CN108826715A - A kind of step phase-change accumulation energy high temperature straight through heat collection tube - Google Patents
A kind of step phase-change accumulation energy high temperature straight through heat collection tube Download PDFInfo
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- CN108826715A CN108826715A CN201810913491.7A CN201810913491A CN108826715A CN 108826715 A CN108826715 A CN 108826715A CN 201810913491 A CN201810913491 A CN 201810913491A CN 108826715 A CN108826715 A CN 108826715A
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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
- Y02E10/44—Heat exchange systems
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Abstract
The present invention discloses a kind of step phase-change accumulation energy high temperature straight through heat collection tube, including outer glass tube, metal heat absorption inner tube, tank core, Different diameter spring bracket and flange ring, the metal heat absorption inner tube is between the outer glass tube and the tank core, and the tank core is located at the inside of metal heat absorption inner tube；The both ends of the tank core are overlapped on the Different diameter spring bracket, are welding between the Different diameter spring bracket and the flange ring；The both ends of the outer glass tube are connect with the interface of the flange ring, and the both ends of the metal heat absorption inner tube pass through the flange ring and reach the outside of the flange ring, are fixedly connected between the metal heat absorption inner tube and the flange ring.Thermal-collecting tube of the invention realizes that thermal-arrest is integrated with heat accumulation, greatly improves the utilization rate of energy, and easy-to-use, structure is simple, economic and environment-friendly, long service life, is conducive to wide popularization and application.
Description
Technical field
The present invention relates to solar energy heat utilization technical fields.Specifically a kind of step phase-change accumulation energy high temperature is straight-through
Thermal-collecting tube.
Background technique
The increasingly poor and excessive exploitation bring of fossil energy pollutes, so that both at home and abroad to the demand of renewable energy
Amount increasingly increases, and renewable energy, especially solar energy have potentiality to be exploited big, renewable, sustainable use, is promoting economy
Development improves energy resource structure, and reduce environmental pollution, meet energy demand etc. plays an important role, and has caused both at home and abroad
Extensive concern.
Solar thermal utilization is gradually extended to solar heating, solar energy drying, solar heat hair from solar water heater
The industrial or agricultural such as electricity utilize field, have obtained promotion and application.However, since solar energy is by season and day-night change, Changes in weather
Influence so that the heat of a large amount of solar energy heat collection engineering acquisition is unstable, and later period accumulation of heat higher cost so that it is most of too
Positive energy heat collecting engineering utilization efficiency is low, or even because of winter that thermal-collecting tube is freezing and in paralyzed state.
Chinese patent literature CN203719155U discloses a kind of phase change energy-storage type solar vacuum heat-collecting pipe, uses complete
Glass-vacuum tube stores phase-change material, since the inner tube of outer tube and storage phase-change material is integrated non-conventional glass structure,
Manufacturing cost is very high, is not suitable for large-scale promotion application；In addition, due to thermal-collecting tube each in practical application be different from laboratory into
The Miniature collecting heat pipe of row theoretical research, but the thermal-collecting tube that can store compared with multi-phase change material just has a practical application value, and in
Integrated non-conventional glass structure in state patent document CN203719155U, which determines, can not store many phase-change materials, no
Then manufacturing cost will be very high；Further, since which employs install the mode of spring support inside outer glass tube to storage
The inner tube of phase-change material is supported, and spring support is easily damaged outer glass tube and glass inner tube in practice of construction；And by
It is poorer than metal in the thermal conductivity of glass, thus even if smearing heat-absorbing material on glass inner tube, it cannot also reach and utilize metal
Heat-transfer effect as storage phase-change material.
Chinese patent literature CN104848569A discloses a kind of metal absorber energy storage type vacuum tube and has the vacuum
The heat collector of pipe uses the combination of outer glass tube and metal energy-storage tube, but one end and outer glass tube due to metal energy-storage tube
One end be assembled together by metal sealing lid, bellows and transition rings, the weight of metal energy-storage tube passes through metal sealing lid
It is transmitted to the tube wall edge of outer glass tube, this requires greatly improving the intensity of the tube wall of outer glass tube, or gold is greatly reduced
Belong to the weight of the phase-change material of energy-storage tube and its storage to adapt to the intensity of outer glass tube, thus this heat collector is as laboratory
Theoretical research uses, and can not obtain large-scale promotion in practical applications.
Chinese patent literature CN101893339A discloses a kind of separation-type vacuum tube and sleeve combinational high-temperature heat reservoir, with
Chinese patent literature CN203719155U is similar with Chinese patent literature CN104848569A：Store the one of the inner tube of phase-change material
End be fixedly connected with one end of outer tube so as to storage phase-change material inner tube to support, storage phase-change material inner tube radial direction
Or it can not then be buffered when axial expansion；And inner tube is supported using spring support card in the other end, this decision
It is also impossible to store many phase-change materials in inner tube, and there is spring support card in construction and damage glass inner tube/outer tube
Situation, therefore use multiple " separation-type vacuum tubes-casing " in Chinese patent literature CN101893339A and be composed storage
Defect of the hot device to overcome single " separation-type vacuum tube-casing " storage phase-change material few.
