more particularly to a kind of reciprocating multi-hole medium combustion device belongs to burning and sets
Standby technical field.
Background technology
Heat conduction and radiance of traditional space combustion mode characterized by free flame due to gas are poor so that
Nearby temperature gradient is very steep for flame front, is unevenly distributed, and forms local high temperature zone, causes a large amount of heating power NOxIt generates, and burns
Stability is poor.For these problems, domestic and foreign scholars propose unidirectional multi-hole medium combustion mode, extend to a certain extent
Poor Flammability limits.And reciprocating multi-hole medium combustion technology circulates multi-hole medium combustion in terms of extending combustion limits than individual event
Advantageously so that ignition temperature is uniform, and pollutant discharge amount is low, and power regulating range is big.Therefore, reciprocating multi-hole medium fires
Burning technology has prodigious development space in practical application.
Currently, with reciprocating multi-hole medium combustion technology it is relevant be widely used it is general.Publication No. CN1740639A's
" reciprocating multi-hole medium combustion high-temperature air generating system and its method " realizes porous media mainly by periodic reverse
Burning is combined generation high temperature air with porous media accumulation of heat.But since its burning zone sectional area is smaller, it is unfavorable for flame and is formed
With stabilization, it is restricted in terms of extending the low heat value gas burning limit.Publication No. CN1848657A's is " more under reciprocal flowing
Hole medium super-thermal insulating burning method for generating electricity by utilizing temperature difference and its device " carries out thermo-electric generation using methane gas, but due in burner
Porous media it is single, burner operation range is small.Publication No. CN102937292A " the submergence flame of periodic reverse is porous
Medium burner ", the porous media of filling different size, different length in burner, and between porous media there are
Air section is burnt by periodic reverse in burner.But due to the presence of air section, keep temperature gradient larger, Temperature Distribution
Unevenness, incomplete combustion.
Invention content
The purpose of this utility model is to provide a kind of reciprocating multi-hole medium combustion devices, and the burner is by being symmetrical arranged
The porous media of different size keeps burning more complete, solves the problems, such as that flame distribution is uneven, temperature gradient is steep and localized hyperthermia,
With the poor Flammability limits of broadening, the advantages such as power regulating range is big, is not tempered, and pollutant discharge amount is low.
To achieve the goals above, the utility model is achieved through the following technical solutions：
A kind of reciprocating multi-hole medium combustion device, burner use metal shell, generally symmetrical structure, are divided into heat-accumulating area
The combustion zone and.Heat-accumulating area is pyramidal structure, and angle of inclination is 10-30 °, logical by increasing when gaseous fuel flows into heat-accumulating area
Flow area reduces flow velocity, achievees the purpose that anti-backfire；Combustion zone is cylindrical structure.Filling is advised respectively in heat-accumulating area and combustion zone
The different porous media material of lattice.The smaller porous media material of filling pore rate in heat-accumulating area, circulation is poor, can be by flame
It is positioned at combustion zone burning；Filling pore rate larger porous media material in combustion zone contributes to sustained combustion, improves burning temperature
Degree.Meanwhile in order to make uniformity of temperature profile, flame stabilization radially fills the more of two kinds of different aperture density in combustion zone
Hole dielectric material, void density is larger on the outside, and void density is smaller in inside.It is equipped at the central symmetry of burner
Electronic ignition device.
The heat-accumulating area is pyramidal structure, 10 ~ 30 ° of angle of inclination.
The porous media material of the heat-accumulating area, void density 50ppi, porosity 20%-30%, material are resistance to
High-temperature floamed ceramic.
The porous media material of the combustion zone, void density 10-35ppi, porosity 80%-90%, material
For high temperature resistant foamed ceramics.
Compared with prior art, the utility model has the advantage that and effect is：The heat-accumulating area of the utility model burner
Using pyramidal structure, when gaseous fuel flows into heat-accumulating area, flow area, which increases, reduces flow velocity, achievees the purpose that anti-backfire；And
When combustion product flows out heat-accumulating area, flow area, which reduces, increases flow velocity, and enhancing heat convection effect reduces exhaust gas temperature damage
It loses.Meanwhile different aperture density cellular dielectric material is radially filled in burner combustion area, in this way can be to avoid flame front near
Temperature gradient is steep, temperature distributing disproportionation, and the presence of local high temperature zone solves the problems, such as flame instability, keeps burning more abundant,
Poor Flammability limits has been widened, heating power NO is reducedxGeneration.
Description of the drawings
The utility model is further described below in conjunction with attached drawing.
Fig. 1 is a kind of overall diagram of reciprocating multi-hole medium combustion device.
In figure, 1, fuel/air mixture, 2, combustion product, 3, metal shell, 4, heat-accumulating area foamed ceramics, 5, burning
Area's foamed ceramics I, 6, combustion zone foamed ceramics II, 7, electronic ignition device.
