CN105066082A - Solar heat storage steam generator - Google Patents

Solar heat storage steam generator Download PDF

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Publication number
CN105066082A
CN105066082A CN201510468294.5A CN201510468294A CN105066082A CN 105066082 A CN105066082 A CN 105066082A CN 201510468294 A CN201510468294 A CN 201510468294A CN 105066082 A CN105066082 A CN 105066082A
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CN
China
Prior art keywords
heat
steam generator
phase change
solar energy
storage
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CN201510468294.5A
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Chinese (zh)
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CN105066082B (en
Inventor
李石栋
梁琦
叶家万
凌伯杰
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广东石油化工学院
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Publication of CN105066082A publication Critical patent/CN105066082A/en
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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

Abstract

The invention discloses a solar heat storage steam generator. A shell of the steam generator is composed of an upper end cover, a drum and a lower end cover. A water inlet is formed in the drum. A steam outlet is formed in the upper end cover. Molten salt heat exchange pipes are arranged in the lower middle of the steam generator. Inlet and outlet openings of the molten salt heat exchange pipes are connected with an inlet and outlet opening of a solar paraboloid groove type molten salt heat collector. A middle phase change latent heat material packaging layer is arranged in the position, corresponding to the upper surfaces of the molten salt heat exchange pipes, in the middle of the steam generator, and a bottom phase change latent heat material packaging layer is arranged in the position, corresponding to the lower surfaces of the molten salt heat exchange pipes, at the bottom of the steam generator. The middle phase change latent heat material packaging layer is composed of an upper sealing plate, a lower sealing plate, heat exchange pipes and middle phase change latent heat materials, wherein the upper sealing plate and the lower sealing plate are provided with through holes; the heat exchange pipes are welded between the corresponding through holes of the two sealing plates, and the space defined by the upper sealing plate, the lower sealing plate, the heat exchange pipelines and the drum is filled with the middle phase change latent heat materials. According to the solar heat storage steam generator, molten salt is used for replacing heat conduction oil to transfer heat, so that cost is reduced; and in addition, the characteristic that the temperature is unchanged in the phase change process is utilized so that the temperature of generated steam is stable, the influences of solar radiation are reduced, and automatic control over a branch circuit of a system is relieved.

Description

A kind of solar energy heat-storage steam generator

Technical field

The present invention relates to a kind of steam generator, is a kind of solar energy heat-storage steam generator specifically, particularly relates to and utilizes sensible heat and latent heat mixing heat accumulation mode to store solar energy to produce the steam generator of steam in middle high-temperature solar application.

Background technology

Heat-storage technology is the key that in solar energy, high-temperature hot utilizes, and steam generator can be made to produce continuous print steam, overcome discontinuity, unstability etc. that solar energy uses.Heat-storage technology is divided into sensible heat heat accumulation and latent heat heat accumulation etc.

In known technology, the Chinese patent application of number of patent application 201110049637.6 discloses a kind of solar energy thermal-power-generating heat accumulation evaporation integral device, and the high temperature concrete that the Chinese patent application of number of patent application 201110096656.4 discloses a kind of direct steam generation goes out thermal storage device.And the Chinese patent application of number of patent application 200810198461.9 and number of patent application 200910193410.1 individually discloses molten salt sleeve pipe type, molten salt tube-shell type steam generating device and method, be all utilize explicit heat accumulation in above known technology.And utilize explicit heat accumulation at present, as conduction oil, fused salt etc., its shortcoming is that storage density is not high, and thermal conductivity factor is also smaller, and the undesirable cost of heat-transfer effect is also higher.In conduction oil paraboloid trough type solar system, heat accumulation equipment and steam generator separate, the pipeline more complicated that such system needs, and equipment is also many, and thus cost is high, heat loss is large.

Summary of the invention

The object of this invention is to provide the solar energy heat-storage steam generator that a kind of compact conformation, cost are low, utilize sensible heat and latent heat mixing heat accumulation.

