CN107218832A - There are the sandstone heat-storing method and its device on carbon heat conduction top layer - Google Patents

There are the sandstone heat-storing method and its device on carbon heat conduction top layer Download PDF

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Publication number
CN107218832A
CN107218832A CN201710585597.4A CN201710585597A CN107218832A CN 107218832 A CN107218832 A CN 107218832A CN 201710585597 A CN201710585597 A CN 201710585597A CN 107218832 A CN107218832 A CN 107218832A
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Prior art keywords
sandstone
heat
top layer
carbon
heat conduction
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CN201710585597.4A
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CN107218832B (en
Inventor
刘绍允
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Xi'an Zhong Yuan Mechanical Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0056Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0004Particular heat storage apparatus
    • F28D2020/0013Particular heat storage apparatus the heat storage material being enclosed in elements attached to or integral with heat exchange conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0078Heat exchanger arrangements
    • 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
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

Abstract

The present invention relates to a kind of sandstone heat-storing method and its device for having a carbon heat conduction top layer, described sandstone heat-storing method is to make the sandstone for having carbon heat conduction top layer filled with surface in closed container heat reservoir, graphite powder is filled with space between sandstone, described sandstone heat-storing device has a closed container for entering the mouth of pipe and outlet spout, the sandstone with carbon heat conduction top layer is filled with closed container, heat transfer fluid medium pipeline is distributed in the sandstone with carbon heat conduction top layer, and graphite powder is filled with the space between sandstone.The present invention makes carbon heat-conducting layer on sandstone top layer, change the heat conductivility of sandstone, it can be completed in a relatively short time and fill heat and heat release, so as to suitably reduce the density that fluid line is distributed in closed container heat reservoir, the resistance of ducting is reduced, the cost of aerodynamic power and heat accumulation engineering is reduced.