Summary of the invention
For this purpose, technical problem to be solved by the present invention lies in a kind of step phase-change accumulation energy high temperature straight through heat collection tube.
In order to solve the above technical problems, the present invention provides the following technical solutions：
A kind of step phase-change accumulation energy high temperature straight through heat collection tube, including it is outer glass tube, metal heat absorption inner tube, tank core, different
Diameter spring bracket and flange ring, the metal heat absorption inner tube is between the outer glass tube and the tank core, and the storage
Energy core is located at the inside of metal heat absorption inner tube；The both ends of the tank core are overlapped on the Different diameter spring bracket, described
It is welding between Different diameter spring bracket and the flange ring；The both ends of the outer glass tube are connect with the interface of the flange ring,
The both ends of the metal heat absorption inner tube pass through the flange ring and reach the outside of the flange ring, the metal heat absorption inner tube
It is fixedly connected between the flange ring.
Above-mentioned step phase-change accumulation energy high temperature straight through heat collection tube, the both ends of the outer glass tube are equipped with bellows, described
One end of bellows is sealed by the end of kovar alloy ring and outer glass tube；The other end of the bellows and connecing for flange ring
Mouth welding；It is to be equipped at 150mm-300mm on the lower part tube wall of the outer glass tube and apart from outer glass tube one end distance
Exhaust outlet.
Above-mentioned step phase-change accumulation energy high temperature straight through heat collection tube is coated with choosing on the outer surface of metal heat absorption inner pipe wall
Selecting property absorber coatings；The annulus that the outer glass tube, metal heat absorption inner tube and flange ring are surrounded is vacuum space, in institute
On the flange ring for stating vacuum space inside both ends, it is respectively arranged with getter, one end is evaporable air-absorbing agent, and the other end is non-steaming
Dissipate type getter.
Above-mentioned step phase-change accumulation energy high temperature straight through heat collection tube, the tank core both ends are tip sealing structure, the storage
Can the tip at core both ends overlapped respectively with the lesser one end of the Different diameter spring stent diameter, the Different diameter spring stent diameter compared with
Big one end is welded on the flange ring inner sidewall；The lateral wall of the tank core is equipped with metal supporting frames, and passes through institute
It states metal supporting frames to be connected with the inner sidewall of metal heat absorption inner tube, and the tank core, the outer glass tube and the gold
It is coaxial to belong to heat absorption inner tube three；The tank core inner sealing is equipped with energy storage material, and the volume of the energy storage material is the storage
The 50%-80% of energy core inner space total volume；The lateral wall of the tank core, the inner sidewall of metal heat absorption inner tube, institute
It states the inner sidewall of flange ring and space that the Different diameter spring bracket being welded on flange ring inner sidewall is surrounded is built-in
There is heat transfer flow working medium.
Above-mentioned step phase-change accumulation energy high temperature straight through heat collection tube is equipped with pressure sensor on the tank core inner sidewall,
The output pressure signal line of the pressure sensor is drawn from the sealing tip of one end of the tank core, and and alarm buzzer
Connection；The alarm buzzer is located on the heat absorption inner tube lateral wall of the metal on the outside of the flange ring；The pressure sensing
The signal output end of device is connected by the output pressure signal line with the signal input part of the alarm buzzer.
Above-mentioned step phase-change accumulation energy high temperature straight through heat collection tube, the metal supporting frames include that metal large circle, metal are small
Annulus and the spring bracing between metal large circle and metal small circle ring, there is large circle notch on metal large circle,
There are small circle ring notch, the notch length respectively place of the large circle notch and the small circle ring notch on metal small circle ring
The 10%-20% of annulus perimeter, the spring bracing are 3-6 and equidistantly distributed；The metal large circle and the gold
The axial width for belonging to small circle ring is 10mm-20mm, and the wall thickness of the metal large circle and the metal small circle ring is 0.1-
3mm；The outer diameter of the metal large circle is identical as the internal diameter of the metal heat absorption tube, the internal diameter of the metal small circle ring with it is described
The outer diameter of tank core is identical, and the tank core is sleeved in the metal small circle ring, and the metal large circle is sleeved on the gold
Belong on absorbing pipe inner sidewall.