A kind of solar energy heat-storage steam generator provided by the invention, the housing of this steam generator is by upper end cover, drum, bottom end cover forms, drum is provided with water inlet, upper end cover there is steam (vapor) outlet, the position, middle and lower part of this steam generator is provided with fuse salt heat exchanger tube, the import and export of fuse salt heat exchanger tube are connected with the import and export of solar energy paraboloid trough type fuse salt heat collector respectively, at the medium position of this steam generator, middle part latent heat of phase change material package layer is provided with above corresponding fuse salt heat exchanger tube, at the bottom position of this steam generator, bottom latent heat of phase change material package layer is provided with below corresponding fuse salt heat exchanger tube, wherein, middle part latent heat of phase change material package layer is by having the upper of through hole, descend two shroudings and the heat exchange pipeline be welded between through hole corresponding to two shroudings and be filled in, lower two shroudings, the middle part latent heat of phase change material in the space that heat exchange pipeline and drum surround is formed.

In above-mentioned, on drum, in the middle part of correspondence, latent heat of phase change material package layer position is provided with phase-change heat-storage material and fills mouth and phase-change heat-storage material outlet.

In above-mentioned, on drum, bottom correspondence, latent heat of phase change material package layer position is provided with hand hole.

In above-mentioned, the bottom latent heat of phase change material in the latent heat of phase change material package layer of bottom is ball-type or rectangle.

In above-mentioned, in drum, above corresponding hand hole position, be provided with the dividing plate that interval has through hole.

In above-mentioned, inside upper end cover, corresponding steam (vapor) outlet position is provided with steam plate washer.

In above-mentioned, water inlet is arranged on above the latent heat of phase change material package layer of middle part.

In above-mentioned, relief valve connection, thermometer boss, pressure tap are stamped in upper end.

In above-mentioned, drum there is interface on manhole, liquid level gauge lower interface and liquid level gauge.

In above-mentioned, bottom bottom end cover, there is sewage draining exit.

Operation principle of the present invention is: solar energy is melted fuse salt heating by solar energy paraboloid trough type fuse salt heat collector, the phase-change heat-storage material of high-temperature fusion salt inside steam generator in heating water and middle part latent heat of phase change material package layer and bottom latent heat of phase change material package layer, phase-change heat-storage material gets up heat storage, and water then continues vaporization and produces the water vapour of certain pressure in the large space of steam generator top.When to certain pressure, steam valve is opened, and steam is discharged.Water compensating valve is according to the reduction of water level simultaneously, and carry out moisturizing by water inlet, steam produces continuously.

The present invention has following feature:

The heat accumulation mode adopted is the mode of sensible heat and latent heat mixing heat accumulation.Utilize fuse salt as heat-transfer fluid and sensible heat heat-storage medium, phase-change heat-storage material is as latent heat heat-storage medium, and the fusing point of phase-change heat-storage material is at 200 DEG C-500 DEG C, and latent heat is at 200kJ/kg-500kJ/kg.

At medium position and the bottom position of this steam generator, be provided with middle part latent heat of phase change material package layer and bottom latent heat of phase change material package layer.

The heat exchange mode adopted is immersion type heat exchange, and which is different from the heat exchange mode of water in pipe, and its advantage has large space, then Auxiliary Steam-water separator, is conducive to the mass dryness fraction improving steam, improves the quality of steam.Be conducive to the exothermal effect of phase-change heat-storage material to water simultaneously, when not high thermal conductivity factor, also can have reasonable heat exchange.

Do not having the weather such as solar radiation, the steam production meeting certain hour also can be provided, realizing continuous steam supply or heating.Phase-change heat-storage material latent heat heat accumulation in the present invention, its phase transition temperature is relatively milder, and the temperature of the water vapour of generation can be made to stablize more gently.

