CN201289082Y - Novel backheating porous media burning raidiation applicator - Google Patents
Novel backheating porous media burning raidiation applicator Download PDFInfo
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- CN201289082Y CN201289082Y CNU2008201865278U CN200820186527U CN201289082Y CN 201289082 Y CN201289082 Y CN 201289082Y CN U2008201865278 U CNU2008201865278 U CN U2008201865278U CN 200820186527 U CN200820186527 U CN 200820186527U CN 201289082 Y CN201289082 Y CN 201289082Y
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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
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Abstract
The utility model relates to a high temperature radiation source, that is a heat regenerative porous medium burning late-model radiator, comprising a cylindrical burning radiator, further a shell and tube superheater provided with fine copper pipes distributed evenly in a heavy caliber pipe body, upper and lower ends of which are respectively connected with flange interfaces. The upper flange interface is connected with a smoke outlet and the lower flange interface is connected with an upper end opening of the burning radiator. The upper portion is provided with an air inlet pipe opening on the side; the lower end opening of the burning radiator is connected with a pre-heat area which is in an inverted cone frustum shape, lower end opening of which is connected with a mix chamber. One end of a connection pipe is communicated with one side at lower portion of the shell and tube superheater and the other end is communicated with bottom of the mix chamber. Beneficial effects are that burning is processed in the porous medium, which is even and stable to obtain high temperature of high wall surface. Before the mixed gas enters the burning area, heat regenerative and pre-heating means are used to further improve radiation temperature. From the respect of burning power or fuel rich or poor extend, the utility model is suitable for wider burning scale.
Description
Technical field
The utility model relates to a kind of hyperthermia radiation source, particularly uses the hyperthermia radiation source at the thermoelectric conversion of small portable (TPV) system.
Background technology
The thermoelectric conversion of small portable (TPV) system projects the energy from thermal source on the PV battery by radiator, realizes thermoelectric conversion.In the TPV of numerous kinds, because the energy requirement difference, the band gap of PV battery is not equal, needs thermal source that corresponding emittance and radiation temperature are provided.Therefore, thermal source has constituted the key of this type systematic.Because the thermal source that burning constitutes can adopt various informative chemical fuel, as liquid fuel and gaseous fuel, chamber structure is simple and be easy to control, good stability, has attracted researcher's main research energy.
Relevant TPV systematic research, the foreign scholar is devoted to heating systems such as family expenses fireplace, or cylindrical cavity burning radiation device is as thermal source.This type of device structure is simple, is unfavorable for obtaining the uniform radiating surface of high temperature.On this basis, some researchers utilize air cooling PV battery, and this part hot-air is sent into combustion chambers burn.These means have improved radiation efficiency to a certain extent.Because traditional combustion chamber technology is ripe relatively, therefore the radiation efficiency of present most chemical fuel TPV can reach about 40%, and can further improve by the combustion chamber heat radiation efficiency of method improvements such as backheat, the efficient of the backheat combustion chamber of design can reach 63% in the document (GColangelo, A.de Risi.TPV have experimental study (Experimental study of a burner with high temperature heat recoverysystem for TPV applications) [J] .Energy Conversion and Management47 (2006) 1192-1206. of the burner of heat regenerative system in using).But because the restriction of PV battery band gap, if can not obtain uniform radiating surface temperature, its conversion efficiency of thermoelectric is still very low.At present, the research of domestic burning radiation device also is in the starting stage.Document (Xue Hong, Miao Jiaxuan. miniature hot photovoltaic system porous media combustor Performance Experiment [J]. combustion science and technology, 12 (4), 2006,369-372.) filling porous medium in the micro-combustion system is proposed, to conduct heat, to increase radiator surface temperature uniformity between reinforcement and the radiator.
Combustion technology in the porous media is the novel combustion technology that grows up the end of the eighties in last century to the beginning of the nineties, it is to introduce porous media in combustion system, utilize the big specific heat poultry heat effect and the good heat-conducting of solid dielectric, fuel/air mixture is carried out preheating to improve efficiency of combustion.Compare with the combustion technology during tradition freely flows, advantages such as the burning in the porous media has that the poor combustion limit is low, flame holding good, efficiency of combustion is high, uniformity of temperature profile, pollutant emission are few can be widely used in domestic heating system, power-equipment, automobile pre-heating system and other civilian and industrial processes.If multi-hole medium combustion technology and TPV system can be combined, then the radiation efficiency of TPV system will have very large raising.Multi-hole medium combustion radiator behind the introducing regenerator can obtain higher radiation temperature and fuel conversion efficiency.
Summary of the invention
In order to solve the problem that is difficult to organize burning in the inhomogeneous and little space of surface temperature, the utility model provides a kind of novel radiator of back-heating type multi-hole medium combustion.