Above-mentioned step phase-change accumulation energy high temperature straight through heat collection tube, the thickness of pipe wall of the outer glass tube are 1.8mm-3.5mm, institute
The outer diameter for stating outer glass tube is 100mm-250mm, and the internal diameter of the outer glass tube is bigger than the outer diameter of metal heat absorption inner tube
10mm-30mm；The thickness of pipe wall of the metal heat absorption inner tube is 2mm-4mm, and the outer diameter of the metal heat absorption inner tube is 80-230mm；
The thickness of pipe wall of the tank core is 3mm-5mm, and the outer diameter of the tank core is 30mm- smaller than the internal diameter of metal heat absorption inner tube
The length of 50mm, the tank core are 30mm-50mm smaller than the length of the outer glass tube；The length of the Different diameter spring bracket is
20mm-40mm。
Above-mentioned step phase-change accumulation energy high temperature straight through heat collection tube, the energy storage material solid-liquid phase change temperature are 60~100 DEG C
Between, vapourizing temperature is 250~450 DEG C.
Above-mentioned step phase-change accumulation energy high temperature straight through heat collection tube, the pressure that the tank core can bear are up to 5MPa.
Technical solution of the present invention achieves following beneficial technical effect：
In the present invention：Tank core is fixed on metal heat absorption by the Different diameter spring bracket and metallic supports at its both ends
The inside of inner tube, Different diameter spring bracket are fixedly connected by flange ring with metal heat absorption inner tube, and such tank core can process
It must be relatively large in diameter and axial longer to store a large amount of phase-change material, and not need to greatly improve manufacturing cost, in favor of
It promotes and applies；Outer glass tube is sleeved on metal by the bellows and flange ring at its both ends and absorbs heat in inner tube, and outer glass tube is folder
It holds between the bellows at both ends, such outer glass tube is only subjected only to the gravity of itself, does not need additionally to bear other any heavy
Power, so that thermal-collecting tube of the invention can be made very big by the intensity for not needing additionally to improve glass tube.
Since tank core is to be fixed on metal heat absorption inner tube by the Different diameter spring bracket and metallic supports at its both ends
Inside, in use, for the tank core of large volume when expanding with heat and contract with cold, Different diameter spring bracket and metallic supports can
It with the axial/radial expansion of buffering accumulated energy core respectively or shrinks, and is able to maintain tank core and is fixed on the interior of metal heat absorption inner tube
Portion.In addition, tank core both ends are pyramidal structure, it can substantially reduce the contact area with Different diameter spring bracket in this way, thus
Tank core is seldom by the thermal loss of the Different diameter spring bracket at its both ends when accumulation of heat.
Small circle ring notch on metal small circle ring make it possible to that easily metal small circle ring is sleeved in tank core and
It is fitted close with energy storage core outer surface, the large circle notch on metal large circle makes it possible to easily put into metal large circle
It is fitted close, is sleeved in tank core and tight with energy storage core outer surface inside metal heat absorption tube and with metal heat absorption tube inner wall
Close fit；Metallic supports can be relatively fixed with metal heat absorption tube by tank core in this way.
Step phase-change accumulation energy high temperature thermal-collecting tube absorbs heat caused by solar energy, while can store heat, and fill
Divide solid-liquid phase change latent heat, sensible heat and the liquid-gas phase transition latent heat using energy storage material, increases heat storage capacity, energy storage density is high, volume
It is small, good economy performance, while avoid again severe cold cold district because temperature is too low cause thermal-collecting tube bursting by freezing the case where, energy conservation and environmental protection,
Safe temperature can be widely applied to the industrial or agricultural such as slot type or linear fresnel solar hot water, heating, power generation, drying using system
In engineering of uniting.Sufficiently the solid-liquid phase change latent heat of energy storage material, sensible heat and liquid-gas phase transition latent heat are comprehensively utilized, may be designed to
The energy storage material volume of storage is 0.0025m3~0.04578m3, heat 4.725MJ~204.1788MJ can be stored.
Detailed description of the invention
The structural schematic diagram of Fig. 1 step phase-change accumulation energy high temperature straight through heat collection tube of the present invention；
The metallic supports structural schematic diagram of Fig. 2 step phase-change accumulation energy high temperature straight through heat collection tube of the present invention.
Appended drawing reference is expressed as in figure：1- metal heat absorption inner tube, 2- Different diameter spring bracket, 3- bellows, 4- outer glass tube,
5- tank core, 6- phase-changing energy storage material, 7- metallic supports, 8- pressure sensor, 9- alarm buzzer, 10- pressure output letter
Number line, 11- flange ring, 12- nonevaporable getter, 13- tailpipe, 14- coating for selective absorption, the vacuum space 15-,
16- kovar alloy ring, 17- evaporable air-absorbing agent, 71- metal large circle, 72- metal small circle ring, 73- spring bracing, 74- are big
Annular indentation, 75- small circle ring notch.