The present invention utilizes fuse salt to replace heat-conducting oil, reduces cost, and the feature utilizing phase transition process temperature-resistant, make the temperature of generating steam more stable, reduce the impact of solar radiation, the Automated condtrol of mitigation system branch road.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is the schematic perspective view after middle part of the present invention latent heat of phase change material package layer removes latent heat of phase change material.

Detailed description of the invention

See figures.1.and.2, a kind of solar energy heat-storage steam generator provided by the invention, the housing of this steam generator is made up of upper end cover 1, drum 2, bottom end cover 10, upper end cover there are steam (vapor) outlet 19, relief valve connection 20, thermometer boss 17, pressure tap 18, inside upper end cover 1, corresponding steam (vapor) outlet 19 position is provided with steam plate washer 21, steam plate washer 21 under the globule shelves carried in steam, can improve the quality of steam (vapor) outlet 1 steam.Wherein, relief valve connection 2 connection safety valve, when steam pressure is too high, exhaust step-down opened by safety valve, plays a protective role; Thermometer boss 17 connects thermometer, can detect the temperature of steam; Pressure tap 18 Bonding pressure table, detects the pressure of steam.Drum 2 is provided with interface 16 on water inlet 4, manhole 3, liquid level gauge lower interface 15 and liquid level gauge, wherein, water is introduced the inside by water inlet 4, or carry out moisturizing according to the reduction of water level, manhole 3 is used to enter the inside for people and keeps in repair, and on liquid level gauge lower interface 15 and liquid level gauge, interface 16 is used for installing liquid level gauge.Have bearing, sewage draining exit bottom bottom end cover, the Main Function of bearing supports and fixes this steam generator, and sewage draining exit 11 welds with bearing, and Main Function is emptied of water and dirt.

The position, middle and lower part of this steam generator is provided with fuse salt heat exchanger tube 7, the import and export of fuse salt heat exchanger tube 7 are connected with the import and export of solar energy paraboloid trough type fuse salt heat collector 22 respectively, the outlet of solar energy paraboloid trough type fuse salt heat collector 22 is provided with melting salt pump 23, at the medium position of this steam generator, middle part latent heat of phase change material package layer is provided with above corresponding fuse salt heat exchanger tube 7, at the bottom position of this steam generator, bottom latent heat of phase change material package layer is provided with below corresponding fuse salt heat exchanger tube 7, wherein, middle part latent heat of phase change material package layer is by having the upper of through hole, lower two shroudings 24 and be welded on two shrouding 24 correspondences through hole between heat exchange pipeline 5 and be filled in, lower two shroudings 24, the middle part latent heat of phase change material 6 in the space that heat exchange pipeline 5 and drum 2 surround is formed, on drum 2, latent heat of phase change material package layer position, corresponding middle part is provided with phase-change heat-storage material and fills mouth 14 and phase-change heat-storage material outlet 13, bottom latent heat of phase change material package layer is filled with bottom latent heat of phase change material 9, on drum 2, latent heat of phase change material package layer position, corresponding bottom is provided with hand hole 12, in drum 2, the dividing plate 8 that interval has through hole is provided with above corresponding hand hole 12 position, the effect of dividing plate 8 is bottoms bottom latent heat of phase change material 9 being isolated in steam generator, bottom latent heat of phase change material 9 in the latent heat of phase change material package layer of bottom is ball-type.

In above-mentioned, water inlet 4 is arranged on above the latent heat of phase change material package layer of middle part.

With reference to Fig. 1, the course of work of the present invention is as follows:

In the present invention, molten heat transmission heating process.Fuse salt is heated to 400 DEG C-550 DEG C by heat build-up in solar energy paraboloid trough type fuse salt heat collector 29, by melting salt pump 23, fuse salt is transported to fuse salt heat exchanger tube 7, by fuse salt heat exchanger tube 7, heat is passed to the water of steam generator inside.