Concrete technical solution is as follows:
The novel radiator of back-heating type multi-hole medium combustion comprises columned burning radiation device;
Also comprise the shell and tube regenerator that is laid with thin copper pipe in the heavy caliber body, its heavy caliber body is respectively flange-interface in two ends up and down, its upper flanges interface connects outlet flue, and its lower end flange-interface is connecting burning radiation device upper port, and its top one side is provided with the air inlet mouth of pipe;
Burning radiation device lower port is being communicated with the preheating zone;
The preheating zone is the rounding frustum, and its lower port is being communicated with hybrid chamber, and hybrid chamber 4 tops are provided with porous plate;
Described burning radiation device comprises the body of cylindrical tube shape, and body is a hollow porous silicon carbide material, and the body middle part is provided with refractory material, and the external cylindrical surface of body is provided with sealing material layer and selectivity radiating layer, and burning radiation device top one side is provided with igniter;
Be full of alumina globule in the described preheating zone;
Be provided with antipriming pipe in the described hybrid chamber, antipriming pipe is made up of two concentric annular pipes and combustion gas straight tube, one side of two concentric annular pipes is being communicated with the combustion gas straight tube, and an end of combustion gas straight tube is evenly equipped with pore from radially extending outside the hybrid chamber on the sidewall of two concentric annular pipes;
One end of a cross over pipe is being communicated with shell and tube regenerator bottom one side, and the other end is being communicated with the hybrid chamber bottom.
The heavy caliber body material of described shell and tube regenerator is a stainless steel, and diameter is 120 millimeters, and thin copper pipe diameter is the 8-12 millimeter.
The hole density of described hollow porous silicon carbide material is 10-100PPI.
Described encapsulant layer material is a carborundum, and thickness is the 1-2 millimeter.
Hole diameter on the described concentric annular pipe is the 0.3-0.8 millimeter.
Be provided with radiation shield between described shell and tube regenerator and the burning radiation device.
This burning radiation device can effectively be organized the burning of the poor fuel of gas, can not only obtain very high radiation temperature, and the radiating surface temperature is even, and combustion noise is little, the chamber structure compactness.
The beneficial effects of the utility model are that burning is carried out in the hollow porous media, and is uniform and stable, can obtain very high wall surface temperature, and just passes through means such as backheat, preheating before gaseous mixture enters the combustion zone, can further improve radiation temperature.No matter this system can both be applicable to wider combustion range from combustion power or the rich or poor degree of fuel.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the A-A cutaway view of Fig. 1,
Fig. 3 is the B-B cutaway view of Fig. 1,
Fig. 4 is the C-C cutaway view of Fig. 1,
Fig. 5 is the D-D cutaway view of Fig. 4,
Fig. 6 is the utility model fundamental diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Referring to Fig. 1, the novel radiator of back-heating type multi-hole medium combustion comprises columned burning radiation device 2, also comprise the shell and tube regenerator 1 that is laid with thin copper pipe 13 in the heavy caliber body, see Fig. 3, its heavy caliber body is respectively flange-interface in two ends up and down, its upper flanges interface connects outlet flue 12, and its lower end flange-interface is connecting burning radiation device 2 upper port, and its top one side is provided with the air inlet mouth of pipe 11; The heavy caliber body material of shell and tube regenerator 1 is a stainless steel, and diameter is 120 millimeters, and thin copper pipe diameter is 10 millimeters (diameter range is the 8-12 millimeter).Between shell and tube regenerator 1 and the burning radiation device 2 radiation shield 5 is installed;
Preheating zone 3 is the rounding frustum, and its lower port is being communicated with hybrid chamber 4, and a porous plate is arranged at hybrid chamber 4 tops.
See that Fig. 1, Fig. 2, burning radiation device comprise the body of cylindrical tube shape, the porous material of body is a carborundum, the body middle part is provided with fire clay 8, the external cylindrical surface of body is provided with sealant and selectivity radiating layer 7, the sealant material is a carborundum, and thickness is 1.5 millimeters (thickness range is the 1-2 millimeter), and described selectivity radiating layer material is a tungsten, thickness is the 1-2 millimeter, and burning radiation device 2 tops one side is equipped with igniter 6;
Be full of alumina globule in the preheating zone, the alumina globule diameter is 0.5 millimeter (diameter range is the 0.5-1 millimeter).
Be provided with antipriming pipe 9 in the hybrid chamber, antipriming pipe is made up of two concentric annular pipes and combustion gas straight tube, one side of two concentric annular pipes is being communicated with the combustion gas straight tube, one end of combustion gas straight tube is from radially extending outside the hybrid chamber, be evenly equipped with pore 14 on the sidewall of two concentric annular pipes, pore 14 diameters are 0.5 millimeter (diameter range is the 0.3-0.8 millimeter), see Fig. 4 and Fig. 5.