Specific embodiment
As shown in Figure 1, a kind of step phase-change accumulation energy high temperature straight through heat collection tube of the present embodiment, including outer glass tube 4, gold
Belong to heat absorption inner tube 1, tank core 5, Different diameter spring bracket 2 and flange ring 11, the metal heat absorption inner tube 1 is located at the outer glass tube
Between 4 and the tank core 5, and the tank core 5 is located at the inside of metal heat absorption inner tube 1；The two of the tank core 5
End is overlapped on the Different diameter spring bracket 2 on the flange ring 11, is between the Different diameter spring bracket 2 and the flange ring 11
Welding；The both ends of the outer glass tube 4 are connect with the interface of the flange ring 11, and the both ends of the metal heat absorption inner tube 1 pass through
The flange ring 11, and the outside of the flange ring 11 is reached, it is solid between the metal heat absorption inner tube 1 and the flange ring 11
Fixed connection.
The both ends of the outer glass tube 4 are equipped with bellows 3, one end of the bellows 3 by kovar alloy ring 16 with
The end of outer glass tube 4 seals；The joint weld of the other end and flange ring 11 of the bellows 3；Under the outer glass tube 4
It is that exhaust outlet 13 is equipped at 150mm-300mm on portion's tube wall and apart from 4 one end of outer glass tube distance, in heated condition
The air in annulus is extracted out by evacuation process down.
Coating for selective absorption 14 is coated on the outer surface of metal heat absorption 1 tube wall of inner tube；In the outer glass tube 4
The annulus that wall, metal heat absorption 1 outer wall of inner tube and flange ring 11 are surrounded is vacuum space 15, in the vacuum space 15
On the flange ring 11 at portion both ends, it is respectively arranged with getter, one end is evaporable air-absorbing agent 17, and the other end is non-evaporable getter
Agent 12.Nonevaporable getter 12 absorbs survival gas in annulus, and it is residual that evaporable air-absorbing agent 17 not only absorbs annulus
Gas is deposited, and can indicate vacuum degree.
5 both ends of tank core be tip sealing structure, the tip at 5 both ends of tank core respectively with the Different diameter spring
The lesser one end overlap joint of 2 diameter of bracket, one end that the Different diameter spring bracket 2 is relatively large in diameter are welded on 11 inside of flange ring
On wall；The lateral wall of the tank core 5 is equipped with metal supporting frames 7, and is absorbed heat by the metal supporting frames 7 with the metal
The inner sidewall of inner tube 1 is connected, and the tank core 5, the outer glass tube 4 and metal heat absorption 1 three of inner tube are coaxial.
Different diameter spring bracket 2 avoids 5 end of tank core from directly touching flange ring 11 and damage tank core 5.Metallic supports 7
Play the function of support and heat transfer.
5 inner sealing of tank core is equipped with energy storage material 6, and the volume of the energy storage material 6 is inside the tank core 5
The 50%-80% of space total volume, heat accumulating 6, undamped, the service life is long, can repeatedly discharge heat, can be according to caloric receptivity and temperature
And solid-liquid phase change and liquid-gas phase transition occurs, the tank core 5 of sealing can bear the pressure of 5MP or more, make full use of 6 phase of energy storage material
The heat storage capacity of change；The inside of the lateral wall of the tank core 5, the inner sidewall of metal heat absorption inner tube 1, the flange ring 11
The annulus that wall and the Different diameter spring bracket 2 four being welded on 11 inner sidewall of flange ring are surrounded is provided with heat transfer stream
It starts building matter.The tank core 5 is made of high temperature resistant, anti-aging metal.
Absorber coatings 14 convert light energy into thermal energy, and by metal heat absorption inner tube 1 and metallic supports 7, thermal energy is passed
Heat transfer flow working medium is passed, thermal energy a part is taken away by heat transfer flow working medium, and another part is passed to be protected with metal heat absorption inner tube 1
Concentric tank core 5 is held, the phase-changing energy storage material 6 in tank core 5 is heated, for storing heat.
As shown in Figure 1, being equipped with pressure sensor 8, the pressure of the pressure sensor 8 on 5 inner sidewall of tank core
Output signal line 10 is drawn from the sealing tip of one end of the tank core 5, and is connect with alarm buzzer 9；The alarm bee
The device 9 that rings is located on metal heat absorption 1 lateral wall of inner tube in 11 outside of flange ring；The pressure of the pressure sensor 8 is believed
Number output end is connected by the output pressure signal line 10 with the signal input part of the alarm buzzer 9.Energy storage material 6
It is not chemically reacted with tank core 5 and pressure sensor 8, not will form pollution,
The 6 solid-liquid phase change temperature of energy storage material is between 60~100 DEG C, and vapourizing temperature is 250~450 DEG C.Work as temperature
When reaching solid-liquid phase change temperature, energy storage material starts to melt, and continues to absorb heat and be converted to solid-liquid phase change latent heat to be stored,
After all having melted, heat accumulating continues to absorb heat, and temperature increases, when temperature reaches vapourizing temperature, heat accumulating
It begins vaporization, absorb heat and is converted to liquid-gas phase transition latent heat and is stored.
