CN103244271B - Compact microscale thermal energy power system - Google Patents
Compact microscale thermal energy power system Download PDFInfo
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- CN103244271B CN103244271B CN201310178046.8A CN201310178046A CN103244271B CN 103244271 B CN103244271 B CN 103244271B CN 201310178046 A CN201310178046 A CN 201310178046A CN 103244271 B CN103244271 B CN 103244271B
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Abstract
The invention relates to a compact microscale thermal energy power system, which belongs to the field of thermodynamics. The system comprises a burner, a porous medium, a turbine, a fan, an exhaust pipe, an air inlet pipe, a fuel tank, a fuel delivery pipe, an expansion bag, a heat pipe, a thermophotovoltaic material, a starting motor, a heating piece and a fuel regulating one-way valve. The system can convert chemical energy stored in a liquid hydrocarbon fuel into electric energy; continuous running of the system without an outside energy source can be realized by virtue of chemical reaction of the system and internal energy and substance transfer; the system is compact in structure, perfect in function and novel in concept, and is a very dominant novel product; and the system converts the chemical energy stored in the liquid hydrocarbon fuel into the electric energy efficiently and quietly based on a microscale combustion principle, and is very suitable for serving as single-person power supply equipment for personal computing and communication equipment, armies and quick response departments, and power supply support equipment of special industries under severe conditions at present and in future.
Description
Technical field
The present invention relates to a kind of Compact microscale thermal energy power system, belong to thermomechanics field.
Background technique
Liquid carbon hydrogen fuel energy density is high, carriage/storage performance is good, liquid carbon hydrogen fuel is placed in the burning that small container carries out micro-scale level to be just suggested in last century Mo with the concept obtaining long-acting highdensity electric energy, but due to the basic principle of burning and the restriction of micro-scale gas flow self character, liquid fuel is difficult to continued stable combustion in small container, and then release heat export electric energy.Cause the main cause of this phenomenon as follows:
1. in micro-scale gas flow, the area/volume ratio of device is very large, and cause the thermal loss in per unit volume serious, the shortage of heat that chemical reaction discharges is to maintain proceeding of self.
2. in micro-scale gas flow, passage is narrow and small, its channel diameter is usually less than the minimum quenching distance of fuel, the free radicals produced in combustion chemistry reaction is consumed fast after touching solid wall surface, therefore cannot continue to keep chemical reaction, thus cause the extinguishing of flame.
3. liquid carbon hydrogen fuel molecule is comparatively large, and in the process of reaction, chemical reaction is complicated, and chemical reaction rate is comparatively slow, and in the process of reaction, there is complicated phase transformation, therefore more not easily maintains burning.
Researcher has carried out much work in raising micro-scale gas flow device combustion stability, reduction heat loss, as adopted recuperating device, has utilized the high-temperature fuel gas after burning to heat unburned gas, to reduce quenching distance; Select the wall surface material that heat-conducting property is suitable, burner can be heated etc. upstream gas again while heat loss is not a lot.
In the energy produced burning utilizes, researcher proposes and has attempted various ways, wherein to adopt moving element comparatively common as Conversion of Energy parts, comprise Stirling engine, rotary engine, turbine, pulse burner, reciprocating engine etc., these firing unit energy conversion efficiencies are high, but quality is comparatively large, and noise is higher.In addition the firing unit not containing moving element such as swiss roll type burner, flat-plate burner is also had, such device is many exports electric energy by heat-electric converting material or heat-light-electric converting material, there is quality light, the features such as noise free, but energy conversion efficiency is relatively low.
Research work relevant at present mainly concentrates on the micro-scale gas flow aspect of gaseous fuel, and majority is only principle model machine, and the main feature of this type of model machine is:
1. this type of model machine adopts gaseous fuel as the fuel of burner, and gaseous fuel volume density is very low, very high to the requirement stored, and there is comparatively serious potential safety hazard, easily causes personnel and property loss once reveal.
2. this type of model machine all needs outside energy to pressurize to fuel and air at present, thus the normal operation of the system of maintenance, therefore do not possess continuous firing ability.
3. this type of prototype structure imperfection, system is comparatively huge and complicated, compact not.
4. adopt the to-and-fro motion of some parts of the model machine of moving element can produce a large amount of noises, adverse effect is caused to the health of user.
Along with the quick consumption of fossil energy, the constant threat of environmental problem, and the fast development of small sized personal calculating/communication apparatus all needs more efficient, clean, compact small-sized power supply unit; Special industry is also had higher requirement to the long-lasting of power supply unit simultaneously.
Summary of the invention
The object of the invention is to solve due to reasons such as prior art compactness are inadequate, noise is comparatively large, energy is under-supply, cause the problem that existing minute yardstick heat energy power mechanism cannot satisfy social needs completely, thus a kind of Compact microscale thermal energy power system is provided.
