CN102705188B - Solar energy-gas complementary generating device and method - Google Patents

Solar energy-gas complementary generating device and method Download PDF

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Publication number
CN102705188B
CN102705188B CN201210161575.2A CN201210161575A CN102705188B CN 102705188 B CN102705188 B CN 102705188B CN 201210161575 A CN201210161575 A CN 201210161575A CN 102705188 B CN102705188 B CN 102705188B
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heat
heat absorber
solar energy
gas
absorber
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CN102705188A (en
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蒲文灏
韩东
岳晨
鹿鹏
陈慧
郭新贤
焦玮琦
申耀阳
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

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Abstract

The invention discloses a solar energy-gas complementary generating device and a generating method, which belongs to the solar thermal generating field. The device comprises a heat absorber, an auxiliary heating burner, and a Stirling engine. The solar energy-gas complementary generating device is characterized in that the solar energy absorbing rate of the heat absorber can be ensured while the solar energy is used; the burning can be steadily implemented while the gas is used for the auxiliary heating so as to ensure the continuity of generation; or the solar heat absorber and the gas are used at the same time, so that the heating tube in the inner part of the heat absorber can absorb the heat produced at burning while receiving the solar energy, and the reliability of the generating system can be improved while the solar energy is insufficient. The solar energy-gas complementary generating device provided by the invention further has the advantages of high utilization rate, impact structure and reliable operation, can not only suitable for the improvement of structure performance of the current disc type solar Stirling thermal generating system, but also provide continuous and steady high-quality electricity for the disc type solar Stirling thermal generating system.