Description

There are the sandstone heat-storing method and its device on carbon heat conduction top layer
Technical field
The invention belongs to heat-storage technology field, it is related to a kind of sandstone heat-storing method and its device for having a carbon heat conduction top layer.
Background technology
It is always the pursuit of relevant technical worker as heat accumulating using sandstone cheap and easy to get in heat-storage technology field Target.But the thermal conductivity factor of sandstone is small, heat accumulating heat transfer is used it as slowly, therefore be accomplished by the big heat-transfer fluid of distribution density Medium pipeline, causes the power of fluid line resistance and delivery pump to increase therewith, causes the cost of heat accumulation engineering bigger than normal.
The content of the invention
It is an object of the invention to overcome prior art exist above mentioned problem, provide a kind of design rationally, be easy to Practice, the sandstone heat-storing method for having carbon top layer of heat accumulation construction costs can be reduced in the case where meeting heat accumulation demand And its device.
The technical solution used for achieving the above object is as described below.
It is of the present invention have carbon heat conduction top layer sandstone heat-storing method be characterized in:Filled out in closed container heat reservoir Filled with sandstone, being made on the surface of sandstone has in carbon heat conduction top layer, the space between sandstone filled with graphite powder, inside fills heat conduction The heat transfer fluid medium pipeline of oil or fused salt is distributed in the sandstone with carbon heat conduction top layer, heat transfer fluid medium pipeline and sandstone Heat exchange is carried out, completion fills heat and heat release, inertia nitrogen carrier of oxygen is filled in the space on closed container heat reservoir top.Due to carbon The thermal conductivity factor of element is higher than more than 60 times of sandstone thermal conductivity factor, and carbon heat-conducting layer is made on sandstone top layer, changes leading for sandstone Hot property, is completed in a relatively short time and fills heat and heat release, thus can suitably reduce heat transfer fluid medium pipeline closed The density of distribution in container heat reservoir (thermal storage device), reduces the resistance of ducting, reduces aerodynamic power, drops the cost of heat accumulation engineering Get off;Again because severe oxidation can occur more than 400 DEG C for carbon top layer, it is necessary to which being filled with the container of the sandstone on carbon top layer has Seal, therefore fill inert nitrogen in the space on thermal storage device top and protect, cross thermal oxide to prevent carbon layer.
The further technical scheme of the method for the invention is also resided in:Impregnated using graphite paint after sandstone, paint solidification It is to form the good carbon heat-conducting layer of heat conductivility on sandstone top layer.
The further technical scheme of the method for the invention is also resided in:Using cut-back asphalt or letdown resin dipping sandstone, Then heated asphalt or resin are allowed to be carbonized and are attached to sandstone top layer, are that to form heat conductivility good on sandstone top layer after cooling Carbon heat-conducting layer.
The further technical scheme of the method for the invention is also resided in:Described sandstone uses granularity for 20 millimeters~45 millis Rice cobblestone and medium-fine sand.
The further technical scheme of the method for the invention is also resided in:Heat transfer fluid medium pipeline is the pipe by multi-layer multi-row Road connection is combined into pipe-support type heat exchanger.
The further technical scheme of the method for the invention is also resided in:Described sandstone can be magnesium carbonaceous, magnesium iron by material The gitter brick of matter etc. is substituted.Gitter brick density is more than sandstone, and specific heat is slightly larger than sandstone, although cost is higher, but itself and identical storage The thermal storage device of thermic load compares, and can also lower the volume of thermal storage device raising storage density.
For realizing that the sandstone heat-storing device for having carbon heat conduction top layer of the method for the invention has its interior filling There is the insulation closed container of sandstone, be provided with closed container sidewall end into the mouth of pipe and outlet spout, in the sandstone in closed container The pipe frame structure heat exchanger being made up of multi-layer multi-row heat transfer fluid medium pipeline is distributed with, the two ends of heat exchanger are respectively with entering the mouth of pipe Communicated with outlet spout, being made on the surface of sandstone has the carbon heat conduction table being made up of graphite paint, cut-back asphalt or letdown resin Graphite powder is filled with layer, the space between sandstone, a nitrogen cylinder (or small-sized nitrogen charger), nitrogen are externally provided with closed container The outlet of bottle (or small-sized nitrogen charger) is passed through in closed container through nitrogen tube.
The further technical scheme of device of the present invention is also resided in:The sandstone uses granularity for 20 millimeters~45 millimeters Cobblestone and medium-fine sand.
