CN104677161B - Self adaptation deformation capacity phase-changing energy-storing device - Google Patents
Self adaptation deformation capacity phase-changing energy-storing device Download PDFInfo
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- CN104677161B CN104677161B CN201510056360.8A CN201510056360A CN104677161B CN 104677161 B CN104677161 B CN 104677161B CN 201510056360 A CN201510056360 A CN 201510056360A CN 104677161 B CN104677161 B CN 104677161B
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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
The open a kind of self adaptation deformation volume phase-changing energy-storing device of the present invention, it is provided with the insulation outer wall of tubular, close heat-preservation bottom and the heat-preserving cover plate of insulation outer wall two opening, also include the heat exchanger be located at the inwall being incubated outer pars intramuralis He be located at interior pars intramuralis, gap is left between inwall and outer wall, inwall includes rib, threaded connector and wall, rib is integrally fixed on wall lateral surface or the elastic pitman of medial surface, described wall is two or more, threaded connector number many one than wall, adjacent two walls are threaded connection part and engage, and heat-preservation bottom and heat-preserving cover plate are threaded connection part respectively and engage with the wall at inwall two ends.The present invention can avoid container damage or the damage caused because of density and Volume Changes during Working fluid phase changing, can ensure that energy accumulation container internal working medium height does not reduce too much because of variable density simultaneously, thus ensure that heat exchanger keeps being immersed in working medium, improve heat exchange efficiency and heat exchange uniformity.
Description
Technical field
The invention belongs to energy storage field, be specifically related to a kind of phase-change accumulation energy system.
Background technology
In industrial production and daily life, energy storage is very important.The energy exploitation, change, transport and utilize during, between the supply and demand of energy, often there is quantity, form and temporal difference, energy storage technology can effectively utilize the energy to make up these difference.
Utilize especially for new energy development, such as solar energy, wind energy, geothermal energy, tide energy, wave energy, thermal gradient energy, salt error energy etc., these energy have the unstable characteristics such as randomness, stable output can be produced by energy-storage system, promote energy quality, improve practicality and expand use space.For the energy of some stable outputs, because the unstability used, the balance supplied between consumption can also be effectively matched by energy-storage system, improve service efficiency, there is stronger economy, energy-conserving and environment-protective are worth.
Energy storage has the advantage that the automatic deterioration preventing energy figure, improves the performance of energy transition process, convenient economic use energy, and reduction is polluted, protection environment.
Phase-changing energy-storing technology belongs to energy storage field, have the following characteristics that 1, volume storage density big: the heat energy of latent heat of phase change accumulation of energy is bigger, it is common that once dozens or even hundreds of times of sensible heat；2, temperature fluctuation amplitude is little: object phase transition process is carried out at a certain temperature, and excursion is relatively small, and the material after this characteristic can make phase transformation can keep substantially invariable heat capacity, therefore can be designed that simple and reliable constant temperature heating system.
Generally being varied from the density of phase transition process phase-change material, the density of such as 0 DEG C water and ice respectively may be about 1000kg/m3And 800kg/m3If this variable density causes producing phase transformation, its volumetric expansion 1.25 times at energy accumulation container exothermic process, if not carrying out effective measures, expansion can damage or damage energy accumulation container, and then cause the unavailable of energy-storage system, use salt accumulation of heat working medium and then environmental pollution and bigger economic loss can be caused.
Tradition energy accumulation container is the non-deformable mode of inwall, and internal capacity can not change.In order to ensure safety, generally using modes such as controlling energy-accumulation material not exclusively solidification, this mode does not has fully utilized latent heat, energy waste is serious, utilization ratio is low, simultaneously as Volume Changes may result in the heat exchanger relative change in location in working medium, heat transfer effect is deteriorated；Simultaneously can be probably due to the reasons such as heat transfer change cause local coagulation to seal damage energy accumulation container.
Summary of the invention
It is an object of the invention to overcome the deficiency of tradition energy accumulation container, it is provided that a kind of phase-changing energy-storing device that can deform capacity with self adaptation.
