CN103953456A - Spatial radiation-cooled free-piston Stirling engine - Google Patents
Spatial radiation-cooled free-piston Stirling engine Download PDFInfo
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- CN103953456A CN103953456A CN201410149718.7A CN201410149718A CN103953456A CN 103953456 A CN103953456 A CN 103953456A CN 201410149718 A CN201410149718 A CN 201410149718A CN 103953456 A CN103953456 A CN 103953456A
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Abstract
A spatial radiation-cooled free-piston Stirling engine belongs to the field of Stirling engine utilization. A heater (3) and a heat regenerator (15) are respectively mounted in a heating chamber (2) and a heat regeneration chamber (4) of a displacer piston cylinder. The heater (3) is integrally foamed porous material as a turbulator for intensifying the heat exchange between the air and an outer cylinder (1), and the heat regenerator (15) is made of integrally foamed porous material; circular heat tubes (5) are mounted in a cooling chamber (17), wherein the part of the cooling chamber, in which the circular heat tubes (5) are mounted, is an evaporation section, the middle part is a thermal leakage current section, and the part which stretches out of the outer cylinder (1) is a heat dissipation section or a condensation section; a radiation shield (6) is mounted on the circular heat tubes (5) and the heat dissipation section to carry out radiative cooling; the radiation shield (6) is of a rib plate structure. Because the spatial radiation-cooled free-piston Stirling engine uses the integrally foamed porous material to intensify heat exchange in the heating chamber, the heating capability is enhanced; because the heat tubes are utilized to carry out radiative cooling, the difficulty of spatial water cooling is decreased.
Description
Affiliated technical field
The present invention relates to a kind of space radiation cooling and with integral foam porous material the free piston stirling engine as heater, belong to heat engine and utilize field.
Background technique
Stirling engine (Stirling Engine) is a kind of closed cycle reciprocating engine of external heat.In this class machine, working medium (being generally hydrogen, helium or air) is closed in circulation loop, the flow direction of the no-load voltage ratio controlled medium by volume of cylinder in closed cycle loop; In lower temperature and pressure lower compression working medium, under higher temperature and pressure, expand, thereby obtain positive circulation merit.Its thermal procession loops by Stirling.
Stirling engine with free piston is an important branch of Stirling engine, is a kind of power plant of realizing thermodynamic cycle by reciprocating motion of the pistons.This motion is because the interaction of gas force and power between gas force and parts produces.Its working principle following volumes such as (, heat engine principle and design, National Defense Industry Press, 1987) Qian Guozhu:
Stirling engine with free piston is made up of three parts substantially: heavier power piston, light gas distribution piston and sealed at both ends cylinder.Common Stirling engine with free piston is that gas distribution piston bar forms through power piston.Because gas distribution piston and gas distribution piston bar are hollow, the lower end of bar is opened wide, so form buffer cavity together with the volume of cylinder of gas distribution piston inside and power piston below, becomes a gas spring, makes gas distribution piston return.Gas distribution piston head is expansion chamber, is compression chamber between gas distribution piston and power piston, and expansion chamber and compression chamber are referred to as again active chamber.Between the inner casing of gas distribution piston cylinder and outer shell, long and narrow gap is respectively heating chamber, regenerator and cooler composition from right to left.Heater and cooler respectively with expansion chamber and compression chamber UNICOM.
Traditional Stirling engine with free piston adopts silk screen regenerator, and in its using process, easily sealing-off, chip come off, heat-transfer coefficient is not high.In addition, there is no gas disturbing flow device in traditional heating chamber, heating efficiency is not strong.These problems have all reduced the efficiency of free piston stirling engine, have increased the complexity of structure.What cooler adopted is water cooling tube shell-type cooling system, in the equipment that is not suitable for water-cooled, in astrovehicle, adopts the heat pipe radiation type of cooling to have important advantage.
summary of the invention:
The object of the invention is mainly to propose a kind ofly can overcome the problem that traditional Stirling engine with free piston water cooling tube shell-type cooling system brings and adopt heat pipe for thermal conductivity, and radiation screen is to the mode of space radiation heat radiation.