The further technical scheme of device of the present invention is also resided in:Being made in heat transfer fluid medium pipe surface has by stone The carbon heat conduction top layer that black coating, cut-back asphalt or letdown resin are constituted.
The further technical scheme of device of the present invention is also resided in:Described sandstone also can be magnesium carbonaceous, magnesium by material The gitter brick of irony etc. is substituted.
Compared with prior art, the good effect that has of the present invention is:
First, the present invention is using the sandstone for having carbon heat conduction top layer, and can make the heat transfer property of sandstone thermal storage device significantly improves, Reduce the power of the density of heat transfer pipe distribution and delivery pump in thermal storage device;
2nd, technical scheme of the present invention also can be as 500 DEG C of high temperature above thermal storage devices, for solar energy thermal-power-generating;
3rd, the present invention makees heat accumulating with sandstone material, and the container of heat accumulating is can not only be used for using general steel construction;
4th, the sandstone material that uses of the present invention is cheap and easy to get, low cost, and heat accumulation engineering cost can be greatly lowered.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the sandstone heat-storing device for having carbon heat conduction top layer.
Fig. 2 is the structural representation of accumulation of heat brick structure heat-storing device.
Each label title in figure is respectively:1- enters the mouth of pipe, 2- outlet spouts, 3- nitrogen cylinders (or small-sized nitrogen charger), 4- nitrogen tubes, 5- valves, 6- heat transfer fluid medium pipelines, 7- sandstones, 8- pressure gauges, 9- heat-insulation layers, 10- gitter bricks, 11- heat transfer pipes, 12- graphite powders, 13-U type grooves.
Embodiment
Referring to accompanying drawing, sandstone heat-storing method of the present invention is:It is filled with the container of closed container heat reservoir Sandstone of the polylith with carbon heat conduction top layer, the pipe-support type heat exchanger point being made up of the heat transfer fluid medium pipeline connection of multi-layer multi-row Cloth is in sandstone.In specific implementation, impregnate good in sandstone top layer formation heat conductivility after sandstone, paint solidification using graphite paint Good carbon heat-conducting layer;Or sandstone is impregnated using cut-back asphalt, then heating is allowed to carbonization and is attached to sandstone top layer, so that sandstone Top layer forms the good carbon heat-conducting layer of heat conductivility.Or sandstone is impregnated using letdown resin, then heating is allowed to carbonization attachment On sandstone top layer, so that sandstone surface forms carbon heat-conducting layer;It is completed in a relatively short time and fills heat and heat release, thus can be with The density that appropriate reduction fluid line is distributed in thermal storage device, reduces the resistance of ducting, reduces aerodynamic power, makes heat accumulation engineering Cost lowers.Treated sandstone adds trickle space between certain graphite powder filling sandstone when making thermal storage device, be allowed to Heat storage is more densely cross-linked.Inert nitrogen body is filled in the space on closed container heat reservoir top, to prevent the plain layer overheat oxygen of blocking Change.
The structure of the sandstone heat-storing device of the present invention for having a carbon heat conduction top layer is as shown in Figure 1.It has a wall If the nitrogen cylinder (or small-sized nitrogen charger) 3 that the closed container (thermal storage device) of heat-insulation layer 9 and one are built in outside closed container, holding Device sidewall end is provided with into the mouth of pipe 1 and outlet spout 2, is distributed with and is situated between by multi-layer multi-row heat-transfer fluid in the sandstone 7 in closed container The pipe frame structure heat exchanger that matter pipeline 6 is constituted, the two ends of heat exchanger are communicated with entering the mouth of pipe 1 and outlet spout 2 respectively, constitute pipe support knot Each heat transfer fluid medium pipeline 6 of structure heat exchanger is distributed in the sandstone 7 on carbon heat conduction top layer, is filled out in the space between sandstone Filled with graphite powder;The outlet of nitrogen cylinder (or small-sized nitrogen charger) 3 is passed through in closed container through the nitrogen tube 4 equipped with valve 5, is used to Inert nitrogen body is filled into closed container space, to prevent going out thermal oxide.Pressure gauge 8 is also equipped with the top of thermal storage device.
As the expansion of technical solution of the present invention, the heat accumulating in heat-storing device can also be gitter brick, usually magnesium The gitter brick of carbonaceous, mafic or other materials.Gitter brick density is more than sandstone, and specific heat is slightly larger than sandstone, although cost is higher, But the thermal storage device of itself and identical heat accumulation load compares, and can lower the volume of thermal storage device raising storage density.Gitter brick knot The structure of structure heat-storing device is as shown in Figure 2.In Fig. 2, there is U-type groove 13 on gitter brick 10, between U-type groove and heat transfer pipe 11 Graphite powder 12 is filled in gap, to strengthen the heat transfer property between gitter brick 10 and heat transfer pipe 11.