For reaching the purpose of foregoing invention, the present invention is achieved through the following technical solutions:
A kind of self adaptation deformation volume phase-changing energy-storing device, include the insulation outer wall of tubular, close heat-preservation bottom and the heat-preserving cover plate of insulation outer wall two opening, this phase-changing energy-storing device also includes the heat exchanger be located at the inwall being incubated outer pars intramuralis He be located at interior pars intramuralis, gap is left between described inwall and outer wall, inwall includes rib, threaded connector and wall, rib is integrally fixed on wall lateral surface or the pitman of medial surface, described wall is two or more, then threaded connector number than wall many, adjacent two walls are threaded connection part and engage, and heat-preservation bottom and heat-preserving cover plate are threaded connection part respectively and engage with the wall at inwall two ends；The inlet and outlet of described heat exchanger passes from inner and outer wall the most successively.
Further, the rib of described inwall uses the elastic vertical rod that four head and the tail are fixedly connected, and corresponding wall section is right angle parallelogram.
Further, the rib of described inwall uses the flexible arc rod that head and the tail are fixedly connected, then corresponding wall section is oval.
Described self adaptation deformation volume phase-changing energy-storing device, the when of in inside without working medium, its inwall is made up of multistage flat plate wall or little radian wall and threaded connector and rib, and its section shape is that square, rectangle or class are oval.Rib is used for shaping for inwall, deform in stress posterior rib, detailed process is for causing partially sealed and bottom phase transformation trend to be that working medium density reduces volume increase and causes internal face and rib stress when phase transformation, rib becomes arc, wall becomes arc, and threaded connector deforms, and along with the continuing to increase of phase-change working substance ratio, volume continues to increase, wall section shape is more nearly circle, and volume increases；After phase transformation is carried out completely, in container, wall is not subjected to unnecessary expansive force, rib and wall reinstatement, and section shape restPoses.
Further, the rib of described inwall uses the non-resilient straight rod that four head and the tail are fixedly connected, and corresponding wall section is on-right angle parallelogram, arranges spring, and the most coplanar setting of spring of multiple wall in wall in the corresponding position, two diagonal angles of rib.
Further, the rib of described inwall uses the elastic vertical rod that four head and the tail are fixedly connected, and corresponding wall section is on-right angle parallelogram, arranges spring, and the most coplanar setting of spring of multiple wall in wall in the corresponding position, two diagonal angles of rib.
Described inwall and rib, it is shaped as on-right angle parallelogram, oblique angle short-term uses spring as rib, if phase transition process has volumetric expansion power act on inwall and then cause spring stress to extend, parallelogramming deflection, its acute angle increases along with volumetric expansion and is gradually increased, and volume increases, when volumetric expansion power reduces, then spring restores to the original state, and inwall section restPoses.
The self adaptation deformation volume phase-changing energy-storing device of the present invention is based on the principle of circular area maximum during same girth, utilize rib to control inner wall deformation and reach the purpose of capacity, security performance is good, ensure the relative position of heat exchanger and then improve heat transfer effect, the security all having had in solid phase, liquid phase and two-phase state and heat transfer effect, take thermal ratio high.
Accompanying drawing explanation
Fig. 1 is the side schematic view that the inwall that do not stresses is square phase-changing energy-storing device of the embodiment of the present invention 1.
Fig. 2 is the generalized section cut out from side of phase-changing energy-storing device shown in Fig. 1.
Fig. 3 is a certain view that phase-changing energy-storing device is deformed into after embodiment 1 stress.
Fig. 4 is the side schematic view of the self adaptation phase-changing energy-storing device that inwall is on-right angle parallelogram of not stressing of the embodiment of the present invention 2.
Fig. 5 is the generalized section cut out from side of phase-changing energy-storing device shown in Fig. 4.
Fig. 6 is a certain view after embodiment 2 stress after the deformation of phase-changing energy-storing device.
Reference 10-insulation outer wall, 21-heat-preservation bottom, 22-heat-preserving cover plate, 30-inwall, 31-rib, 32-threaded connector, 33-wall, 4-space, 5-heat exchanger, 6-charging door, 7-dumping pit, 8-spring.