For the safety for ensureing tank core 5 and thermal-collecting tube, there is pressure sensor 8 in tank core 5, it is real to pass through pressure sensor 8
When monitoring tank core 5 in pressure.The pressure that the tank core 5 can bear is up to 5MPa, i.e., the described pressure sensor 8 is set
Fixed pressure security value is 5MPa.When 6 temperature of energy storage material reaches a certain level and vaporizes, 5 internal pressure of tank core of sealing
Setting safety value 5MPa is increased to, output pressure signal is transmitted to alarm buzzer 9, and alarm buzzer 9 starts and alarms, avoids storing up
Energy 6 temperature of material is excessively high, and the pressure that gas generates after vaporization is excessive and destroys thermal-collecting tube.
As shown in Fig. 2, the metal supporting frames 7 are including metal large circle 71, metal small circle ring 72 and are located at metal great circle
Spring bracing 73 between ring 71 and metal small circle ring 72, there is large circle notch 74 on metal large circle 71, small in metal
There are small circle ring notch 75, the notch length respectively place of the large circle notch 74 and the small circle ring notch 75 on annulus 72
The 10%-20% of annulus perimeter, the spring bracing 73 are 3-6 and equidistantly distributed；The metal large circle 71 and institute
The axial width for stating metal small circle ring 72 is 10mm-20mm, the wall of the metal large circle 71 and the metal small circle ring 72
Thickness is 0.1-3mm；The outer diameter of the metal large circle 71 is identical as the internal diameter of the metal heat absorption tube 1, the metal roundlet
The internal diameter of ring 72 is identical as the outer diameter of the tank core 5, and the tank core 5 is sleeved in the metal small circle ring 72, the gold
Belong to large circle 71 to be sleeved on 1 inner sidewall of metal heat absorption tube, metallic supports 7 are corrosion-resistant, and anti-aging and heating conduction is good
It is good.
As shown in Figure 1, the thickness of pipe wall of the outer glass tube 4 is 1.8mm-3.5mm, the outer diameter of the outer glass tube 4 is
The internal diameter of 100mm-250mm, the outer glass tube 4 are 10mm-30mm bigger than the outer diameter of metal heat absorption inner tube 1；The metal
The thickness of pipe wall for inner tube 1 of absorbing heat is 2mm-4mm, and the outer diameter of the metal heat absorption inner tube 1 is 80-230mm；The pipe of the tank core 5
Wall thickness is 3mm-5mm, and the outer diameter of the tank core 5 is 30mm-50mm smaller than the internal diameter of metal heat absorption inner tube 1, guarantees heat transfer
The length of flow working medium smooth outflow, the tank core 5 is 30mm-50mm smaller than the length of the outer glass tube 4；The reducing bullet
The length of spring bracket 2 is 20mm-40mm.
The working principle of this kind of step phase-change accumulation energy high temperature thermal-collecting tube is：
1. step phase-change accumulation energy high temperature thermal-collecting tube to be placed in the place of the sun, the sun in the case where there is the sun
Light penetrates outer glass tube 4, is irradiated on the coating for selective absorption 14 being coated in the outer side wall surface of metal heat absorption inner tube 1, choosing
Selecting property absorber coatings 14 absorb solar energy, and convert solar energy into thermal energy, pass to metal heat absorption inner tube 1.
After inner tube 1 absorbs thermal energy 2. metal absorbs heat, the lateral wall of the tank core 5 is transferred heat to, the metal is inhaled
The inner sidewall of hot inner tube 1, the inner sidewall of the flange ring 11 and the Different diameter spring branch that is welded on 11 inner sidewall of flange ring
Heat transfer flow working medium and metallic supports 7 in the space that frame 2 four is surrounded, thermal energy a part are taken away by flow working medium,
Another part tank core 5 heats the phase-changing energy storage material 6 in tank core 5, for storing heat.
