CN105241087B - Split type single tank solids bulk bed heat reservoir - Google Patents
Split type single tank solids bulk bed heat reservoir Download PDFInfo
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- CN105241087B CN105241087B CN201510599841.3A CN201510599841A CN105241087B CN 105241087 B CN105241087 B CN 105241087B CN 201510599841 A CN201510599841 A CN 201510599841A CN 105241087 B CN105241087 B CN 105241087B
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
A kind of split type single tank solids bulk bed heat reservoir, its split type solids bulk bed heat storage can is formed along short transverse stacked in parallel by top conical shape heat accumulation tank body (1), multiple Split type cylindrical shape heat accumulation tank body and bottom cone heat accumulation tank body (11).Two conical heat accumulation tank bodies (1,11) and Split type cylindrical shape heat accumulation tank body pass through flange (12) and connect；The bottom of the top of top conical shape heat accumulation tank body (1) and bottom cone heat accumulation tank body (11) is separately installed with fluid inlet line (2) and fluid exit conduit (17).The bottom of top conical shape heat accumulation tank body (1) is provided with current equalizer (7).The bottom of each Split type cylindrical shape heat accumulation tank body is equipped with the support double-edged fine-toothed comb (11) of porous, solid heat accumulating passes through to support the support of double-edged fine-toothed comb (11), pile up in each Split type cylindrical shape heat storage can body and form mushy bed body, form heat-transfer fluid runner.In Split type cylindrical shape heat storage can body, heat accumulating is different, and accumulation mode is different.
Description
Technical field
The present invention relates to a kind of heat reservoir, more particularly, to a kind of solids bulk bed solar energy heat-storage system.
Background technology
In solar energy heat utilization field, especially in solar energy thermal-power-generating field, due to solar irradiation discontinuity and dispersibility
Feature, the operation of system has strong unstability, and then leads to generated output shakiness even damage equipment.Heat-storage technology
Can effectively solve the problem that heat energy both sides of supply and demand mismatch problem over time and space, so heat reservoir is solar thermal utilization
A crucial subsystem in system.For solar heat power generation system, heat reservoir can be incited somebody to action when solar energy is sufficient
Solar irradiation is converted into heat and stores, and in the case of solar energy deficiency or no solar irradiation, recycling stores
Heat energy is generated electricity.The mode of heat reservoir this " peak load shifting " not only extends system generating dutation, and stabilizes and be
The operation of system, improves the generating efficiency of system.
At present, in solar energy thermal-power-generating field, relatively common heat accumulation form has double tank heat accumulations and single two kinds of tank heat accumulation.Double
Tank heat reservoir is made up of a hot tank and a cold tank, fills heat-storage medium (usually fuse salt, the conduction oil in cold tank during heat
Deng liquid medium) absorb heat after enter hot tank and store, the high-temperature medium in heat release intermittent fever tank discharges it heat
After be returned to cold tank.Double tank heat reservoir structures are simple, technology maturation, but due to having two heat storage cans, heat-storage medium consumption
Greatly, when heat-storage medium adopts the relatively costly liquid medium such as fuse salt, conduction oil, system relatively costly.Compared to double
Tank heat reservoir, single tank heat reservoir only one of which heat storage can, save the usage amount of heat accumulating, and be typically chosen cheap
Solid material, as heat-storage medium, greatly reduces heat accumulation cost.Single tank heat accumulation is also called mesolimnion heat accumulation, in single tank cold,
Hot interface by one thickness is less but mesolimnion that thermograde is very big is separated.Fill the hot fluid above mesolimnion during heat
It is gradually increased, cold flow body below gradually decreases, and mesolimnion moves down, then contrary during heat release.Single tank mesolimnion heat accumulation has
The advantage that cost is relatively low, heat accumulation efficiency is higher.
Single tank solids bulk bed heat reservoir adopts cheap solid material as heat-storage medium, is single tank mesolimnion heat accumulation
A kind of canonic form.For single tank solids bulk bed heat reservoir, thermal ratchet is the key events related to circulate operation.?
In charging process, heat storage can heat up expand, internal capacity increase, lead to filler particles sink go fill by thermal expansion manufacture many
Covolume is amassed.And in exothermic process, heat storage can cools down, but filler particles due to self gravitation, come between granule extruding
And the frictional resistance producing, thus cannot move up, which prevent tank skin and shrink back original physical dimension, cause ladle bowl
In by repeat circulate operation and accumulative mechanical stress.Once the stress of ladle bowl has reached yield point, there is plastic deformation,
Being further continued for circulation may lead to tank structure to lose efficacy.Thermal ratchet phenomenon is the inherently scarce of single tank solids bulk bed heat reservoir presence
Fall into, should manage to avoid.