Detailed description of the invention
With embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described below in conjunction with the accompanying drawings, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiment.
Embodiment 1
nullRefer to Fig. 1 and Fig. 2，The side schematic view of the embodiment of the self adaptation deformation capacity phase-changing energy-storing device of the present invention and generalized section，This self adaptation deformation volume phase-changing energy-storing device，Include the insulation outer wall 10 of cylindrical shape、Close heat-preservation bottom 21 and the heat-preserving cover plate 22 of insulation 10 liang of openings of outer wall，This phase-changing energy-storing device also includes to be located at insulation inwall 30 within outer wall 10 and is located at the heat exchanger 5 within inwall 30，Gap 4 is left between described inwall 30 and outer wall 10，Inwall 30 includes rib 31、Threaded connector 32 and wall 33，Rib 31 is integrally fixed at the elastic pitman on wall 33 lateral surface，Described wall 33 is two or more，Then threaded connector 32 number is than wall more than 33 one，Adjacent two walls 33 are threaded connection part 32 and engage，And heat-preservation bottom 21 and heat-preserving cover plate 22 are threaded connection part 32 respectively and engage with the wall 33 at inwall 30 two ends；The inlet and outlet of described heat exchanger 5 passes from inwall 30 and outer wall 10 the most successively.
Being provided with the charging door 6 for being passed through energy accumulation working medium material on heat-preserving cover plate 22, heat-preservation bottom 21 is provided with dumping pit 7.
In the present embodiment, described rib 31 can use the elastic pitman that four head and the tail are fixedly connected, and corresponding wall 33 section is right angle parallelogram.In energy accumulation working medium heat absorption or exothermic process, seal if having working medium to solidify in certain elevation plane and condensing in be formed on wall 33, then when the phase transition process of bottom energy-accumulation material is expansion process, the phase of little density i.e. it is changed into by the phase of big density, become the process of solid ice for heat release aqueous water as a example by water, with sodium nitrate, then become the process of liquid for heat absorption solid-state as a example by potassium nitrate or sodium chloride etc., rib 31 stress becomes arc, the contact portion of the wall 33 being connected with rib 31 is also deformed into arc, threaded connector 32 stress deformation, inwall 30 is deformed into irregularly shaped, refer to Fig. 3.If continuing to expand, then radian continues to become big, and this deformation ensures in the case of girth is constant, and internal capacity increases, and the situation inwall 30 of the contrast constancy of volume expands stress and reduces.Sometime, if sealing plane is broken, inwall 30 stress reduces, then rib 31 radian diminishes and possibly even becomes straight line, and wall 33 reverts to original state equally.
Multistage wall 33 and multi-segment thread connector 32 is taked to can ensure that when Different Plane condenses and seals, the stress of diverse location gradually changes deformation, phase-changing energy-storing device more safety and stability, also ensure that enough elastomeric deformable, threaded connector 32 meets, by deformation change in size, the change in displacement that wall 33 section deforms and produces because shape is inconsistent between wall 33 and heat-preservation bottom 21 simultaneously.
Area circular when the operation principle of phase-changing energy-storing device is same girth is maximum, under girth same case, circular area > area > rectangular area > on-right angle parallelogram, then when not changing or changing little, when container inner wall 30 shape by square grade other non-circular become round time, its internal capacity becomes big.It is indeformable in heat transfer process that it mainly shows as being incubated outer wall 10, heat-preservation bottom 21, heat-preserving cover plate 22, and inwall 30 be the design that can deform, and inwall 30 and the space 4 being incubated between outer wall 10 are varied from varied situations.
According to using the solid liquid phase volume ratio of energy accumulation working medium, being designed the shape of wall 33, data below shows the area ratio of the difformity section under same girth:
The rectangular area that ratio is 2 of long minor face: area: circular area
=1:1.25:1.43.
Along with the ratio of long minor face increases, rectangle increases with area ratio, and rectangle increases with circular area ratio, and increasing degree is consistent.