The object of the invention is to be achieved through the following technical solutions.
A kind of compact type minute yardstick heat energy power mechanism of the present invention, comprises burner, porous medium, turbine, fan, outlet pipe, suction tude, fuel tank, fuel-supply pipe, expanding bag, heat pipe, thermo-optical electric material, starting electrical machinery, heater band, fuel adjusting one-way valve;
Annexation:
Burner is made up of internal channel and external chennel, and porous medium is arranged in the internal channel of burner.
Fan is connected by suction tude with the internal channel of burner; One end of outlet pipe connects the external chennel of burner, and the other end is then connected with turbine; Fan is connected by a transmission shaft with turbine; Air enters Guan Zhongyu fuel gas in burner by suction tude and mixes mutually under the effect of fan, and mixed gas completes burning in burner.Complete the high-temperature gas after burning and drive turbine by outlet pipe, turbine then drives fan running by transmission shaft.
One end of fuel tank is connected with porous medium by burning delivery pipe, the other end is then connected with heat, fuel adjusting one-way valve is positioned on fuel-supply pipe, play the effect of regulate fuel flow, in the process of Compact microscale thermal energy power system work, the size of system output power is regulated by the number of regulate fuel flow.
Burner is connected to the inside of fuel tank by heat pipe.One end cover that heat pipe is positioned at fuel tank interior has expanding bag, and heater band is then positioned at expanding bag inside, is connected with heat pipe.Expanding bag is built-in with low-boiling point liquid.
The part that combustor external is not connected with heat pipe is coated with thermo-optical electric material, thermo-optical electric material by delivery of electrical energy to load equipment.
Starting electrical machinery is connected with fan.
Described low-boiling point liquid be boiling point lower than the liquid of 0 DEG C, comprise freon, butane.
Described porous medium be temperature higher than 1500K time, not with the porous medium of air and fuel liquid generation chemical reaction, comprise asbestos, polyacrylonitrile.
Working procedure
When system starts, external power supply drives starting electrical machinery and heater band simultaneously, and charges to the electrical spark on porous medium surface; Starting electrical machinery drive fan is rotated; Heater band heats up and impels low-boiling point liquid to volatilize, and inflation pocket inflates extruded fuel, enters in porous medium by fuel-supply pipe; And the mixed gas of ignited by electrical spark air and fuel; Air enters Guan Zhongyu fuel gas in burner by suction tude and mixes further and complete burning under the effect of fan; Complete the gas after burning and drive turbine by outlet pipe, turbine drives fan running by transmission shaft; The high-temperature gas that burning produces heated the surface of burner, and heat energy and light energy conversion are that electric energy exports by thermo-optical electric material, is supplied to load equipment and uses.A small amount of heat is passed to heater band by heat pipe, and low-boiling point liquid is heated to gaseous state by heater band, impels inflation pocket inflates, the fuel in extruded fuel case, realizes the fuel supply to burner; After system worked well, external power supply disconnects, the energy that system relies on the fuel entrained by self to discharge, and is maintained normal work by all parts of energy drives.
Beneficial effect
1, a kind of compact type minute yardstick heat energy power mechanism of the present invention, package unit size is only 69.25 × 41.75 × 19.6mm, simple and compact for structure, meets design requirement.
2, a kind of compact type minute yardstick heat energy power mechanism of the present invention, due to turbine-fan reasonable application, use thermo-optical electric installation to carry out electric transformation of energy, therefore noise is extremely low.
3, a kind of compact type minute yardstick heat energy power mechanism of the present invention, with liquid fuel as energy source, relative to gaseous fuel, there is energy density high, carriage/storage performance is good, the features such as high safety, can meet the needs of the long-time continuous firing of system.
4, a kind of compact type minute yardstick heat energy power mechanism of the present invention, has perfect fuel/air mixture supply system, can namely rely on the design of self to operate continuously upon actuation, and can regulate, and obtains different electric energy and exports.
5, a kind of compact type minute yardstick heat energy power mechanism of the present invention, based on micro-scale gas flow principle, the chemical energy contained in liquid carbon hydrogen fuel is efficiently undisturbedly converted into electric energy, is suitable as very much the individual calculus of current and following a period of time and communication apparatus, the single formula power supply unit of army and rapid response department and special industry support equipment of power supply under severe conditions and uses.
Accompanying drawing explanation
Fig. 1 is the sectional view that Compact microscale thermal energy power system goes up in the axial direction;
Fig. 2 is Compact microscale thermal energy power system left view;
Fig. 3 is Compact microscale thermal energy power system front view.