The free piston stirling engine that space radiation is cooling, comprises gas distribution piston cylinder and gas distribution piston, power piston cylinder and power piston, linear generating thermomechanical components successively; Described gas distribution piston cylinder comprises outside cylinder and inside cylinder, and the interlayer between outside cylinder and inside cylinder is made up of heating chamber, recuperative chamber and cooling chamber to bottom successively top; It is characterized in that: difference mounting heater and regenerator in heating chamber and recuperative chamber; Described heater be the porous material of integral foam as the disturbing flow device of strengthening gas and outside cylinder heat exchange, the porous material formation that described regenerator is integral foam; Described cooling chamber place is provided with annular heat pipe, and to be wherein arranged on the part in cooling chamber be evaporator section to annular heat pipe, and centre is thermal insulation section, and the part of stretching out outside cylinder is radiating segment or is condensating section; Annular heat pipe radiating segment is provided with radiation screen, and to carry out radiation cooling; Described radiation screen is rib structure.
The porous material that the present invention adopts integral foam as the heater of forced heat exchanging ground gas disturbing flow device and the porous material (as stainless steel, nickel and other refractory metal materials) of integral foam as regenerator, strengthen the heat exchange of working medium and heating chamber wall, improved the efficiency of heating surface.Annular heat pipe is taken the heat of Working medium gas out of, and annular heat pipe is connected in the floor as radiation screen on radiation screen, utilizes radiation to carry out cooling.Overcome the complicated occasion with being difficult to application of water-cooled.Therefore, this novel Stirling engine with free piston not only has advantages of the water-cooled of not needing, and it is high to have the efficiency of heating surface, thereby has the advantages such as high system thermal characteristics.
Brief description of the drawings
Fig. 1 is the structural drawing of the cooling Stirling engine with free piston of space radiation;
Number in the figure title: 1. outside cylinder, 2. heating chamber, 3. porous material heater, 4. recuperative chamber, 5. heat pipe, 6. radiation screen, 7. connecting flange, 8. gas distribution piston bar, 9. compression chamber, 10. bearing, 11. linear electric generators, 12. power piston bars, 13. power piston leaf springs, 14. gas distribution pistons, 15. regenerators, 16. inside cylinders, 17. cooling chambers, 18. power piston cylinders, 19. power pistons, 20. linear electric generator staor winding, 21. linear electric generator mover magnet, 22. linear electric generator shells, 23. gas distribution piston leaf springs.
Embodiment
Further illustrate the structure of novel Stirling engine with free piston of the present invention below in conjunction with Fig. 1.Gas distribution piston cylinder comprises outside cylinder 1 and inside cylinder 16, and the interlayer between outside cylinder 1 and inside cylinder 16 is made up of heating chamber 2, recuperative chamber 4 and cooling chamber 17 to bottom successively top; Described gas distribution piston 14 is seal-installed in inside cylinder 16, and inside cylinder 16 tops are hatch frame; Space between gas distribution piston 14 tops and outside cylinder 1 is heating chamber 2.The piston rod 8 of gas distribution piston 14 passes power piston bar 12, and connects in leaf spring 23.Leaf spring 23 is installed on generator casing 22.
Generator assembly comprises generator casing 22, power piston bar 12, linear electric generator mover magnet 21, linear electric generator stator coil winding 20; Wherein power piston bar 12 is supported on generator casing 22 by bearing 10, and power piston bar 12 upper ends are connected with power piston 19, and power piston bar 12 lower ends are connected with leaf spring 13; Linear electric generator mover magnet 21 is installed on power piston bar 12.
Interior when heated at heating chamber 2 when gas, be heated in the interior expansion of heating chamber 2, drive gas distribution piston 14 to the right toward compression chamber 9 directions motions, the gas working medium between compression gas distribution piston 14 and power piston 19; After gas distribution piston 14 moves to bottom of right side during due to its right-hand end, gas distribution piston leaf spring 23 produces elastic force left because of resiliently deformable, in the time that the elastic force that gas distribution piston leaf spring 23 produces is greater than the pressure in heating chamber 2, make gas distribution piston 14 left toward heating chamber 2 direction motions, move to the left-hand end of outside cylinder 1.When gas distribution piston 14 is during to left movement, portion gas is by heater 3, regenerator 15 and cooling chamber 17 in outside cylinder 1 and inside cylinder 16 interlayers, enters between gas distribution piston 14 and power piston 19 after cooling by radiation screen 6 radiation, gets back to again compression chamber 9.