5 both ends of tank core be tip sealing structure, the tip at 5 both ends of tank core respectively with the Different diameter spring
The lesser one end overlap joint of 2 diameter of bracket, one end that the Different diameter spring bracket 2 is relatively large in diameter are welded on 11 inside of flange ring
On wall, the mechanism of the Different diameter spring bracket 2 can play the role of axial expansion due to temperature change of buffering accumulated energy core 5, keep away
Exempt to damage tank core 5 and thermal-collecting tube, the lateral wall of the tank core 5 is equipped with metal supporting frames 7, and passes through the gold
Belong to support frame 7 to be connected with the inner sidewall of metal heat absorption inner tube 1, and the tank core 5, the outer glass tube 4 and the gold
It is coaxial to belong to heat absorption 1 three of inner tube；Tank core 5 transfers heat to energy storage material by metallic supports 7 and heat transfer flow working medium
6。
The metal supporting frames 7 are including metal large circle 71, metal small circle ring 72 and are located at metal large circle 71 and metal
Spring bracing 73 between small circle ring 72, there is large circle notch 74 on metal large circle 71, has on metal small circle ring 72
The notch length of small circle ring notch 75, the large circle notch 74 and small circle ring notch 75 is the 10%- of place annulus perimeter
20%, the spring bracing 73 is 3-6 of equidistantly distributed；The metal large circle 71 and the metal small circle ring 72
Width is 10mm-20mm, and the wall thickness of the metal large circle 71 and the metal small circle ring 72 is 0.1-3mm；The gold
The outer diameter for belonging to large circle 71 is identical as the internal diameter of the metal heat absorption tube 1, the internal diameter of the metal small circle ring 72 and the energy storage
The outer diameter of core 5 is identical, and the tank core 5 is sleeved in the metal small circle ring 72, and the metal large circle 71 is sleeved on described
On 1 inner sidewall of metal heat absorption tube.Spring bracing 73 plays the role of 5 temperature change of buffering accumulated energy core and is radially expanded, and avoids
Tank core 5 and thermal-collecting tube are damaged.
3. the Packed energy storage material 6 in the inside of tank core 5 in thermal-collecting tube, heat accumulating 6 can according to caloric receptivity and temperature and
Solid-liquid phase change and liquid-gas phase transition, the tank core of sealing, which occurs, can bear the pressure of maximum 5MPa, make full use of 6 solid-liquid of energy storage material
The heat storage capacity of latent heat of phase change, liquid temperature variation sensible heat and liquid-gas phase transition latent heat.The volume of the energy storage material 6 is described
The 50%-80% of 5 total inner volume of tank core.
Energy storage material 6 is undamped, and the service life is long, can repeatedly discharge heat.6 property of energy storage material is stablized, with tank core 5 and pressure
Sensor 8 does not chemically react, not will form pollution.
6 solid-liquid phase change temperature of energy storage material is between 60~100 DEG C, and vapourizing temperature is between 250~450 DEG C.Work as temperature
When reaching solid-liquid phase change temperature, energy storage material 6 starts to melt, and continues to absorb heat and be converted to solid-liquid phase change latent heat to be deposited
Storage, after all having melted, heat accumulating 6 continues to absorb heat, and temperature increases, when temperature reaches vapourizing temperature, heat accumulation
Material 6 is begun vaporization, and is absorbed heat and is converted to liquid-gas phase transition latent heat and is stored.
4. the pressure sensor 8 in tank core 5 is connected by output pressure signal line 10 with alarm buzzer 9, the pressure
The signal output end of force snesor 8 is by the output pressure signal line 10, the input terminal phase with the alarm buzzer 9
Even, play the role of protecting thermal-collecting tube.
5. the phase-changing energy storage material 6 in tank core 5 again discharges heat in the case that rainy days or night do not have the sun
Out, the flow working medium in metal heat absorption inner tube 1 is transferred heat to, so that thermal-collecting tube continues to provide heat.
Like this, step phase-change accumulation energy high temperature straight through heat collection tube completes heat absorption, heat transfer and exothermic process.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among still in present patent application scope of protection of the claims.
Claims (9)
1. a kind of step phase-change accumulation energy high temperature straight through heat collection tube, which is characterized in that including in outer glass tube (4), metal heat absorption
(1), tank core (5), Different diameter spring bracket (2) and flange ring (11) are managed, metal heat absorption inner tube (1) is located at outside the glass
It manages between (4) and the tank core (5), and the tank core (5) is located at the inside of metal heat absorption inner tube (1)；The storage
The both ends of energy core (5) are overlapped on the Different diameter spring bracket (2), the Different diameter spring bracket (2) and the flange ring (11)
Between for welding；The both ends of the outer glass tube (4) are connect with the interface of the flange ring (11), the metal heat absorption inner tube
(1) both ends pass through the flange ring (11) and reach the outsides of the flange ring (11), metal heat absorption inner tube (1) with
It is fixedly connected between the flange ring (11).
2. step phase-change accumulation energy high temperature straight through heat collection tube according to claim 1, which is characterized in that the outer glass tube
(4) both ends are equipped with bellows (3), and one end of the bellows (3) passes through kovar alloy ring (16) and outer glass tube (4)
End sealing；The other end of the bellows (3) and the joint weld of flange ring (11)；The lower tube of the outer glass tube (4)
It is to be equipped with exhaust outlet (13) at 150mm-300mm on wall and apart from the outer glass tube (4) one end distance.
3. step phase-change accumulation energy high temperature straight through heat collection tube according to claim 2, which is characterized in that the metal heat absorption
Coating for selective absorption (14) are coated on the outer surface of inner tube (1) tube wall；The outer glass tube (4), metal heat absorption inner tube (1) and
The annulus that flange ring (11) is surrounded is vacuum space (15), the flange ring at the vacuum space (15) internal both ends
(11) on, it is respectively arranged with getter, one end is evaporable air-absorbing agent (17), and the other end is nonevaporable getter (12).