United States Patent (USP) US4214061 reports a kind of single tank mesolimnion heat reservoir it is characterised in that filling in heat storage can
Solid particle, as solid heat-storage medium, simultaneously as heat storage fluid when heat exchanging fluid flows in tank, flows through solid up and down
Grain is stacking bed, directly carries out heat exchange with solid material, in tank during system operation, Temperature Distribution assumes mesolimnion feature from top to bottom.
But, the large percentage of tank height shared by thermocline thickness during this system operation, and what solid conductive heat and local turbulent caused
Mesolimnion expansion (i.e. mixing of high and low temperature fluid) is difficult to suppression, leads to running efficiency of system to reduce；In addition, this system tank body
When reaching a certain height, the deadweight accumulation of internal solids packed particle is very big, and during system circulation hot operation, tank skin is following
Constantly expand with heat and contract with cold in the presence of ring thermal stress, be susceptible to thermal ratcheting, thus leading to tank structure to lose efficacy.
Patent CN102305480A reports a kind of single tank mesolimnion solar energy heat-storage system with deflection plate.Heat storage can
The multiple parallel deflection plates of interior arrangement, in the presence of deflection plate, form one or more snakelike runner in heat storage can.Pass through
Add the deflection plate of low thermal conductivity in heat storage can, effectively increase flow process in heat storage can for the heat exchanging fluid, decrease
The consumption of heat-storage medium, thus reduce the cost of heat reservoir.But, this system is integral type list tank heat storage can, still not
Thermal ratcheting is easily produced when can solve the problems, such as that system high temperature runs；And arrange multiple parallel deflection plates in tank, though
So increased the flow process of heat exchanging fluid, but also increase the resistance of flow of fluid in tank simultaneously, increased the irreversible damage of available energy
Lose；Simultaneously as the fixation of serpentine flow path, fluid is distributed and uneven in tank, and then is likely to result in heat exchanging fluid in tank
The uneven result with solid heat accumulating radial temperature profile.
Content of the invention
The purpose of the present invention is to overcome the shortcoming that in solar energy heat utilization field, existing heat reservoir exists, and proposes a kind of knot
Structure is simple, with low cost, split type single tank solids bulk bed heat reservoir of stable system performance, heat accumulation efficiency high.
The solar energy heat-storage system of the present invention adopts solid heat accumulating, has mesolimnion characteristic in charge and discharge thermal process.
The present invention split type solids bulk bed heat reservoir by split type solids bulk bed heat storage can, fluid inlet line and
Fluid exit conduit forms.Described split type solids bulk bed heat storage can is by two conical heat accumulation tank bodies and multiple split type
The upright stacked in parallel of cylindrical heat accumulation tank body forms.Two conical heat accumulation tank bodies are respectively placed in top and the bottom of heat storage can,
The bottom of the top of top conical shape heat accumulation tank body and bottom cone heat accumulation tank body is separately installed with fluid inlet line and stream
Body outlet conduit；It is fluid inlet line that described fluid inlet line fills during heat, is fluid exit conduit during heat release；Described
It is fluid exit conduit that fluid exit conduit fills during heat, is fluid inlet line during heat release.Described split type solids bulk bed
In heat storage can, multiple Split type cylindrical shape heat accumulation tank body stacked in parallel are between two conical heat accumulation tank bodies.Split type cylindrical
The upper and lower of shape heat accumulation tank body is respectively arranged with adpting flange, and each split is connected into an entirety, forms the centre of heat storage can
Part.In the bottom of top conical shape heat accumulation tank body, current equalizer is installed.The bottom of each Split type cylindrical shape heat accumulation tank body is all pacified
Equipped with the support double-edged fine-toothed comb of porous, solid heat accumulating passes through to support the support of double-edged fine-toothed comb, in each Split type cylindrical shape heat storage can body
Pile up and form mushy bed body, form heat-transfer fluid runner.