In figure, 1. burner, 2. porous medium, 3. turbine, 4. fan, 5. outlet pipe, 6. suction tude, 7. fuel tank, 8. fuel-supply pipe, 9. expanding bag, 10. heat pipe, 11. thermo-optical electric materials, 12. starting electrical machinerys, 13. heater bands, 14. fuel adjusting one-way valves.
Embodiment
Embodiment 1
A kind of compact type minute yardstick heat energy power mechanism, comprises 1. burners, 2. porous medium, 3. turbine, 4. fan, 5. outlet pipe, 6. suction tude, 7. fuel tank, 8. fuel-supply pipe, 9. expanding bag, 10. heat pipe, 11. thermo-optical electric materials, 12. starting electrical machinerys, 13. heater bands, 14. fuel adjusting one-way valves;
Annexation:
Burner 1 is made up of internal channel and external chennel, and porous medium 2 is arranged in the internal channel of burner 1.
Fan 4 is connected by suction tude 6 with the internal channel of burner 1; One end of outlet pipe 5 connects the external chennel of burner 1, and the other end is then connected with turbine 3; Fan 4 is connected by a transmission shaft with turbine 3; The interior Guan Zhongyu fuel gas that air enters burner 1 by suction tude (assembly) 6 under the effect of fan 4 mixes mutually, and mixed gas completes burning in burner 1.Complete the high-temperature gas after burning and drive turbine 3 by outlet pipe (assembly) 5, turbine 3 drives fan 4 to operate by transmission shaft.
One end of fuel tank 7 is linked together with porous medium 2 by burning delivery pipe 8, the other end is then connected with heat pipe 10, fuel adjusting one-way valve 14 is positioned on fuel-supply pipe 8, play the effect of regulate fuel flow, in the process of Compact microscale thermal energy power system work, the size of system output power is regulated by the number of regulate fuel flow.
Burner 1 is connected to the inside of fuel tank 7 by heat pipe 10.One end cover that heat pipe 10 is positioned at fuel tank 7 inside has expanding bag 9, and it is inner that heater band 13 is positioned at expanding bag 9, is connected with heat pipe 10.Expanding bag 9 is built-in with low-boiling point liquid.
The part that burner 1 outside is not connected with heat pipe 10 is coated with thermo-optical electric material 11, thermo-optical electric material 11 by delivery of electrical energy to load equipment.
Starting electrical machinery 12 is connected with fan 4.
Described low-boiling point liquid is freon in an embodiment.
Described porous medium is polyacrylonitrile in an embodiment.
Working procedure
When system starts, external power supply drives starting electrical machinery 12 and heater band 13 simultaneously; Starting electrical machinery 12 drive fan 4 is rotated; Heater band 13 heats up and impels freon to volatilize, and expanding bag 9 expands extruded fuel, enters in porous medium 2 by fuel-supply pipe 8; And the mixed gas of ignited by the electrical spark on porous medium 2 surface air and fuel; Air enters Guan Zhongyu fuel gas in burner 1 by suction tude 6 and mixes further and complete burning under the effect of fan 4; Complete the gas after burning and drive turbine 3 by outlet pipe 5, turbine 3 drives fan 4 to operate by transmission shaft; The high-temperature gas that burning produces heated the surface of burner 1, and heat energy and light energy conversion are that electric energy exports by thermo-optical electric material 11, is supplied to load equipment and uses.A small amount of heat is passed to heater band 13 by heat pipe 10, and low-boiling point liquid is heated to gaseous state by heater band 13, impels expanding bag 9 to expand, the fuel in extruded fuel case 7, realizes the fuel supply to burner; After system worked well, external power supply disconnects, the energy drives all parts maintenance work produced of system dependence self.
Package unit size is only 69.25 × 41.75 × 19.6mm,
Claims (4)
1. a compact type minute yardstick heat energy power mechanism, it is characterized in that: comprise burner (1), porous medium (2), turbine (3), fan (4), outlet pipe (5), suction tude (6), fuel tank (7), fuel-supply pipe (8), expanding bag (9), heat pipe (10), thermo-optical electric material (11), starting electrical machinery (12), heater band (13), fuel adjusting one-way valve (14); Burner (1) is made up of internal channel and external chennel, and porous medium (2) is arranged in the internal channel of burner (1); Fan (4) is connected by suction tude (6) with the internal channel of burner (1); One end of outlet pipe (5) connects the external chennel of burner (1), and the other end is then connected with turbine (3); Fan (4) is connected by a transmission shaft with turbine (3); The interior Guan Zhongyu fuel gas that air enters burner (1) by suction tude (6) under the effect of fan (4) mixes mutually, and mixed gas completes burning in burner (1); Complete the high-temperature gas after burning and drive turbine (3) by outlet pipe (5), turbine (3) then drives fan (4) to operate by transmission shaft; One end of fuel tank (7) is connected with porous medium (2) by burning delivery pipe (8), the other end is then connected with heat pipe (10), fuel adjusting one-way valve (14) is positioned on fuel-supply pipe (8), play the effect of regulate fuel flow, in the process of Compact microscale thermal energy power system work, the size of system output power is regulated by the number of regulate fuel flow; Burner (1) is connected to the inside of fuel tank (7) by heat pipe (10); One end cover that heat pipe (10) is positioned at fuel tank (7) inner has expanding bag (9), and it is inner that heater band (13) is then positioned at expanding bag (9), is connected with heat pipe (10); Expanding bag (9) is built-in with low-boiling point liquid; The part that burner (1) outside is not connected with heat pipe (10) is coated with thermo-optical electric material (11), thermo-optical electric material (11) by delivery of electrical energy to load equipment; Starting electrical machinery (12) is connected with fan (4).