In the present invention, steam generation process.Fuse salt is heated water by fuse salt heat exchanger tube 7, and water constantly heats up vaporization, up walks, steam is formed in the space on steam generator top, steam is separated by steam plate washer 21 carbonated drink again, goes out from steam (vapor) outlet 19, supply steam turbine power generation or heating or industrial etc.When solar radiation is not strong, fuse salt is when solar energy paraboloid trough type fuse salt heat collector 22 is inadequate by the temperature that heats, and the latent heat of middle part latent heat of phase change material 6 and bottom latent heat of phase change material 9 just continues feedwater heating produces steam.

In the present invention, heat accumulation and exothermic process.Along with the rising of water temperature, heat exchange is carried out with middle part latent heat of phase change material 6 and bottom latent heat of phase change material 9, unnecessary heat storage in the latent heat of middle part phase-change heat-storage material 6 and bottom latent heat of phase change material 9, otherwise, when water/vapor (steam) temperature is less than the temperature of middle part phase-change heat-storage material 6 and bottom latent heat of phase change material 9, the latent heat of middle part phase-change heat-storage material 6 and bottom latent heat of phase change material 9 just discharges, and makes the temperature stabilization of water/vapor (steam) temperature.

In the present invention, the filling of middle part latent heat of phase change material 6 and replacing: the middle part latent heat of phase change material 6 of liquid state is filled mouth 14 by phase-change heat-storage material and inserts in the latent heat of phase change material package layer of middle part, if when changing, first heating guarantees that middle part latent heat of phase change material 6 is in liquid state, open phase-change heat-storage material outlet 13, the phase-change material 10 of liquid state is discharged.

In the present invention, the filling of bottom latent heat of phase change material 9 and replacing: bottom latent heat of phase change material 9 is filled by hand hole 12, during replacing, by taking out bottom latent heat of phase change material 9 by hand hole 12 again.

The present invention also can go out add auxiliary thermal source device at the outside entrance of solar energy paraboloid trough type fuse salt heat accumulation steam generator.

Claims (10)

1. a solar energy heat-storage steam generator, the housing of this steam generator is by upper end cover, drum, bottom end cover forms, drum is provided with water inlet, upper end cover there is steam (vapor) outlet, it is characterized in that, the position, middle and lower part of this steam generator is provided with fuse salt heat exchanger tube, the import and export of fuse salt heat exchanger tube are connected with the import and export of solar energy paraboloid trough type fuse salt heat collector respectively, at the medium position of this steam generator, middle part latent heat of phase change material package layer is provided with above corresponding fuse salt heat exchanger tube, at the bottom position of this steam generator, bottom latent heat of phase change material package layer is provided with below corresponding fuse salt heat exchanger tube, wherein, middle part latent heat of phase change material package layer is by having the upper of through hole, descend two shroudings and the heat exchange pipeline be welded between through hole corresponding to two shroudings and be filled in, lower two shroudings, the middle part latent heat of phase change material in the space that heat exchange pipeline and drum surround is formed.
2. a kind of solar energy heat-storage steam generator according to claim 1, is characterized in that, on drum, in the middle part of correspondence, latent heat of phase change material package layer position is provided with phase-change heat-storage material and fills mouth and phase-change heat-storage material outlet.
3. a kind of solar energy heat-storage steam generator according to claim 1, is characterized in that, on drum, bottom correspondence, latent heat of phase change material package layer position is provided with hand hole.
4. a kind of solar energy heat-storage steam generator according to claim 1, is characterized in that, the bottom latent heat of phase change material in the latent heat of phase change material package layer of bottom is ball-type or rectangle.
5. a kind of solar energy heat-storage steam generator according to claim 3, is characterized in that, in drum, above corresponding hand hole position, be provided with the dividing plate that interval has through hole.
6. a kind of solar energy heat-storage steam generator according to claim 1, is characterized in that, inside upper end cover, corresponding steam (vapor) outlet position is provided with steam plate washer.
7. a kind of solar energy heat-storage steam generator according to claim 1, is characterized in that, water inlet is arranged on above the latent heat of phase change material package layer of middle part.
8. a kind of solar energy heat-storage steam generator according to claim 1, it is characterized in that, relief valve connection, thermometer boss, pressure tap are stamped in upper end.
9. a kind of solar energy heat-storage steam generator according to claim 1, is characterized in that, drum has interface on manhole, liquid level gauge lower interface and liquid level gauge.
10. a kind of solar energy heat-storage steam generator according to claim 1, is characterized in that there is sewage draining exit bottom bottom end cover.
CN201510468294.5A 2015-08-04 2015-08-04 A kind of solar energy heat-storage steam generator CN105066082B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105423258A (en) * 2015-12-24 2016-03-23 广东石油化工学院 Compound parabolic solar concentration type molten salt steam generator