Description

Solar energy-gas complementary type electricity generating device and method
Technical field
The present invention relates to a kind of solar energy-gas complementary type electricity generating device and method, belong to solar energy thermal-power-generating field.
Background technique
Disc type solar energy Stirling heat generating system is by solar light focusing and reflexes on the heating surface of Stirling-electric hybrid, and the working medium of Stirling-electric hybrid inside is heated becomes the high-efficiency operation that high-temperature high-pressure state guarantees dish formula Stirling heat generating system.But due to randomness and the unstability of solar energy, make disc type solar energy Stirling system that high-quality electric energy can not be provided continuously and stably, and the stability that adopts solar energy-gas compensating generator to maintain generating is a kind of approach.This approach is not changing on the basis of original system heat absorber structure, can also solve problem continuous, stable electric generation.
Number of patent application is that the utility model patent in 02293526.6 discloses a kind of solar energy-gas hybrid type heat absorber structure, referring to Fig. 1, this invention is comprised of three parts: A is burner part, and B is pot type heat absorber part, and C is Stirling engine part.It is characterized in that at heat absorber heat-absorbent surface, at welding fin and current stabilization rod, gas nozzle being installed on gas pipeline.This invention is for indirect receiving type heat absorber, although receiving type heat absorber, by sodium steam indirect heat transfer, has good isothermal indirectly, has increased the complexity of system.The heat absorber adopting in our practical application is direct irradiation formula, and direct irradiation formula has simple in structure, easy processing and advantage with low cost.And the layout such as the pipeline of this invention burner and nozzle to realize difficulty large, dismounting maintenance difficulty.
Summary of the invention
The present invention is directed in solar energy-gas hybrid type heat absorber and in complex structure and burner arrangement, realize the deficiency of the aspects such as difficulty is large about indirect illuminaton, propose a kind of novel solar energy-gas complementary type electricity generating device and method.
A complementary type electricity generating device, comprises heat absorber, Stirling engine and for the burner of auxiliary heating, it is characterized in that: above-mentioned heat absorber by thering is the heat absorber insulation shell of aperture, the heating pipe that is positioned at heat absorber forms; Above-mentioned heating pipe is comprised of some independent heating pipes along circumferentially evenly arranging, each independent heating pipe is comprised of upper pipeline section and lower tube section, wherein heat absorber mainly utilizes the upper pipeline section upper surface of heating pipe to absorb solar radiation heat, mainly utilizes lower tube section outer side surface to absorb burning and produces heat; Wherein going up pipeline section and lower tube section joint, to be spiral staggered, makes that the lower surface of pipeline section in heat absorber utilization is auxiliary to be absorbed burning and produce heat, utilizes the auxiliary solar radiation heat that absorbs of inner side surface of lower tube section; Said burner comprises air intake duct, gas inlet pipe, igniter, firing chamber, and wherein air intake duct is connected with one end of firing chamber after collecting with gas inlet pipe, and this burner also comprises the secondary air suction tude communicating with firing chamber; Firing chamber is connected with heat absorber by smoke inlet pipe, and wherein smoke inlet pipe adopts annular array to be arranged in the surrounding of heat absorber; In above-mentioned heat absorber, be also furnished with for monitoring heat absorber inside temperature and controlling secondary air air inflow to guarantee the thermocouple of stable output power by control valve.
The electricity-generating method of described solar energy-gas complementary type electricity generating device, it is characterized in that comprising following process: (1), heat absorber receive solar radiation heat and the burning of converging and produce heat, mainly utilize the upper pipeline section upper surface of heating pipe to absorb solar radiation heat, mainly utilize lower tube section outer side surface to absorb burning and produce heat; Wherein going up pipeline section and lower tube section joint, to be spiral staggered, makes that the lower surface of pipeline section in heat absorber utilization is auxiliary to be absorbed burning and produce heat, utilizes the auxiliary solar radiation heat that absorbs of inner side surface of lower tube section; (2), air and combustion gas enter firing chamber by air intake duct and gas inlet pipe respectively, by igniter ignition, the high-temperature flue gas generating enters heat absorber by smoke inlet pipe, and smoke inlet pipe adopts annular array to be arranged in the surrounding of heat absorber, can make heat exchange more abundant; (3), be also placed with for monitoring the thermocouple of heat absorber inside temperature in heat absorber, by the temperature value of thermocouple, control secondary air suction tude air inflow to guarantee stable output power.(4), utilize above-mentioned heat absorber (A) to receive the solar radiation heat converging and the generation heat that burns drive Stirling engine (B) generating simultaneously.