Described Split type cylindrical shape heat accumulation tank body and conical heat accumulation tank body adopt the version of inside holding, its tank body by
Highiy refractory brick, heat-preservation cotton and thermal storage device shell composition.Highiy refractory brick is located at the innermost layer of heat accumulation tank body, and heat-preservation cotton is wrapped in
The outside of highiy refractory brick, thermal storage device shell is located at outermost layer, wraps up heat-insulation layer.Highiy refractory brick by way of pouring, with
Heat-insulation layer in tank body, thermal storage device shell form an entirety.Heat accumulation tank interior is by highiy refractory brick by way of cast
Integrally formed, as the inner bag of split type solids bulk bed heat storage can, it is easy to solid heat accumulating and is piled into porous bed in it
Body, forms heat-transfer fluid runner.Because the heat conductivity of highiy refractory brick is low, in filling heat and exothermic process, play auxiliary and protect
The effect of temperature, reduces the high-temperature hot fluid conduction of heat external with heat accumulating and thermal radiation loss.Simultaneously as highiy refractory brick
Thermal coefficient of expansion little, in the cyclic process repeatedly filling exothermic heat, can effectively mitigate due to cyclic thermal stres effect and
The thermal storage device deformation leading to or damage.Described Split type cylindrical shape heat storage can is using the side amassing along the parallel lamination stack of short transverse
Formula, not only improves reduction floor space, is conducive to heat exchanging fluid in charge and discharge thermal process to rely on natural buoyancy effect built-in in tank again
Stand and maintain mesolimnion.
Described support double-edged fine-toothed comb is concrete dynamic modulus circle flat board, has advantages of higher compressive strength, larger hardness and heat conductivity to the greatest extent
Feature that may be low, can select the making of the material such as resistant to elevated temperatures pottery, steel alloy according to practical application.Support the hole of double-edged fine-toothed comb
Gap size can determine according to the size of specifically used solid heat accumulating unit.Support the effect of double-edged fine-toothed comb, one is to support to pile up
The weight of solid heat accumulating thereon, prevents its whereabouts；Two is the solid that will pile up in multiple Split type cylindrical shape tank bodies
The weight dispersion of material, prevents deadweight cumulative, and then mitigates the impact of thermal ratcheting from root；Three is to support double-edged fine-toothed comb heat conduction
Coefficient is low, can prevent the heat of high temperature of top solid heat accumulating from directly being transmitted to bottom by way of heat conduction, necessarily
The high-quality of heat be ensure that on degree, decrease available energy loss；Four be support double-edged fine-toothed comb hole less, and along tank body radially
It is evenly distributed, fluid in tank body can be made in system operation to be radially uniformly distributed as far as possible.
Conical heat accumulation tank body described in two is respectively arranged in top and the bottom of split type solids bulk bed heat storage can,
Split type cylindrical shape heat accumulation tank body, the conical heat accumulation tank body described in two is connected between conical heat accumulation tank body described in two
On be connected to fluid inlet line and fluid exit conduit.According to hydrodynamics and aerodynamic, split type solid
The heat accumulation tank body of the top of the stacking bed heat storage can of body and bottom adopts the design of conical transition it is ensured that flowing into split type circle
The relatively uniform distribution of heat exchanging fluid of cylindricality heat accumulation tank body.
The present invention has mesolimnion discharge charge thermal characteristicss in filling heat and exothermic process, is embodied in：Entering with heat release
OK, cold flow body enters split type solids bulk bed heat storage can from pot bottom.For making full use of the buoyancy effect of fluid itself, fill heat
Shi Liuti typically flows into from the top of split type solids bulk bed heat storage can, from the bottom of split type solids bulk bed heat storage can stream
Go out, and during heat release, then adopt reflux type.Heat release is initial, and in split type solids bulk bed heat storage can, all of heat accumulating is all located
In the condition of high temperature, when starting heat release, from pot bottom enter the cold flow body of heat storage can first with the heat accumulating heat exchange positioned at bottom,
Fluid temperature (F.T.) gradually rises, and the temperature of bottom heat accumulating is gradually lowered to the inlet flow body temperature with split type solids bulk bed
Spend close low temperature state.With the carrying out of heat release, heat exchanging fluid continues to carry out heat exchange with heat accumulating, and then makes heat accumulation material
The temperature of material becomes mesolimnion heat storage area from low temperature to high-temperature gradient shape transition.Propulsion over time, mesolimnion gradually to
Heat accumulation tank top is moved, and cryogenic material is continuously increased, and high-temperature material constantly reduces, and heat is constantly extracted by heat exchanging fluid.
Charging process is then contrary.