One end of a cross over pipe 10 is being communicated with shell and tube regenerator 1 bottom one side, and the other end is being communicated with hybrid chamber 4 bottoms.
Concrete fitting operation is as follows:
At first be to place hybrid chamber 4 chassis on the support to link to each other, the chassis is the air intake after the backheat, and the stainless steel tube of welding is arranged at the bottom, chassis.Air intake and fuel gas inlet installation like this.A porous plate is arranged at hybrid chamber 4 tops, and its effect is to make gaseous mixture enter preheating zone, top 3, and fixedly preheating zone 3 interior aluminium oxide are piled up bead.Then preheating zone 3 circular platform type cavitys are inverted on the hybrid chamber 4, fill the alumina globule of Φ 0.5mm in the preheating zone 3, the porous plate on 4 tops, the mixed chamber of bead is held, and can not leak.But this part is the preheating gaseous mixture not only, and gas-air is more fully mixed, and can also prevent tempering.Because it is little to pile up Interglobular space, much smaller than the quenching distance of flame.So the safety coefficient height, good stability.Pile up bead and be filled into almost round platform outlet always, round platform upper design flange-interface can be used for installing PV battery, glass sealing cover etc.Pile up and place hollow tubular type SiC porous material (external diameter 110mm, internal diameter 50mm, long 180mm on the bead, hole density has 10PPI, 40PPI, 100PPI), interface seals with fire clay, also fills up fire clay in the hollow tube, the porous material outside wall surface is radiating surface, and swept area is 622cm
2SiC porous material top extend in the shell and tube regenerator 1, between separate with radiation shield 5, interface seals with fire clay.The effect of radiation shield 5 is to reduce the radiation of combustion medium to shell and tube regenerator 1, and allowing more, multipotency radiate from wall.Shell and tube regenerator 1 is settled an ignition 6 with the interface of SiC porous material.After shell and tube regenerator 1 usefulness support is fixing, screw thread in succession regenerator with the metal tube between the hybrid chamber.Whole burning radiation device is with regard to installation.
At last, fuel (propane, natural gas, water-gas) and air are connected to hybrid chamber and regenerator with flexible pipe respectively, the middle flowmeter valve control flow separately of using.The gas flow process is shown in accompanying drawing 1 arrow, the air of flowing through behind the regenerator can be heated to 200 ℃～400 ℃ (far below the burning-points of gaseous fuel), arrives hybrid chamber by the Stainless Steel pipe and fully mixes with cold combustion gas, and the hybrid chamber internal pore is little, flow velocity is big, can not react.Gaseous mixture is preheated once more at the accumulation bead, is easy to just tissue burning when entering combustion medium porous zone.Flue gas is discharged by the outlet flue 12 of regenerator.
During work, seeing Fig. 6, is the novel radiator (I) of back-heating type multi-hole medium combustion in the frame of broken lines, is the utility model part.Wave filter (III) on the burning radiation device outer cover, the radiated wave that comes out from radiator is radiated on the PV battery (IV) by behind the wave filter.The flue gas that regenerator (1) comes out can be utilized in heat exchanger (II) once more.
Regulate combustion gas and air flow control valve earlier, send into the burning radiation device by low flow rate under the equivalent proportion, light the back until stable with ignition 6, this moment, porous material was high-temperature red state, was adjusted to the combustion power that needs then.After tested, this burning radiation device can be in power 20kW, equivalent proportion 0.3 above smooth combustion.And low equivalent can obtain radiating surface temperature relatively uniformly during than (about 0.5), and high equivalent weight is during than (about 0.9), the radiation temperature height, and fired state is good.Native system can obtain about 900 ℃ of wall surface temperatures at combustion power during for 4kW.And wall surface temperature is even, and axial-temperature gradient is less than 1 ℃/mm.
Claims (6)
1, the novel radiator of back-heating type multi-hole medium combustion comprises columned burning radiation device, it is characterized in that:
Also comprise the shell and tube regenerator that is laid with thin copper pipe in the heavy caliber body, its heavy caliber body is respectively flange-interface in two ends up and down, its upper flanges interface connects outlet flue, and its lower end flange-interface is connecting burning radiation device upper port, and its top one side is provided with the air inlet mouth of pipe;
Burning radiation device lower port is being communicated with the preheating zone;
The preheating zone is the rounding frustum, and its lower port is being communicated with hybrid chamber, and hybrid chamber 4 tops are provided with porous plate;
Described burning radiation device comprises the body of cylindrical tube shape, and body is a hollow porous silicon carbide material, and the body middle part is provided with refractory material, and the external cylindrical surface of body is provided with sealing material layer and selectivity radiating layer, and burning radiation device top one side is provided with igniter;
Be full of alumina globule in the described preheating zone;
Be provided with antipriming pipe in the described hybrid chamber, antipriming pipe is made up of two concentric annular pipes and combustion gas straight tube, one side of two concentric annular pipes is being communicated with the combustion gas straight tube, and an end of combustion gas straight tube is evenly equipped with pore from radially extending outside the hybrid chamber on the sidewall of two concentric annular pipes;
One end of a cross over pipe is being communicated with shell and tube regenerator bottom one side, and the other end is being communicated with the hybrid chamber bottom.