The solar energy-gas hybrid type electricity generating device of the present invention's design is for most of adopted direct irradiation formula heat absorbers in practical application, and the heat that utilizes solar energy or burning to produce promotes Stirling engine generating.Under pure solar energy heating, solar energy-gas complementation and three kinds of different working modes of pure combustion gas, make equally the working medium heat absorption of heat absorber internal heater.Overall structure of the present invention is simple, easy processing, and the design of burner is also more flexible, detachable.Therefore the present invention is applicable to the transformation of the structural behaviour of existing disc type solar energy Stirling heat generating system heat absorber, for this system provides continuous, stable high-quality electric energy.The overall discoid layout of heating pipe can stop on the low-quality flue gas after heat exchange and alter when increasing heat exchange area, and its lower wall surface flue gas exhaust pipe from heat absorber is discharged.Smoke inlet pipe adopts annular array to be arranged in the surrounding of heat absorber, can make like this flue gas and heating pipe heat exchange more abundant, thereby improve overall hot generating efficiency.Conventionally because the flue-gas temperature and the Salar light-gathering temperature that produce are higher; the secondary air suction tude communicating by firing chamber; in flue gas incoming flow, blending cool air reduces the hot flue-gas temperature entering in heat absorber, in case the localized heat stress of heating pipe is larger, and protection heating pipe.
Accompanying drawing explanation
Fig. 1 is the disclosed solar energy-gas hybrid type of Chinese patent (02293526.6) heat absorber schematic diagram;
Fig. 2 is the solar energy-gas complementary type electricity generating device schematic diagram that this patent proposes;
Number in the figure title: 1. air intake duct, 2. secondary air suction tude, 3. gas inlet pipe, 4. firing chamber, 5. igniter, 6. smoke inlet pipe, 7. insulation shell, 8. flue gas exhaust pipe, 9. incident sunlight, 10. aperture, 11. thermocouples, 12. heating pipes, A. heat absorber, B. Stirling engine, C. burner;
Fig. 3 is the structural representation of the interior heating pipe of solar energy-gas complementary type electricity generating device of this patent proposition;
Fig. 4 be this patent propose the combustion gas of solar energy-gas complementary type electricity generating device time intake method arrange plan view.
Embodiment
With reference to accompanying drawing, the invention provides a kind of solar energy-gas hybrid type electricity generating device.This heat absorber device is comprised of three parts: heat absorber A, Stirling engine B and for the burner C of auxiliary heating.Under pure solar energy heating, solar energy-gas complementation and three kinds of different working modes of pure combustion gas, the working principle of heat absorber A is identical, larger in intensity of solar radiation, meet in most situations of normal operation, heat absorber A absorbs the sunlight 9 from dish-shaped parabolic concentrator type focusing mirror, and the solar energy of focusing is passed to the heating pipe 12 being arranged in heat absorber A, after the working medium heat absorption in heating pipe 12, promote Stirling engine B and externally do work; The sun covered or overcast and rainy pure gas heating condition under, burner C passes to Stirling engine B by the heat discharging after fuel gas buring by being arranged in heating pipe 12 in heat absorber A, promotes equally Stirling engine B and externally generates electricity.In solar energy deficiency or light intensity, change under the complementary operating conditions of solar energy-gas greatly, in heat absorber A, the upper pipeline section upper surface of heating pipe 12 absorbs solar radiation heat, mainly utilizes lower tube section outer side surface to absorb burning and produces heat; Wherein going up pipeline section and lower tube section joint, to be spiral staggered, make the auxiliary burning generation heat that absorbs of lower surface of pipeline section in heat absorber A utilization, the auxiliary solar radiation heat that absorbs of inner side surface that utilizes lower tube section, the Double-side Heating of heating pipe 12 can suitably solve the large problem of localized heat stress causing due to local heating.
When light intensity changes, by suitable control system, carry out the power of control combustion device C internal combustion, and arrange thermocouple 11 at heat absorber A wall, by the inside temperature of monitoring heat absorber, control the ratio of secondary air inlet, to guarantee the continuous and stable of output power.
Solar energy-gas hybrid type electricity generating device overall structure is simple, the design of burner is detachable, and also flexibly and can under three kinds of different working modes, work, applicability is wide.Therefore the present invention is applicable to the transformation of the structural behaviour of existing disc type solar energy Stirling heat generating system, for this system provides continuous, stable high-quality electric energy.