4. step phase-change accumulation energy high temperature straight through heat collection tube according to claim 3, which is characterized in that the tank core
(5) both ends be tip sealing structure, the tip at tank core (5) both ends respectively with Different diameter spring bracket (2) diameter compared with
Small one end overlap joint, one end that the Different diameter spring bracket (2) is relatively large in diameter is welded on the flange ring (11) inner sidewall；Institute
The lateral wall for stating tank core (5) is equipped with metal supporting frames (7), and is absorbed heat by the metal supporting frames (7) and the metal
The inner sidewall of inner tube (1) is connected, and the tank core (5), the outer glass tube (4) and metal heat absorption inner tube (1) three
Coaxially；Tank core (5) inner sealing is equipped with energy storage material (6), and the volume of the energy storage material (6) is the tank core
(5) 50%-80% of inner space total volume；The lateral wall of the tank core (5), metal heat absorption inner tube (1) inside
Wall, the inner sidewall of the flange ring (11) and the Different diameter spring bracket (2) four that is welded on flange ring (11) inner sidewall
The space surrounded is provided with heat transfer flow working medium.
5. step phase-change accumulation energy high temperature straight through heat collection tube according to claim 4, which is characterized in that the tank core
(5) it is equipped on inner sidewall pressure sensor (8), the output pressure signal line (10) of the pressure sensor (8) is from the storage
The sealing tip of one end of energy core (5) is drawn, and is connect with alarm buzzer (9)；The alarm buzzer (9) is located at the method
On metal heat absorption inner tube (1) lateral wall on the outside of Lan Huan (11)；The signal output end of the pressure sensor (8) is logical
The output pressure signal line (10) is crossed to be connected with the signal input part of the alarm buzzer (9).
6. step phase-change accumulation energy high temperature straight through heat collection tube according to claim 4, which is characterized in that the metal support
Frame (7) include metal large circle (71), metal small circle ring (72) and be located at metal large circle (71) and metal small circle ring (72) it
Between spring bracing (73), have large circle notch (74) on metal large circle (71), have on metal small circle ring (72) small
The notch length of annular indentation (75), the large circle notch (74) and the small circle ring notch (75) is respectively place ring week
Long 10%-20%, the spring bracing (73) are 3-6 and equidistantly distributed；The metal large circle (71) and described
The axial width of metal small circle ring (72) is 10mm-20mm, the metal large circle (71) and the metal small circle ring (72)
Wall thickness be 0.1-3mm；The outer diameter of the metal large circle (71) is identical as the internal diameter of the metal heat absorption tube (1), described
The internal diameter of metal small circle ring (72) is identical as the outer diameter of the tank core (5), and the tank core (5) is sleeved on the metal roundlet
In ring (72), the metal large circle (71) is sleeved on the metal heat absorption tube (1) inner sidewall.
7. step phase-change accumulation energy high temperature straight through heat collection tube according to claim 1, which is characterized in that the outer glass tube
(4) thickness of pipe wall is 1.8mm-3.5mm, and the outer diameter of the outer glass tube (4) is 100mm-250mm, the outer glass tube (4)
Internal diameter is 10mm-30mm bigger than the outer diameter of metal heat absorption inner tube (1)；The thickness of pipe wall of metal heat absorption inner tube (1) is 2mm-
4mm, the outer diameter of metal heat absorption inner tube (1) are 80-230mm；The thickness of pipe wall of the tank core (5) is 3mm-5mm, the storage
The outer diameter of energy core (5) is 30mm-50mm smaller than the internal diameter of metal heat absorption inner tube (1), described in the length ratio of the tank core (5)
The small 30mm-50mm of length of outer glass tube (4)；The length of the Different diameter spring bracket (2) is 20mm-40mm.
8. step phase-change accumulation energy high temperature straight through heat collection tube according to claim 5, which is characterized in that the energy storage material
(6) solid-liquid phase change temperature is between 60~100 DEG C, and vapourizing temperature is 250~450 DEG C.