Different heat accumulatings can be chosen in different described Split type cylindrical shape heat storage can bodies, and take different heaps
Long-pending mode is arranging.Because heat reservoir mesolimnion stores up thermal property, in discharge charge thermal process, positioned at split type solids bulk
The heat accumulating of the Split type cylindrical shape heat accumulation tank body on bed heat storage can top remains high temperature, and the storage of split type solids bulk bed
The material of hot tank bottom Split type cylindrical shape heat accumulation tank body then keeps low temperature, can pass through rational heat accumulation conceptual design, to reach
To the purpose increasing heat storage capacity, saving heat accumulating, raising heat accumulation efficiency：One is to be combined heat accumulation side using latent heat and sensible heat
Formula, keeps from the phase-change heat-storage material that storage density is higher in the Split type cylindrical shape heat storage can of high temperature on top, bottom
The solid researching of sensible heat storage material of middle low temperature is can be selected in low temperature Split type cylindrical shape heat storage can；Two is using single sensible heat heat accumulation
Mode, but along the high direction of tank, it is gradually increased or reduces the porosity that in split type heat storage can, solid particle is piled up so that dividing
Porosity in body formula solids bulk bed heat storage can upper pyrometer Split type cylindrical shape heat storage can is minimum, and heat accumulating is most, and
Then contrary in the split type heat storage can of described heat storage can bottom low temperature；Three is to combine both the above scheme, in split type solid heap
Long-pending bed heat storage can top keeps in the Split type cylindrical shape heat storage can of high temperature from the phase-change material that storage density is higher, adopts simultaneously
With the accumulation mode of porosity so that not only energy storage density is maximum in the Split type cylindrical shape tank body of the top highest temperature, and
And heat accumulating is at most, split type solids bulk bed heat storage can bottom then adopts common researching of sensible heat storage material, and with relatively large
Porosity piled up.
Described solid heat accumulating can be heat accumulation ball made by the solid materials such as sandstone, pottery, concrete or metal,
Heat storage blocks etc. or the heat accumulation ball being made up of coating phase-change materials such as pottery, metal materials or heat storage blocks etc..Heat accumulation material
Material is piled up in some way in Split type cylindrical shape heat accumulation tank interior, forms the heat transfer fluid passages of loose structure.
Due to the scrambling of fluid passage, increase the heat exchange area of heat-transfer fluid and heat accumulating to a certain extent, enhance
Heat convection, improves heat accumulation efficiency.
The present invention split type solids bulk bed heat reservoir, according to the difference of service condition, its heat exchanging fluid can be gas
Body, such as air or liquid, such as conduction oil, fuse salt or water vapour etc..When using gas as heat-transfer fluid, heat accumulation
Material is only solids bulk material, belongs to solid heat accumulation.When using high temperature heat conductive oil, fuse salt or water vapour as heat-transfer fluid
When, heat-transfer fluid and solid heat-storage medium can collectively constitute heat accumulating, belong to solid-liquid and are combined heat accumulation.
The work process of the present invention includes filling heat and two processes of heat release, specific as follows：When filling heat, high temperature fluid is from heat accumulation
Tank top fluid inlet line flows into top conical shape heat accumulation tank body, makees through all stream of conical heat accumulation tank body and current equalizer
With uniformly flowing into top the first Split type cylindrical shape heat accumulation tank body, and carrying out heat exchange, heat exchanging fluid temperature with heat accumulating therein
Degree reduces, and heat accumulating temperature raises, and heat is stored in heat accumulating, and heat exchanging fluid continues to described heat storage can bottom afterwards
Flowing in portion, and carries out heat exchange with the heat accumulating in each Split type cylindrical shape tank body step by step, and the fluid that last heat exchange finishes passes through
The conical heat accumulation tank body of bottom, from bottom flow outlet conduit outflow system.With the carrying out filling heat, split type solids bulk
In bed heat storage can, the temperature of heat accumulating gradually rises, and the mesolimnion heat storage area carrying out heat exchange moves down, until heat all fills
Full.And during heat release, by the way of adverse current heat release, cryogen flows into from bottom flow inlet pipeline, respectively through bottom circle
Taper heat accumulation tank body and all stream supporting double-edged fine-toothed comb, uniformly flow into bottom Split type cylindrical shape heat accumulation tank body, first with temperature of lower
Relatively low heat accumulating carries out heat exchange, and heat accumulating temperature reduces, and fluid temperature (F.T.) raises, and the heat of storage is extracted
Come, heat exchanging fluid continues to flow to heat accumulation tank top afterwards, and the heat accumulating being gradually risen with temperature step by step along tank height is changed
Heat, the high temperature fluid finally obtaining in the Split type cylindrical shape heat storage can body of top, through top conical shape heat accumulation tank body, from top
Portion's fluid exit conduit flows out.With the carrying out of heat exchange, in split type solids bulk bed heat storage can, the temperature of heat exchanging fluid is gradually
Raise, the heat being stored in heat accumulating is gradually extracted, carry out moving on the mesolimnion heat storage area of heat exchange, Zhi Daore
Amount is released completely.