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CN202675975U (en) * 2012-05-14 2013-01-16 深圳市中矿投资管理有限公司 Blending heat exchange energy storage tube shell type evaporator
CN202709835U (en) * 2012-07-23 2013-01-30 圣火科技(河南)有限责任公司 High-efficiency phase change heat storage device
CN202853442U (en) * 2012-09-14 2013-04-03 上海骄英能源科技有限公司 Combination type phase change heat storing device
GB2508809A (en) * 2012-11-20 2014-06-18 Gideon St Wan Kukard Solar steam generator using graphene foam
CN204026620U (en) * 2014-08-19 2014-12-17 天普新能源科技有限公司 A kind of solar steam heat storage boiler system
CN204829827U (en) * 2015-08-04 2015-12-02 广东石油化工学院 Sun energy reserve heat recovery steam generator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2898715Y (en) * 2006-04-03 2007-05-09 安新人 Optical electromechanical integrated heater
CN1844789A (en) * 2006-04-21 2006-10-11 南京工业大学 Method and apparatus for employing human feces methane and solar energy as energy source of combined heat and power system
CN101354126A (en) * 2007-07-27 2009-01-28 常州能源设备总厂有限公司 Coil tube type steam generation apparatus
CN102537912A (en) * 2012-02-29 2012-07-04 江苏太阳宝新能源有限公司 Method and system for generating high-temperature sterilized steam by using solar thermal and molten salt storage energy
CN202675975U (en) * 2012-05-14 2013-01-16 深圳市中矿投资管理有限公司 Blending heat exchange energy storage tube shell type evaporator
CN202709835U (en) * 2012-07-23 2013-01-30 圣火科技(河南)有限责任公司 High-efficiency phase change heat storage device
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GB2508809A (en) * 2012-11-20 2014-06-18 Gideon St Wan Kukard Solar steam generator using graphene foam
CN204026620U (en) * 2014-08-19 2014-12-17 天普新能源科技有限公司 A kind of solar steam heat storage boiler system
CN204829827U (en) * 2015-08-04 2015-12-02 广东石油化工学院 Sun energy reserve heat recovery steam generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105423258A (en) * 2015-12-24 2016-03-23 广东石油化工学院 Compound parabolic solar concentration type molten salt steam generator

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Effective date of registration: 20190131

Address after: 525345 Dakeng Diameter Fruit Farm, Dingburg Town, Xinyi City, Maoming City, Guangdong Province

Patentee after: Xinyi Guoshi Honey Industry Co., Ltd.

Address before: 525000 courtyard No. 139, Guandu, Maoming, Maoming, Guangdong

Patentee before: Guangdong University of Petrochemical Technology

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Effective date of registration: 20190315

Address after: 525000 courtyard No. 139, Guandu, Maoming, Maoming, Guangdong

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Address before: 525345 Dakeng Diameter Fruit Farm, Dingburg Town, Xinyi City, Maoming City, Guangdong Province

Patentee before: Xinyi Guoshi Honey Industry Co., Ltd.