2, the novel radiator of back-heating type multi-hole medium combustion according to claim 1 is characterized in that:
The heavy caliber body material of described shell and tube regenerator is a stainless steel, and diameter is 120 millimeters, and thin copper pipe diameter is the 8-12 millimeter.
3, the novel radiator of back-heating type multi-hole medium combustion according to claim 1 is characterized in that: the hole density of described hollow porous silicon carbide material is 10-100PPI.
4, the novel radiator of back-heating type multi-hole medium combustion according to claim 1 is characterized in that: described encapsulant layer material is a carborundum, and thickness is the 1-2 millimeter.
5, the novel radiator of back-heating type multi-hole medium combustion according to claim 1 is characterized in that: the hole diameter on the described concentric annular pipe is the 0.3-0.8 millimeter.
6, the novel radiator of back-heating type multi-hole medium combustion according to claim 1 is characterized in that: be provided with radiation shield between described shell and tube regenerator and the burning radiation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201865278U CN201289082Y (en) | 2008-10-24 | 2008-10-24 | Novel backheating porous media burning raidiation applicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201865278U CN201289082Y (en) | 2008-10-24 | 2008-10-24 | Novel backheating porous media burning raidiation applicator |
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| Publication Number | Publication Date |
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| CN201289082Y true CN201289082Y (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201865278U Expired - Fee Related CN201289082Y (en) | 2008-10-24 | 2008-10-24 | Novel backheating porous media burning raidiation applicator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444893A (en) * | 2011-12-20 | 2012-05-09 | 沈阳工程学院 | Gas Fuel Porous Media Surface Burner |
| CN102563639A (en) * | 2011-12-30 | 2012-07-11 | 西安交通大学 | Porous medium and heat pipe combustor for liquid fuel |
| CN103712211A (en) * | 2013-12-18 | 2014-04-09 | 江苏大学 | Pre-mixing micro-catalysis combustion chamber with low heat loss |
| CN106537035A (en) * | 2014-05-20 | 2017-03-22 | 西门子公司 | Combustion of lithium at different temperatures and pressures and with gas surpluses using porous tubes as burners |
| CN109611838A (en) * | 2018-12-12 | 2019-04-12 | 沈阳工程学院 | Column type side wall radiant low calorific value gas porous media burner |
| CN112468060A (en) * | 2020-11-03 | 2021-03-09 | 武汉理工大学 | Thermophotovoltaic power generation system and method based on liquid fuel porous medium combustion |
| CN113804408A (en) * | 2021-10-18 | 2021-12-17 | 兰州大学 | Microstructure radiator and method of making the same |
-
2008
- 2008-10-24 CN CNU2008201865278U patent/CN201289082Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444893A (en) * | 2011-12-20 | 2012-05-09 | 沈阳工程学院 | Gas Fuel Porous Media Surface Burner |
| CN102563639A (en) * | 2011-12-30 | 2012-07-11 | 西安交通大学 | Porous medium and heat pipe combustor for liquid fuel |
| CN102563639B (en) * | 2011-12-30 | 2014-01-29 | 西安交通大学 | A Porous Media-Heat Pipe Burner for Liquid Fuel |
| CN103712211A (en) * | 2013-12-18 | 2014-04-09 | 江苏大学 | Pre-mixing micro-catalysis combustion chamber with low heat loss |
| CN103712211B (en) * | 2013-12-18 | 2016-04-06 | 江苏大学 | A kind of micro-catalytic combustor of low-heat loss premixed |
| CN106537035A (en) * | 2014-05-20 | 2017-03-22 | 西门子公司 | Combustion of lithium at different temperatures and pressures and with gas surpluses using porous tubes as burners |
| CN109611838A (en) * | 2018-12-12 | 2019-04-12 | 沈阳工程学院 | Column type side wall radiant low calorific value gas porous media burner |
| CN112468060A (en) * | 2020-11-03 | 2021-03-09 | 武汉理工大学 | Thermophotovoltaic power generation system and method based on liquid fuel porous medium combustion |
| CN113804408A (en) * | 2021-10-18 | 2021-12-17 | 兰州大学 | Microstructure radiator and method of making the same |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20101024 |