When gas working medium in compression chamber 9 is compressed, gas working medium drives power piston 19 to move right; When power piston 19 moves to after low order end, power piston leaf spring 13 produces elastic force left because of resiliently deformable, when pressure within the elastic force that power piston leaf spring 13 produces is greater than compression chamber 9, make power piston 19 left toward the direction motion of compression chamber 9, move to the left-hand end of power piston cylinder 18.When power piston 19 is during to left movement, portion gas is reached in heating chamber 2 and expands after again heating by cooling chamber 17, regenerator 15 and heater 3 in outside cylinder 1 and inside cylinder 16 interlayers again, drive gas distribution piston 14 to the right toward compression chamber 9 direction motions, the interior gas of compression compression chamber 2.When power piston 19 moves to the high order end of its stroke, the interior gas effect in chamber 9 by compression, moves right once more, and the phase angle difference that itself and gas distribution piston 14 move is greatly about 60 degree left and right.
Gas distribution piston 14 and power piston 19 side-to-side movement in cylinder, make working gas in gas distribution piston outside cylinder and inside cylinder two cylinder interlayers and heating 2, compression chamber 9 in heat back and forth and expansion, cooling and compression.The to-and-fro motion of power piston 19, permanent magnet 21 to-and-fro motion in stator 11 on power piston bar 12, produces electric energy.Power piston bar 12 is supported by bearing 10.Linear electric generator 11 and power piston bar 12 are fixed on generator casing 22.
Claims (1)
1. the cooling free piston stirling engine of space radiation, comprises gas distribution piston cylinder and gas distribution piston (14), power piston cylinder (18) and power piston (19), linear generating thermomechanical components successively; Described gas distribution piston cylinder comprises outside cylinder (1) and inside cylinder (16), and the interlayer between outside cylinder (1) and inside cylinder (16) is made up of heating chamber (2), recuperative chamber (4) and cooling chamber (17) to bottom successively top; It is characterized in that: difference mounting heater (3) and regenerator (15) in heating chamber (2) and recuperative chamber (4); The porous material that described heater (3) is integral foam is as the disturbing flow device of strengthening gas and outside cylinder (1) heat exchange, and the porous material that described regenerator (15) is integral foam forms; Described cooling chamber (17) locates to be provided with annular heat pipe (5), and to be wherein arranged on the part in cooling chamber be evaporator section to annular heat pipe (5), and centre is thermal insulation section, and the part of stretching out outside cylinder (1) is radiating segment or is condensating section; Annular heat pipe (5) radiating segment is provided with radiation screen (6), and to carry out radiation cooling; Described radiation screen (6) is rib structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149718.7A CN103953456A (en) | 2014-04-15 | 2014-04-15 | Spatial radiation-cooled free-piston Stirling engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149718.7A CN103953456A (en) | 2014-04-15 | 2014-04-15 | Spatial radiation-cooled free-piston Stirling engine |
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| CN103953456A true CN103953456A (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410149718.7A Pending CN103953456A (en) | 2014-04-15 | 2014-04-15 | Spatial radiation-cooled free-piston Stirling engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225715A (en) * | 2015-08-24 | 2016-01-06 | 中国科学院合肥物质科学研究院 | A kind of trunk type nuclear energy power generation device based on Stirling cycle |