Specific implementation mode
The concrete structure of the utility model is described in detail according to Fig. 1.Burner is bilateral symmetry, by periodically changing
To realization gaseous fuel, which is alternately entered from the left and right sides in burner, to burn.For the above half period, gas/air
Gaseous mixture enters burner from left side, and first by heat-accumulating area foamed ceramics 4, fuel is preheated at this, subsequently into combustion
It burns area's foamed ceramics I 5 and foamed ceramics II 6, electronic ignition device 7 lights gas and burn.Then, combustion product 2 passes through
Heat-accumulating area foamed ceramics 4 carries out heat exchange, by heat savings in porous media.By commutation, fuel/air mixture is from the right side
Effluent is into combustion product is flowed out from left side.
The burner of the utility model generally symmetrical structure, including heat-accumulating area and combustion zone.Heat-accumulating area is pyramidal structure,
Angle of inclination is 10-30 °, and combustion zone is cylindrical structure.Porous Jie of different size is filled in heat-accumulating area and combustion zone respectively
Material, role are also different.In heat-accumulating area, filling pore density is 50ppi, and the foam that porosity is 20%-30% is made pottery
Porcelain.When gaseous fuel flows into heat-accumulating area, flow area increases, and to reduce flow velocity, flame can be positioned to combustion zone combustion
It burns, achievees the purpose that anti-backfire；And when combustion product flows out heat-accumulating area, flow area reduces, and flow velocity increases, and enhancing convection current is changed
Heat effect reduces exhaust gas temperature loss, improves heat-accumulating area temperature.The foam of two kinds of different hole densities is radially filled in combustion zone
Ceramics, void density is larger on the outside, and void density is smaller in inside, void density 10-35ppi, and porosity is
80%-90%。
Since porosity is larger, helps to support to burn, improve ignition temperature.Meanwhile different void densities can be kept away
Exempting from flame front, nearby temperature gradient is steep, and temperature distributing disproportionation, the presence of local high temperature zone solves the problems, such as flame instability,
Keep burning more abundant, widened poor Flammability limits, that realizes low-BTU gas stablizes burning.By reversal valve, fuel/sky is realized
Gas mixture stablizes burning periodically by burner in burner.
Claims (4)
1. a kind of reciprocating multi-hole medium combustion device, which is characterized in that burner generally symmetrical structure is divided into heat-accumulating area and combustion
Burn area；The porous media material of different size is filled in heat-accumulating area and combustion zone respectively；Meanwhile radially filling two in combustion zone
The porous media material of the different hole densities of kind, void density is larger on the outside, and void density is smaller in inside；Pass through commutation
Valve realizes that fuel/air mixture periodically by burner, stablizes burning in burner.
2. a kind of reciprocating multi-hole medium combustion device according to claim 1, which is characterized in that the heat-accumulating area is cone
Shape structure, 10 ~ 30 ° of angle of inclination.
3. a kind of reciprocating multi-hole medium combustion device according to claim 1, which is characterized in that the heat-accumulating area it is more
Hole dielectric material, void density 50ppi, porosity 20%-30%, material are high temperature resistant foamed ceramics.
4. a kind of reciprocating multi-hole medium combustion device according to claim 1, which is characterized in that the combustion zone it is more
Hole dielectric material, void density 10-35ppi, porosity 80%-90%, material are high temperature resistant foamed ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820364940.2U CN208058844U (en) | 2018-03-19 | 2018-03-19 | A kind of reciprocating multi-hole medium combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820364940.2U CN208058844U (en) | 2018-03-19 | 2018-03-19 | A kind of reciprocating multi-hole medium combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208058844U true CN208058844U (en) | 2018-11-06 |
Family
ID=63989157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820364940.2U Expired - Fee Related CN208058844U (en) | 2018-03-19 | 2018-03-19 | A kind of reciprocating multi-hole medium combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208058844U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302539A (en) * | 2018-03-19 | 2018-07-20 | 沈阳工程学院 | A kind of reciprocating multi-hole medium combustion device |
| CN114623442A (en) * | 2022-04-11 | 2022-06-14 | 西安交通大学 | Integral gradual change type porous medium combustor and working method thereof |
| CN114935146A (en) * | 2022-04-11 | 2022-08-23 | 西安交通大学 | Flow-equalizing porous medium burner and working method thereof |
-
2018
- 2018-03-19 CN CN201820364940.2U patent/CN208058844U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302539A (en) * | 2018-03-19 | 2018-07-20 | 沈阳工程学院 | A kind of reciprocating multi-hole medium combustion device |
| CN108302539B (en) * | 2018-03-19 | 2023-07-14 | 沈阳工程学院 | Reciprocating porous medium burner |
| CN114623442A (en) * | 2022-04-11 | 2022-06-14 | 西安交通大学 | Integral gradual change type porous medium combustor and working method thereof |
| CN114935146A (en) * | 2022-04-11 | 2022-08-23 | 西安交通大学 | Flow-equalizing porous medium burner and working method thereof |
| CN114623442B (en) * | 2022-04-11 | 2022-12-09 | 西安交通大学 | Integral gradual change type porous medium combustor and working method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181106 Termination date: 20190319 |