Claims (9)

1. a kind of sandstone heat-storing method for having a carbon heat conduction top layer, it is characterised in that:It is filled with closed container heat reservoir Sandstone, makes to have on the surface of sandstone graphite powder is filled with carbon heat conduction top layer, the space between sandstone, inside fill conduction oil or The heat transfer fluid medium pipeline of fused salt is distributed in the sandstone with carbon heat conduction top layer, and heat transfer fluid medium pipeline and sandstone are carried out Heat and heat release are filled in heat exchange, completion, and inertia nitrogen carrier of oxygen is filled in the space on closed container heat reservoir top.
2. the sandstone heat-storing method according to claim 1 for having a carbon heat conduction top layer, it is characterised in that:Using graphite paint Sandstone is impregnated, on sandstone top layer is to form the good carbon heat-conducting layer of heat conductivility after paint solidification.
3. the sandstone heat-storing method according to claim 1 for having a carbon heat conduction top layer, it is characterised in that:Using cut-back asphalt Or letdown resin impregnates sandstone, then heated asphalt or resin are allowed to be carbonized and are attached to sandstone top layer, that is, form heat conductivility Good carbon heat-conducting layer.
4. the sandstone heat-storing method for having carbon heat conduction top layer according to claim 1 or 2 or 3, it is characterised in that:Described Sandstone uses granularity for 20 millimeters~45 millimeters cobblestones and medium-fine sand.
5. the sandstone heat-storing method according to claim 1 for having a carbon heat conduction top layer, it is characterised in that:Described sandstone can It is magnesium carbonaceous, mafic gitter brick replacement by material.
6. a kind of sandstone heat-storing device for having a carbon heat conduction top layer, it is characterised in that:With one in it filled with sandstone (7) Closed container is incubated, is provided with closed container sidewall end into the mouth of pipe (1) and outlet spout (2), in the sandstone (7) in closed container The pipe frame structure heat exchanger being made up of multi-layer multi-row heat transfer fluid medium pipeline (6) is distributed with, the two ends of heat exchanger are respectively with entering The mouth of pipe (1) and outlet spout (2) are communicated, and are had in the surface making of sandstone (7) and are made up of graphite paint, cut-back asphalt or letdown resin Carbon heat conduction top layer, graphite powder is filled with the space between sandstone, a nitrogen cylinder (3), nitrogen are externally provided with closed container The outlet of gas cylinder (3) is passed through in closed container through nitrogen tube (4).
7. the sandstone heat-storing device according to claim 6 for having a carbon heat conduction top layer, it is characterised in that:The sandstone (7) Granularity is used for 20 millimeters~45 millimeters cobblestones and medium-fine sand.
8. the sandstone heat-storing device according to claim 6 for having a carbon heat conduction top layer, it is characterised in that:It is situated between in heat-transfer fluid Matter pipeline (6) surface, which makes, the carbon heat conduction top layer being made up of graphite paint, cut-back asphalt or letdown resin.
9. the sandstone heat-storing device according to claim 6 for having a carbon heat conduction top layer, it is characterised in that:Described sandstone (7) it by material can be magnesium carbonaceous, mafic gitter brick (10) replacement.
CN201710585597.4A 2017-07-18 2017-07-18 Sand and stone heat storage method with carbon heat conduction surface layer and device thereof Active CN107218832B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108151566A (en) * 2017-12-14 2018-06-12 西安中原机械有限公司 Impregnate sandstone heat-storing method and its device
CN108871029A (en) * 2018-07-19 2018-11-23 西安中原机械有限公司 Heat transfer medium overcurrent sandstone heat-storing method and its device
CN109028579A (en) * 2018-07-17 2018-12-18 于可欣 Boiler of organic heat carrier
CN110369242A (en) * 2019-07-26 2019-10-25 马鞍山钢铁股份有限公司 A kind of manufacturing process of anti-oxidation scaling loss substrate and anti-oxidation scaling loss steel billet product

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CN106091427A (en) * 2016-06-02 2016-11-09 张士博 A kind of solar energy collecting storage device
CN106152563A (en) * 2015-04-15 2016-11-23 西安科弘厨房工程设备有限责任公司 High temperature fluid medium/gitter brick is combined heat storage and heat supply system
CN207035920U (en) * 2017-07-18 2018-02-23 刘绍允 There is the sandstone heat-storing device on carbon heat conduction top layer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1777782A (en) * 2003-04-24 2006-05-24 莱博尔德真空技术有限责任公司 Heat-storing medium
CN102089611A (en) * 2008-02-20 2011-06-08 艾索尔企业有限公司 Heat accumulator composite material
CN102735087A (en) * 2011-04-02 2012-10-17 刘阳 Solid-state heat storage structure and processing method
CN103476479A (en) * 2011-04-08 2013-12-25 乔治洛德方法研究和开发液化空气有限公司 Particle of a phase change material with coating layer
US20140335382A1 (en) * 2013-05-13 2014-11-13 Alexander A. Balandin Thermal interface composite material and method
CN104713397A (en) * 2013-12-16 2015-06-17 北京兆阳光热技术有限公司 Solid heat storage system
CN105318758A (en) * 2014-07-04 2016-02-10 陕西科弘厨房工程设备有限公司 Heat-conducting-oil/corundum-ball double-medium heat storage device
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108151566A (en) * 2017-12-14 2018-06-12 西安中原机械有限公司 Impregnate sandstone heat-storing method and its device
CN109028579A (en) * 2018-07-17 2018-12-18 于可欣 Boiler of organic heat carrier
CN108871029A (en) * 2018-07-19 2018-11-23 西安中原机械有限公司 Heat transfer medium overcurrent sandstone heat-storing method and its device
CN110369242A (en) * 2019-07-26 2019-10-25 马鞍山钢铁股份有限公司 A kind of manufacturing process of anti-oxidation scaling loss substrate and anti-oxidation scaling loss steel billet product

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