In sum, it is an advantage of the current invention that：
1st, described heat reservoir, due to the design using split type tank body, all arranges double-edged fine-toothed comb in each split type tank body
Support the weight with dispersing solid packed particle, inner tank wall adopts the low refractory brick of the coefficient of expansion simultaneously, can be to greatest extent
The system that reduces causes the possibility of thermal ratchet phenomenon because cyclic high-temperature operates, and extends the service life of system.
2nd, described heat reservoir, due to adopting split-type design, increased solid material species and selects and the choosings such as accumulation mode
The motility selected, can make full use of mesolimnion storage thermal property, heat accumulation scheme reasonable in design, the overall heat accumulating profit of lifting
With rate, high-quality quantity of heat storage percentage, and then lift heat accumulation efficiency.
3rd, when heat exchanging fluid flows through above-mentioned heat reservoir, heat exchange occurs mainly in mesolimnion heat storage area, due to tiltedly warm
The temperature of layer intra-zone heat-storage medium and fluid is in ladder distribution so that temperature product when heat accumulating and heat exchanging fluid heat exchange
Matter has preferable coupling：The heat accumulating of lower temperature and relatively low fluid heat transfer, the heat accumulating of higher temperature with higher
Fluid heat transfer.So, the Average heat transfer temperature difference of system substantially reduces, and available energy (fire is used) loss of heat transfer process reduces.
4th, the design of conical heat accumulation tank body of top and bottom transition in described heat reservoir, current equalizer adopt with
And in each Split type cylindrical shape heat storage can porous double-edged fine-toothed comb arrangement so that in heat storage can heat exchanging fluid is along tank body radially
Limits be uniformly distributed it is ensured that the uniformity of solid heat accumulating and heat-transfer fluid radial temperature profile, thus maximum limit
Reduce the probability that radial direction cold and hot fluid mixes flow-disturbing degree.
5th, described heat reservoir structure is simple, is piled up using solid heat accumulating and forms fluid passage, decreases conventional storage
The cost of hot device heat exchange pipeline；Main conical heat accumulation tank body and Split type cylindrical shape heat accumulation tank body all can be using fixing moulds
Tool one moulding by casting, easy to make, overcome the difficulty that large-scale integral type tank body makes, reduce processing simultaneously and install
Cost；Cheap solid or porous material may be selected as heat-storage medium, heat accumulation cost is relatively low.In addition, system adopts inwall resistance to
Firebrick auxiliary insulation and two kinds of Insulations of external application heat-insulation layer, high insulating effect is little to external heat losses.
6th, the wide temperature range that described heat reservoir is suitable for, can be from tens degrees Celsius to thousands of degrees Celsius.Both can use
In solar water heater with water as heat exchanging fluid etc., low-temperature solar energy heat utilization field is it is also possible to be used in conduction oil, molten
Melt the medium and high temperature solar energy thermal-power-generating field that salt, vapor, air etc. are heat exchanging fluid.
Based on above-mentioned advantage, the present invention split type single tube solids bulk bed solar energy heat-storage system, in, low-temperature solar energy
Heat utilization, and medium and high temperature solar energy thermal-power-generating field, have significant application prospect.Additionally, can also be simultaneously in electric power station system
Connection uses two or many heat reservoirs according to the present invention, to meet bigger heat accumulation demand.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 a, Fig. 2 b are respectively the present example structural representation using different heat accumulation schemes；
Fig. 3 a, Fig. 3 b are respectively the present example structural representation adopting different heat transfer medium；
Fig. 4 a, Fig. 4 b are respectively in present example, the different structure that Split type cylindrical shape heat accumulation tank base is installed
Support double-edged fine-toothed comb schematic diagram；
Fig. 5 show the support double-edged fine-toothed comb structural representation of the embodiment of the present invention.