If solid-liquid density ratio is for 1:1.1, then using the inwall 30 that section is oval to design, rib 31 uses flexible arc rod to be processed inwall 30.If density ratio is for 1:1.25, then inwall 30 and rib 31 use plane, sectility face to be square.
Further, corresponding oval inwall 30 designs, and the rib 31 of described inwall 30 then uses the flexible arc rod that head and the tail are fixedly connected.
Embodiment 2
Referring to Fig. 4, for the phase-changing energy-storing device that inwall section shape is on-right angle parallelogram of the embodiment of the present invention 2, comparative example 1, adds spring structure 8.
Just during beginning and end stress or when not filled energy-accumulation material working medium, inwall 30 shape of container is as it is shown in figure 5, its inwall 33 section shape is on-right angle parallelogram.In wall 33, in the corresponding position, two diagonal angles of rib 31, spring is set, and the spring of multiple wall 33 is the most coplanar is arranged in phase-changing energy-storing device, when working medium expands and has sealing that working medium height in container can not be raised, then inwall 30 stress deformation, the stretching of spring 8 stress is fixed at section oblique angle, inwall 30 section deformation tendency is that parallelogram sharp angle is gradually increased, maximum distortion can become rectangle as shown in Figure 6, in the case of girth is constant, volume increases, and situation container inner wall 30 stress of the contrast constancy of volume reduces.And when solidify sealing situation be broken time, spring tension promote inwall 30 to return to non-stress before state, rib 31 in this case uses four non-resilient straight rods being fixed on wall 33.
Or it is elastic rod that rib 31 uses similar to Example 1, along with the increase expanding volume in the case of condensing sealing, the wall 33 section shape deformation tendency of its inwall 30 is that acute angle is gradually increased to right angle and then becomes radian, it is i.e. to be become rectangle from on-right angle parallelogram until can become oval or circular, it seals after breaking, and restores to the original state under rib 31 and spring 8 dual stress effect.
Data below shows the area ratio of the embodiment 2 difformity section under same girth:
Ratio is 2 60 ° of parallelogram areas of long minor face: the rectangular area that ratio is 2 of long minor face: circular area=1:1.155:1.651；
60 ° of parallelogram areas that the length of side is the same: area: circular area=1:1.155:1.321.
Along with reducing of sharp angle, area ratio increases.
The phase-changing energy-storing device of the present invention is mainly used for phase change cold-storage, accumulation of heat occasion, particularly working medium energy storage system with solid-liquid phase change, can avoid because variable density during Working fluid phase changing produces Volume Changes consequently, it is possible to the container damage that causes or damage, can ensure that energy accumulation container internal working medium height does not reduces because density increases simultaneously, thus ensure that heat exchanger keeps being immersed in working medium, improve heat exchange efficiency and heat exchange uniformity, the drawback of tradition energy accumulation container is avoided by deformation capacity mode, can be with fully utilized latent heat, more safe and reliable, heat transfer effect is more preferable.
Above-described embodiment is only in order to illustrate the present invention and and unrestricted technical scheme described in the invention；Therefore, although this specification with reference to each above-mentioned embodiment to present invention has been detailed description, but, it will be understood by those within the art that, still the present invention can be modified or equivalent；And all are without departing from the technical scheme of the spirit and scope of the present invention and improvement thereof, it all should be contained in the middle of scope of the presently claimed invention.
Claims (5)
1. a self adaptation deformation volume phase-changing energy-storing device, includes the insulation outer wall of tubular, closes and protect
The heat-preservation bottom of temperature outer wall two opening and heat-preserving cover plate, it is characterised in that also include and be located at insulation outer wall
Internal inwall and the heat exchanger being located at interior pars intramuralis, leave gap, inwall bag between described inwall and outer wall
Having included rib, threaded connector and wall, rib is integrally fixed on wall lateral surface or the connection of medial surface
Rod, described wall is two or more, then threaded connector number than wall many, adjacent two
Individual wall is threaded connection part and engages, and heat-preservation bottom and heat-preserving cover plate are threaded connection part respectively
Engage with the wall at inwall two ends；The inlet and outlet of described heat exchanger passes from inner and outer wall the most successively.