2., as right wants a kind of compact type minute yardstick heat energy power mechanism as described in 1, it is characterized in that: described low-boiling point liquid be boiling point lower than the liquid of 0 DEG C, comprise freon, butane.
3., as right wants a kind of compact type minute yardstick heat energy power mechanism as described in 1, it is characterized in that: described porous medium be temperature higher than 1500K time, not with the porous medium of air and fuel liquid generation chemical reaction, comprise asbestos, polyacrylonitrile.
4. as right wants a kind of compact type minute yardstick heat energy power mechanism as described in 1, it is characterized in that: device working procedure is: when system starts, external power supply drives starting electrical machinery (12) and heater band (13) simultaneously, and the electrical spark charging to porous medium (2) surface; Starting electrical machinery (12) drive fan (4) is rotated; Heater band (13) heats up and impels low-boiling point liquid to volatilize, and expanding bag (9) expansion extruded fuel, enters in porous medium (2) by fuel-supply pipe (8); And the mixed gas of ignited by electrical spark air and fuel; The interior Guan Zhongyu fuel gas that air enters burner (1) by suction tude (6) under the effect of fan (4) mixes further and completes burning; Complete the gas after burning and drive turbine (3) by outlet pipe (5), turbine (3) drives fan (4) to operate by transmission shaft; The high-temperature gas that burning produces heated the surface of burner (1), and heat energy and light energy conversion are that electric energy exports by thermo-optical electric material (11), is supplied to load equipment and uses; A small amount of heat is passed to heater band (13) by heat pipe (10), low-boiling point liquid is heated to gaseous state by heater band (13), impel expanding bag (9) to expand, the fuel in extruded fuel case (7), realize the fuel supply to burner; After system worked well, external power supply disconnects, the energy that system relies on the fuel entrained by self to discharge, and is maintained normal work by all parts of energy drives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310178046.8A CN103244271B (en) | 2013-05-14 | 2013-05-14 | Compact microscale thermal energy power system |
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| CN201310178046.8A CN103244271B (en) | 2013-05-14 | 2013-05-14 | Compact microscale thermal energy power system |
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| CN103244271B true CN103244271B (en) | 2015-03-11 |
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| CN104577174B (en) * | 2015-01-20 | 2016-08-17 | 北京理工大学 | Utilize outdoor liquefied gas as the minicell that works long hours of fuel |
| CN105066174A (en) * | 2015-07-24 | 2015-11-18 | 北京航空航天大学 | Super-micro turbojet engine combustor with inverted-L-shaped head |
| CN113339796B (en) * | 2021-06-02 | 2023-06-30 | 北京理工大学 | Thermoelectric system based on pulse energy supply burner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5512109A (en) * | 1992-06-30 | 1996-04-30 | Jx Crystals, Inc. | Generator with thermophotovoltaic cells and hydrocarbon burner |
| US6111187A (en) * | 1998-03-31 | 2000-08-29 | The United States Of America As Represented By The Secretary Of The Navy | Isolated compensated fluid delivery system |
| US6924054B2 (en) * | 2001-10-29 | 2005-08-02 | Hewlett-Packard Development Company L.P. | Fuel supply for a fuel cell |
| US7270907B2 (en) * | 2002-01-08 | 2007-09-18 | Procter & Gamble Company | Fuel container and delivery apparatus for a liquid feed fuel cell system |
| CN100394108C (en) * | 2006-01-20 | 2008-06-11 | 东北大学 | Flame length adjustable metal-ceramic porous medium gas fuel burner |
| CN101354132A (en) * | 2008-05-23 | 2009-01-28 | 江苏大学 | High-efficiency porous media combustor for minitype heat optoelectronic system |
| CN102287819B (en) * | 2011-07-01 | 2012-12-12 | 中国计量学院 | Porous medium combustor for low-caloric-value gas fuel |
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