In figure：1 top conical shape heat accumulation tank body, 2 fluid inlet flanges, 3 fluid inlet line, 4 highiy refractory bricks, 5 guarantors
Wen Mian, 6 heat storage can Stainless Steel Shell, 7 current equalizers, 8 conical tank body adpting flanges, 9 Split type cylindrical shape heat accumulation tank body tops
Adpting flange, 10 first Split type cylindrical shape heat accumulation tank bodies, 11 support double-edged fine-toothed combs, 12 Split type cylindrical shape heat accumulation tank body lower parts connect
Flange, 13 second split cylinder heat accumulation tank bodies, 14 N-1 Split type cylindrical shape heat accumulation tank bodies, 15 N Split type cylindrical shape storages
Hot tank body, 16 bottom cone heat accumulation tank bodies, 17 fluid exit conduit, 18 fluid issuing adpting flanges, 19 solid sensible heat heat accumulations
Material, 20 heat transfer fluid passages, 21 phase-change heat-storage materials, 22 gaseous heat transfer fluid, 23 liquid heat transfer fluid, 24 inwall boss,
25 inwalls project steel construction.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
The embodiment of the present invention split type solids bulk bed heat reservoir is as shown in Figure 1.Described heat reservoir mainly by point
Body formula solids bulk bed heat storage can, fluid inlet line and fluid exit conduit composition.Described split type solids bulk bed storage
Hot tank is by top conical shape heat accumulation tank body 1, N number of Split type cylindrical shape heat accumulation tank body and bottom cone heat accumulation tank body 11 along height
Direction stacked in parallel forms, N>3.Pass through split respectively between two conical heat accumulation tank bodies and Split type cylindrical shape heat accumulation tank body
Formula cylinder heat accumulation tank body top adpting flange 9 and Split type cylindrical shape heat accumulation tank body lower part adpting flange 12 connect.
The tank body part of conical heat accumulation tank body and Split type cylindrical shape heat accumulation tank body is mainly by highiy refractory brick 4, insulation
Face 5 and 6 groups of heat storage can Stainless Steel Shell are integral, form the supporting construction of split type solids bulk bed heat reservoir.High temperature is resistance to
Firebrick 4 is the liner of heat accumulation tank body, simultaneously because its heat conductivity is little, can be used as the auxiliary heat-insulation layer of heat accumulation tank body；In addition, by
Little in highiy refractory brick thermal coefficient of expansion, under system circulation high-temperature operation, can effectively reduce the thermal stress within heat storage can,
Reduce the possibility that thermal ratchet phenomenon occurs.It is filled with solid researching of sensible heat storage material 19 or phase transformation storage in each split type heat storage can
Hot material 21, solid researching of sensible heat storage material 19 piles up mushy heat-transfer fluid runner 20 in tank interior.Support double-edged fine-toothed comb 11
It is positioned over Split type cylindrical shape heat accumulation tank base, for supporting solid researching of sensible heat storage material 19 or phase-change material 21, prevent
It falls, and prevents the deadweight of solids bulk material in tank from adding up, and mitigates the possibility that thermal ratcheting produces from root.Top
The bottom of the top of conical heat accumulation tank body 1 and bottom cone heat accumulation tank body 16 is respectively disposed with fluid inlet line 3 and stream
Body outlet conduit 17, passes in and out heat reservoir for heat exchanging fluid, is disposed with fluid inlet flange 2 and fluid issuing flange 18 simultaneously,
It is connected with extraneous pipeline with facilitating.It is fluid inlet line that described fluid inlet line fills during heat, is fluid issuing during heat release
Pipeline；It is fluid exit conduit that described fluid exit conduit fills during heat, is fluid inlet line during heat release.In top conical shape
The bottom of heat accumulation tank body is disposed with current equalizer 7, and the bottom of Split type cylindrical shape heat accumulation tank body is disposed with open support double-edged fine-toothed comb 11, all
Stream device 7 and open support double-edged fine-toothed comb 11 collective effect, can ensure the radially even distribution of heat exchanging fluid in tank to greatest extent.Each point
The height of body formula heat accumulation tank body, not occur thermal ratcheting to be defined as far as possible, the species according to concrete heat accumulating and size,
The factors such as the size of heat accumulation tank diameter, the height and position being specifically in system carry out appropriately designed, each Split type cylindrical
The height of shape heat accumulation tank body can be different.