9. step phase-change accumulation energy high temperature straight through heat collection tube according to claim 4, which is characterized in that the tank core
(5) pressure that can bear is up to 5MPa.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498517A (en) * | 2009-02-23 | 2009-08-05 | 四川大学 | Solar high-temperature vacuum heat-collecting tube |
| CN101762041A (en) * | 2008-10-27 | 2010-06-30 | 北京环能海臣科技有限公司 | All-glass evacuated heat collecting and accumulating tube with built-in decorated reflection lenses and condenser lenses |
| CN201652954U (en) * | 2010-04-29 | 2010-11-24 | 南京嘉业新能源有限公司 | Trough solar vacuum collector tube with built-in expansion joints |
| CN101957084A (en) * | 2010-10-18 | 2011-01-26 | 黄永年 | Heat-storage type vacuum heat collector tube |
| CN202188677U (en) * | 2011-08-18 | 2012-04-11 | 北京金阳科创太阳能技术有限公司 | Heat accumulation type vacuum tube and heat collector with same |
| CN202660793U (en) * | 2012-06-04 | 2013-01-09 | 北京清华阳光能源开发有限责任公司 | Epitaxial straight-through type solar heat absorption tube |
| CN103712357A (en) * | 2013-12-30 | 2014-04-09 | 南京诚远太阳能科技有限公司 | Heat pipe using solar energy to achieve vacuum light condensation |
| CN203771761U (en) * | 2014-04-09 | 2014-08-13 | 日出东方太阳能股份有限公司 | Elastic tube clamp for solar vacuum tube |
| CN104121709A (en) * | 2014-07-29 | 2014-10-29 | 西安交通大学 | Solar heat collector with film hole structure |
| CN104482677A (en) * | 2014-12-04 | 2015-04-01 | 李渊 | Energy storage solar heat collecting bar and solar water heater |
| CN106839456A (en) * | 2017-04-01 | 2017-06-13 | 内蒙古工业大学 | Compound many curved surface groove type solar concentrating collectors with automatic defrosting system |
| CN107101392A (en) * | 2017-05-24 | 2017-08-29 | 吴闽强 | A kind of solar vacuum heat-collecting pipe |
| JP2018091554A (en) * | 2016-12-02 | 2018-06-14 | 国立大学法人 宮崎大学 | Heat storage device |
| WO2018110740A1 (en) * | 2016-12-15 | 2018-06-21 | 주식회사엑스엘 | Evacuated solar flat plate collector |
| CN208794753U (en) * | 2018-08-13 | 2019-04-26 | 内蒙古工业大学 | A kind of step phase-change accumulation energy high temperature straight through heat collection tube |
-
2018
- 2018-08-13 CN CN201810913491.7A patent/CN108826715B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762041A (en) * | 2008-10-27 | 2010-06-30 | 北京环能海臣科技有限公司 | All-glass evacuated heat collecting and accumulating tube with built-in decorated reflection lenses and condenser lenses |
| CN101498517A (en) * | 2009-02-23 | 2009-08-05 | 四川大学 | Solar high-temperature vacuum heat-collecting tube |
| CN201652954U (en) * | 2010-04-29 | 2010-11-24 | 南京嘉业新能源有限公司 | Trough solar vacuum collector tube with built-in expansion joints |
| CN101957084A (en) * | 2010-10-18 | 2011-01-26 | 黄永年 | Heat-storage type vacuum heat collector tube |
| CN202188677U (en) * | 2011-08-18 | 2012-04-11 | 北京金阳科创太阳能技术有限公司 | Heat accumulation type vacuum tube and heat collector with same |
| CN202660793U (en) * | 2012-06-04 | 2013-01-09 | 北京清华阳光能源开发有限责任公司 | Epitaxial straight-through type solar heat absorption tube |
| CN103712357A (en) * | 2013-12-30 | 2014-04-09 | 南京诚远太阳能科技有限公司 | Heat pipe using solar energy to achieve vacuum light condensation |
| CN203771761U (en) * | 2014-04-09 | 2014-08-13 | 日出东方太阳能股份有限公司 | Elastic tube clamp for solar vacuum tube |
| CN104121709A (en) * | 2014-07-29 | 2014-10-29 | 西安交通大学 | Solar heat collector with film hole structure |
| CN104482677A (en) * | 2014-12-04 | 2015-04-01 | 李渊 | Energy storage solar heat collecting bar and solar water heater |
| JP2018091554A (en) * | 2016-12-02 | 2018-06-14 | 国立大学法人 宮崎大学 | Heat storage device |
| WO2018110740A1 (en) * | 2016-12-15 | 2018-06-21 | 주식회사엑스엘 | Evacuated solar flat plate collector |
| CN106839456A (en) * | 2017-04-01 | 2017-06-13 | 内蒙古工业大学 | Compound many curved surface groove type solar concentrating collectors with automatic defrosting system |
| CN107101392A (en) * | 2017-05-24 | 2017-08-29 | 吴闽强 | A kind of solar vacuum heat-collecting pipe |
| CN208794753U (en) * | 2018-08-13 | 2019-04-26 | 内蒙古工业大学 | A kind of step phase-change accumulation energy high temperature straight through heat collection tube |
Non-Patent Citations (2)
| Title |
|---|
| SUYING YAN: "Heat transfer property of SiO2/water nanofluid flow inside solar collector vacuum tubes", 《APPLIED THERMAL ENGINEERING》 * |
| 赵明智等: "槽式太阳能热发电技术在中国的发展现状及潜力分析", 《能源工程》 * |
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