| CN107762660A (en) * | 2017-11-27 | 2018-03-06 | 品孚罗特过滤设备（北京）有限公司 | Backheat structure and the Stirling engine for including the backheat structure |
| CN111968765A (en) * | 2020-08-22 | 2020-11-20 | 西安交通大学 | Liquid nuclear fuel heat pipe reactor power supply system and method adopting Stirling cycle |
| CN112012846A (en) * | 2019-05-31 | 2020-12-01 | 中国科学院理化技术研究所 | Free piston Stirling engine |
| CN112204241A (en) * | 2018-03-07 | 2021-01-08 | 马斯通公司 | Stirling engine comprising cooling pipes on the working cylinder |
| CN112985132A (en) * | 2021-03-05 | 2021-06-18 | 太原理工大学 | Gravity heat pipe device for Stirling power generation and forced convection heat dissipation |
| CN114576033A (en) * | 2022-03-09 | 2022-06-03 | 东南大学 | Device for waste rock hill accumulated temperature treatment and heat energy and wind energy cooperative power generation and heat dissipation |
Citations (5)
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| KR100313995B1 (en) * | 1997-12-02 | 2001-12-28 | 구자홍 | Device for preventing frost in free piston stirling cooler |
| US20040163388A1 (en) * | 2003-02-19 | 2004-08-26 | Twinbird Corporation | Stirling cycle engine |
| CN2926522Y (en) * | 2006-06-22 | 2007-07-25 | 林保龙 | Heat power equipment |
| CN103032202A (en) * | 2012-12-05 | 2013-04-10 | 江苏尚森太阳能科技发展有限公司 | Stirling engine |
| CN203374354U (en) * | 2013-05-20 | 2014-01-01 | 上海电力学院 | Active type heat pipe cooling device for Stirling engine cooler |
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2014
- 2014-04-15 CN CN201410149718.7A patent/CN103953456A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100313995B1 (en) * | 1997-12-02 | 2001-12-28 | 구자홍 | Device for preventing frost in free piston stirling cooler |
| US20040163388A1 (en) * | 2003-02-19 | 2004-08-26 | Twinbird Corporation | Stirling cycle engine |
| CN2926522Y (en) * | 2006-06-22 | 2007-07-25 | 林保龙 | Heat power equipment |
| CN103032202A (en) * | 2012-12-05 | 2013-04-10 | 江苏尚森太阳能科技发展有限公司 | Stirling engine |
| CN203374354U (en) * | 2013-05-20 | 2014-01-01 | 上海电力学院 | Active type heat pipe cooling device for Stirling engine cooler |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225715A (en) * | 2015-08-24 | 2016-01-06 | 中国科学院合肥物质科学研究院 | A kind of trunk type nuclear energy power generation device based on Stirling cycle |
| CN105225715B (en) * | 2015-08-24 | 2017-12-19 | 中国科学院合肥物质科学研究院 | A kind of trunk type nuclear energy power generation device based on Stirling cycle |
| CN107762660A (en) * | 2017-11-27 | 2018-03-06 | 品孚罗特过滤设备（北京）有限公司 | Backheat structure and the Stirling engine for including the backheat structure |
| CN107762660B (en) * | 2017-11-27 | 2024-05-14 | 品孚罗特过滤设备（北京）有限公司 | Heat returning structure and Stirling engine comprising same |
| CN112204241A (en) * | 2018-03-07 | 2021-01-08 | 马斯通公司 | Stirling engine comprising cooling pipes on the working cylinder |
| CN112204241B (en) * | 2018-03-07 | 2023-11-10 | 马斯通公司 | Stirling engine comprising a cooling tube on the working cylinder |
| CN112012846A (en) * | 2019-05-31 | 2020-12-01 | 中国科学院理化技术研究所 | Free piston Stirling engine |
| CN111968765A (en) * | 2020-08-22 | 2020-11-20 | 西安交通大学 | Liquid nuclear fuel heat pipe reactor power supply system and method adopting Stirling cycle |
| CN112985132A (en) * | 2021-03-05 | 2021-06-18 | 太原理工大学 | Gravity heat pipe device for Stirling power generation and forced convection heat dissipation |
| CN112985132B (en) * | 2021-03-05 | 2022-10-25 | 太原理工大学 | Gravity heat pipe device for Stirling power generation and forced convection heat dissipation |
| CN114576033A (en) * | 2022-03-09 | 2022-06-03 | 东南大学 | Device for waste rock hill accumulated temperature treatment and heat energy and wind energy cooperative power generation and heat dissipation |
| CN114576033B (en) * | 2022-03-09 | 2024-04-26 | 东南大学 | Waste dump temperature control and heat energy and wind energy cooperative power generation and heat dissipation device |
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Application publication date: 20140730 |