Fig. 2 show the split type solids bulk bed heat reservoir structural representation using different heat accumulation schemes.The present invention
System mesolimnion can be maximally utilised by selecting different heat accumulating species and different heat accumulating arrangements
The feature of discharge charge heat, carries out different heat accumulation conceptual designs, to improve the quality of storage heat, and then lifts heat accumulation efficiency.Figure
2a show the solid sensible heat heat accumulation scheme piled up using different porosities, in split type solids bulk bed heat storage can upper pyrometer
The first Split type cylindrical shape heat accumulation tank body 10 inside, can be by using the relatively small heat storage units of diameter or using close
The mode that collection is piled up, to realize less porosity accumulation, to increase the consumption of high-temperature heat-storage material, lifts high-quality heat accumulation
Capacity, and then lift heat accumulation efficiency.Simultaneously using more in the N Split type cylindrical shape heat storage can 15 of described heat storage can bottom low temperature
Big porosity is piled up, and can save heat accumulating consumption, reduces cost to a certain extent.Fig. 2 b show and adopts same porosity
Solid sensible heat-the latent heat piled up is combined heat accumulation scheme, selects inside the first Split type cylindrical shape heat accumulation tank body 10 of upper pyrometer
With the bigger phase-change heat-storage material of storage density 21, phase-change heat-storage material 21 can be to wrap up phase transformation by pottery, metal material etc.
Material and the heat accumulation ball made or heat storage blocks.The heat accumulating of so same amount can store more high-quality heats, carries
Rise heat accumulation efficiency.Furthermore it is also possible to two ways is carried out according to identical principle by various combination design according to practical situation.
Fig. 3 show the embodiment of the present invention structural representation using different heat transfer medium.The embodiment of the present invention can adopt
Different heat transfer mediums, forms different heat reservoir forms.Fig. 3 a show when heat transfer medium is for gas, and heat-storage medium exists
Topology layout figure in split type solids bulk bed heat reservoir.Now, because gas cannot be carried out heat accumulation, heat-storage medium
It is only the solid heat accumulating pile up in tank body, be single solid heat accumulation form.Fig. 3 b show heat transfer medium be fuse salt,
During the fluid liquid such as conduction oil or vapor, topology layout in split type solids bulk bed heat reservoir for the heat-storage medium
Figure, now, solid heat accumulating is immersed in liquid heat transfer fluid, and both solid heat accumulating and liquid heat transfer fluid store up jointly
Heat, forms liquid-solid compound heat accumulation form.
As shown in figure 4, Split type cylindrical shape heat accumulation tank base of the present invention to install support using different fixed structures
Double-edged fine-toothed comb.Wherein Fig. 4 a show when highiy refractory brick one is poured into a mould and pours, in Split type cylindrical shape heat storage can bottom interior wall, outpour convex
Platform structure；Fig. 4 b show the support stretching out inwall when pouring into a mould highiy refractory brick in the setting of Split type cylindrical shape heat accumulation pot bottom
Steel construction, the size of steel construction and arrangement quantity can carry out reasonable selection according to specific applicable cases.
It is illustrated in figure 5 the structural representation supporting double-edged fine-toothed comb 11 in the embodiment of the present invention.Double-edged fine-toothed comb 11 is supported to be one piece of porous
The circular flat board of gap, by having high compressive strength, higher hardness, the high temperature resistant and alap material of heat conductivity on this basis
Material is made, can be according to materials such as specific applicable cases Ceramics, steel alloys, and its pore size foundation is specifically adopted
The size of heat accumulating unit determines so as to heat accumulating can either be supported to conduct oneself with dignity, and can guarantee that heat transfer medium smoothly leads to simultaneously again
Cross storage and the release that heat reservoir carries out heat.The diameter supporting double-edged fine-toothed comb 11 is generally equivalent to Split type cylindrical shape heat accumulation tank body
Diameter.
Claims (8)
1. a kind of split type single tank solids bulk bed heat reservoir is it is characterised in that described heat reservoir is by split type solid
Stacking bed heat storage can, fluid inlet line and fluid exit conduit composition；Described split type solids bulk bed heat storage can is by pushing up
Portion's cone heat accumulation tank body (1), N number of Split type cylindrical shape heat accumulation tank body and bottom cone heat accumulation tank body (16) are along short transverse
Stacked in parallel forms, N>3；The top of Split type cylindrical shape heat accumulation tank body is equipped with Split type cylindrical shape heat accumulation tank body top connection method
Blue (9), bottom is respectively arranged with Split type cylindrical shape heat accumulation tank body lower part and connects adpting flange (12), top conical shape heat accumulation tank body
(1), pass through Split type cylindrical shape heat accumulation between bottom cone heat accumulation tank body (16) and Split type cylindrical shape heat accumulation tank body respectively
Tank body top adpting flange (9) and Split type cylindrical shape heat accumulation tank body lower part adpting flange (12) connect；Top conical shape heat accumulation
The bottom of the top of tank body (1) and bottom cone heat accumulation tank body (16) is separately installed with fluid inlet line and fluid outlet pipe
Road (17)；It is fluid inlet line that described fluid inlet line fills during heat, is fluid exit conduit during heat release；Described fluid
It is fluid exit conduit that outlet conduit (17) fills during heat, is fluid inlet line during heat release；Described split type solids bulk bed
In heat storage can, multiple Split type cylindrical shape heat accumulation tank body stacked in parallel are in top conical shape heat accumulation tank body (1) and bottom cone
Between heat accumulation tank body (16)；The bottom of top conical shape heat accumulation tank body (1) is provided with current equalizer (7)；Each Split type cylindrical shape storage
The bottom of hot tank body is mounted on the support double-edged fine-toothed comb (11) of porous, and solid heat accumulating passes through to support the support of double-edged fine-toothed comb (11),
Pile up in each Split type cylindrical shape heat storage can body and form mushy bed body, form heat-transfer fluid runner.