Claims (2)

1. a solar energy-gas complementary type electricity generating device, comprises heat absorber (A), Stirling engine (B) and for the burner (C) of auxiliary heating, it is characterized in that:
Above-mentioned heat absorber (A) by thering is the heat absorber insulation shell (7) of aperture (10), the heating pipe (12) that is positioned at heat absorber forms; Above-mentioned heating pipe (12) is comprised of some independent heating pipes along circumferentially evenly arranging, and each independent heating pipe is comprised of upper pipeline section and lower tube section, overall discoid layout; Wherein heat absorber (A) mainly utilizes the upper pipeline section upper surface of heating pipe (12) to absorb solar radiation heat, mainly utilizes lower tube section outer side surface to absorb burning and produces heat; Wherein going up pipeline section and lower tube section joint, to be spiral staggered, makes that the lower surface of pipeline section in heat absorber (A) utilization is auxiliary to be absorbed burning and produce heat, utilizes the auxiliary solar radiation heat that absorbs of inner side surface of lower tube section;
Said burner (C) comprises air intake duct (1), gas inlet pipe (3), igniter (5), firing chamber (4), wherein air intake duct (1) collects afterwards and is connected with the one end of firing chamber (4) with gas inlet pipe (3), and this burner (C) also comprises the secondary air suction tude (2) communicating with firing chamber (4); Firing chamber (4) is connected with heat absorber (A) by smoke inlet pipe (6), and wherein smoke inlet pipe (6) adopts annular array to be arranged in the surrounding of heat absorber (A);
In above-mentioned heat absorber (A), be also furnished with for monitoring heat absorber inside temperature and controlling secondary air air inflow to guarantee the thermocouple (11) of stable output power by control valve.
2. the electricity-generating method of solar energy-gas complementary type electricity generating device according to claim 1, is characterized in that comprising following process:
(1), heat absorber (A) receives solar radiation heat and the burning converge and produces heat, mainly utilizes the upper pipeline section upper surface of heating pipe (12) to absorb solar radiation heat, mainly utilize lower tube section outer side surface to absorb burning and produce heat; Wherein going up pipeline section and lower tube section joint, to be spiral staggered, makes that the lower surface of pipeline section in heat absorber (A) utilization is auxiliary to be absorbed burning and produce heat, utilizes the auxiliary solar radiation heat that absorbs of inner side surface of lower tube section;
(2), air and combustion gas enter firing chamber (4) by air intake duct (1) and gas inlet pipe (3) respectively, by igniter (5) ignition, the high-temperature flue gas generating enters heat absorber (A) by smoke inlet pipe (6), smoke inlet pipe (6) adopts annular array to be arranged in the surrounding of heat absorber (A), can make heat exchange more abundant;
(3), be also placed with the thermocouple (11) for monitoring heat absorber inside temperature in heat absorber (A), by the temperature value of thermocouple (11), control secondary air suction tude (2) air inflow to guarantee stable output power;
(4), utilize above-mentioned heat absorber (A) to receive the solar radiation heat converging and the generation heat that burns drive Stirling engine (B) generating simultaneously.
CN201210161575.2A 2012-05-23 2012-05-23 Solar energy-gas complementary generating device and method Expired - Fee Related CN102705188B (en)

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EP2909545B1 (en) * 2012-10-18 2018-08-08 Thermolift Inc. Combination solar and combustion heater
CN106089612B (en) * 2016-08-08 2018-09-07 浙江大学 A kind of rotating jet flow device, Stirling engine and the operation method of characteristic absorption spectrum
CN108375212B (en) * 2016-10-25 2021-03-02 玉环未涞流体科技有限公司 Heat collecting tube for heat collection of disc type solar reflector
CN106762490A (en) * 2017-02-23 2017-05-31 宁波华斯特林电机制造有限公司 A kind of device of solar generating with Stirling motor concentration structure
CN109441658B (en) * 2018-12-29 2023-12-05 杭州英洛威能源技术有限公司 Phosgene complementary type heat absorber based on Stirling heat engine
CN110230891B (en) * 2019-03-12 2024-01-23 华电电力科学研究院有限公司 Dish type solar power generation comprehensive energy utilization system based on secondary condensation and operation method thereof
CN110906572B (en) * 2019-12-19 2024-07-09 西安交通大学 Photo-thermal torch tower with complementary combustible gas chemical energy and solar energy
CN115075979B (en) * 2022-03-09 2023-09-22 长沙理工大学 Stirling engine heater

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JPS6357856A (en) * 1986-08-29 1988-03-12 Aisin Seiki Co Ltd Heating device for stirling engine
JPH0719008A (en) * 1993-06-30 1995-01-20 Aisin Seiki Co Ltd Heating device for stirling engine
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CN102162433B (en) * 2011-02-25 2012-08-29 浙江大学 Solar heat-storage power generating method with gas afterburning function and device thereof
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Inventor after: Pu Wenhao

Inventor after: Han Dong

Inventor after: Yue Chen

Inventor after: Lu Peng

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Inventor after: Guo Xinxian

Inventor after: Jiao Weiqi

Inventor after: Shen Yaoyang

Inventor before: Chen Hui

Inventor before: Pu Wenhao

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Free format text: CORRECT: INVENTOR; FROM: CHEN HUI PU WENHAO HAN DONG LU PENG YUE CHEN GUO XINXIAN JIAO WEIQI SHEN YAOYANG TO: PU WENHAO HAN DONG YUE CHEN LU PENG CHEN HUI GUO XINXIAN JIAO WEIQI SHEN YAOYANG

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