Self adaptation deformation volume phase-changing energy-storing device the most according to claim 1, it is characterised in that:
The rib of described inwall uses the elastic vertical rod that four head and the tail are fixedly connected, and corresponding wall section is straight
Angle parallelogram.
Self adaptation deformation volume phase-changing energy-storing device the most according to claim 1, it is characterised in that:
The rib of described inwall uses flexible arc rod, then corresponding wall section is oval.
Self adaptation deformation volume phase-changing energy-storing device the most according to claim 1, it is characterised in that:
The rib of described inwall uses the non-resilient straight rod that four head and the tail are fixedly connected, and corresponding wall section is
On-right angle parallelogram, arranges spring in the corresponding position, two diagonal angles of rib in wall, and multiple
The most coplanar setting of spring of wall.
Self adaptation deformation volume phase-changing energy-storing device the most according to claim 1, it is characterised in that:
The rib of described inwall uses the elastic vertical rod that four head and the tail are fixedly connected, and corresponding wall section is non-
Right angle parallelogram, arranges spring, and multiple wall in the corresponding position, two diagonal angles of rib in wall
The most coplanar setting of spring in face.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510056360.8A CN104677161B (en) | 2015-02-03 | 2015-02-03 | Self adaptation deformation capacity phase-changing energy-storing device |
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| CN201510056360.8A CN104677161B (en) | 2015-02-03 | 2015-02-03 | Self adaptation deformation capacity phase-changing energy-storing device |
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| CN104677161B true CN104677161B (en) | 2016-08-17 |
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| CN111735215B (en) * | 2020-07-03 | 2021-07-30 | 西安建筑科技大学 | Area-variable type phase-change sleeve solar flat plate collector |
| CN114576865B (en) * | 2022-03-10 | 2023-04-07 | 重庆大学 | Heat-storage energy-saving tile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4211208A (en) * | 1976-12-24 | 1980-07-08 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V. | Container for a heat storage medium |
| CN101004334A (en) * | 2007-01-24 | 2007-07-25 | 苏树强 | Accumulated heat exchanger |
| DE102011000655A1 (en) * | 2010-02-11 | 2011-08-11 | Athmann, Uwe, 45145 | Heat transporting method, involves changing volume of chambers, so that total capacity of chambers is constant, and connecting chambers with connection pieces, such that filling and draining of chambers takes place temporarily at same time |
| CN102384685A (en) * | 2011-11-03 | 2012-03-21 | 江苏河海新能源有限公司 | Novel water energy storage device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2938304B1 (en) * | 2008-11-07 | 2015-06-05 | Renault Sas | COOLANT STORAGE TANK FOR INTERNAL COMBUSTION ENGINE AND COOLING DEVICE THEREFOR |
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- 2015-02-03 CN CN201510056360.8A patent/CN104677161B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4211208A (en) * | 1976-12-24 | 1980-07-08 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V. | Container for a heat storage medium |
| CN101004334A (en) * | 2007-01-24 | 2007-07-25 | 苏树强 | Accumulated heat exchanger |
| DE102011000655A1 (en) * | 2010-02-11 | 2011-08-11 | Athmann, Uwe, 45145 | Heat transporting method, involves changing volume of chambers, so that total capacity of chambers is constant, and connecting chambers with connection pieces, such that filling and draining of chambers takes place temporarily at same time |
| CN102384685A (en) * | 2011-11-03 | 2012-03-21 | 江苏河海新能源有限公司 | Novel water energy storage device |
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Effective date of registration: 20200217 Address after: 510640 room 510, building 2, energy conservation and environmental protection building, No. 2, energy road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: Guangzhou micro control energy technology Co., Ltd Address before: Guangzhou City, Guangdong province 510640 energy road No. 2 Tianhe District Wushan Patentee before: GUANGZHOU INSTITUTE OF ENERGY CONVERSION, CHINESE ACADEMY OF SCIENCES |
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