2. split type single tank solids bulk bed heat reservoir according to claim 1 is it is characterised in that described is split type
Cylindrical heat accumulation tank body, top conical shape heat accumulation tank body (1) and bottom cone heat accumulation tank body (16) adopt the structure of inside holding
Form, its tank body is made up of highiy refractory brick, heat-preservation cotton and thermal storage device shell；Highiy refractory brick is located at the interior of heat accumulation tank body
Layer, heat-preservation cotton is wrapped in the outside of highiy refractory brick, and thermal storage device shell is located at outermost layer, wraps up heat-insulation layer；Highiy refractory brick leads to
Cross the mode pouring, with tank body in heat-insulation layer, thermal storage device shell formed an entirety；Heat accumulation tank interior is by highiy refractory brick
Integrally formed by way of cast, as the inner bag of split type solids bulk bed heat storage can, it is easy to solid heat accumulating at it
Inside it is piled into porous bed body, form heat-transfer fluid runner.
3. split type single tank solids bulk bed heat reservoir according to claim 1 is it is characterised in that described is split type
In solids bulk bed heat storage can, keep the Split type cylindrical shape heat accumulation tank interior of high temperature positioned at top, using diameter relatively
Little heat storage units or to realize little porosity by the way of dense accumulation and pile up, to increase the use of high-temperature heat-storage material
Amount, the capacity of lifting high-quality heat accumulation, and then lift heat accumulation efficiency；Adopt in the Split type cylindrical shape heat storage can of bottom low temperature simultaneously
Piled up with big porosity.
4. split type single tank solids bulk bed heat reservoir according to claim 1 is it is characterised in that described is split type
In solids bulk bed heat storage can, top keeps in the Split type cylindrical shape heat storage can of high temperature from the phase-change thermal storage that storage density is big
Material (21), simultaneously using porosity accumulation mode so that top high temperature Split type cylindrical shape tank body in not only store up
Energy density is maximum, and heat accumulating is most；The solid sensible heat storage of low temperature in then adopting in the Split type cylindrical shape tank body of bottom
Hot material, and piled up with relatively large porosity.
5. split type single tank solids bulk bed heat reservoir according to claim 1 is it is characterised in that described is split type
In solids bulk bed heat storage can, top keeps selecting storage density big phase-change thermal storage material in the Split type cylindrical shape heat storage can of high temperature
Material (21), the low temperature Split type cylindrical shape heat storage can of bottom can be selected for the solid researching of sensible heat storage material of middle low temperature.
6. the split type single tank solids bulk bed heat reservoir according to claim 4 or 5 is it is characterised in that described phase transformation
Heat accumulating (21) is the heat accumulation ball or heat storage blocks being made up of pottery, metal material coating phase-change materials, or is by ceramic or golden
Belong to heat accumulation ball or the heat storage blocks that material coating phase-change materials are made.
7. split type single tank solids bulk bed heat reservoir according to claim 1 is it is characterised in that described support is combed
Sub (11) are concrete dynamic modulus circle flat board, support the diameter of double-edged fine-toothed comb (11) and the equal diameters of Split type cylindrical shape heat accumulation tank body；Institute
The support double-edged fine-toothed comb (11) stated in heat reservoir Multi-layers distributing, be arranged in parallel, by the bottom in Split type cylindrical shape heat accumulation tank body
Portion's inwall setting boss or prominent steel construction, fix to supporting double-edged fine-toothed comb (11) to carry out installing.
8. split type single tank solids bulk bed heat reservoir according to claim 1 is it is characterised in that described top is justified
The bottom of the top of taper heat accumulation tank body (1) and bottom cone heat accumulation tank body (16) is respectively disposed with fluid inlet flange (2)
With fluid issuing flange (18), to be connected with extraneous pipeline.
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