CN105758013B - A kind of solar thermal collector for connecting pitch of holes change - Google Patents
A kind of solar thermal collector for connecting pitch of holes change Download PDFInfo
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- CN105758013B CN105758013B CN201610144573.0A CN201610144573A CN105758013B CN 105758013 B CN105758013 B CN 105758013B CN 201610144573 A CN201610144573 A CN 201610144573A CN 105758013 B CN105758013 B CN 105758013B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/72—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits being integrated in a block; the tubular conduits touching each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S2010/71—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the conduits having a non-circular cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
- F24S2010/751—Special fins
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a kind of solar thermal collector, including two pieces of tube plate structures, shape is at a certain angle between two pieces of tube plate structures, the angle direction is relative with the direction of the circular arc line structural bending of speculum, the focus of speculum is located between the angle that tube plate structure is formed, the thermal-collecting tube inside sets inner fin, the inner fin connection is rectangular diagonal, the inner fin will be divided into multiple passage aisles inside thermal-collecting tube, intercommunicating pore is set on inner fin, along two pieces of tube plate structure tie points on the extreme lower position bearing of trend of both sides, spacing between the intercommunicating pore of different thermal-collecting tubes is less and less.Present invention can ensure that different thermal-collecting tube inside keep essentially identical pressure, so as to extend thermal-collecting tube whole service life, but also the heat exchange area of thermal-collecting tube inner fin, augmentation of heat transfer can be ensured.
Description
Technical field
The invention belongs to field of solar energy, more particularly to a kind of solar thermal collector.
Background technology
With the high speed development of modern social economy, the mankind are increasing to the demand of the energy.But coal, oil, day
The traditional energy storage levels such as right gas constantly reduce, increasingly in short supply, rising steadily for price are caused, while conventional fossil fuel is caused
Problem of environmental pollution it is also further serious, these development that all limit society significantly and the raising of human life quality.The sun
Can a kind of thermal transition solar energy profit that is that energy conversion efficiency and utilization rate are high and with low cost, can be widely popularized in the whole society
Use mode.In solar energy heat utilization device, it is important to which solar radiant energy is converted into heat energy, the device of this conversion is realized
Referred to as solar thermal collector.But current solar thermal collector inside sets fin, to strengthen heat exchange.
A kind of solar thermal collector of tube-sheet type structure is given in the prior art, and because internal set fin, from
And cause the pressure to increase, in order to reduce pressure, intercommunicating pore is set on fin, but the fin and spacing of general intercommunicating pore are all
Identical, so causes the position for being heated strong to produce pressure excessive, and intercommunicating pore is not enough to play a part of to alleviate pressure, so as to lead
Cause heat collector partly because pressure-bearing is too big and service life is not long, it is therefore desirable to overcome this case.
The content of the invention
The present invention is intended to provide a kind of solar thermal collector of energy-conserving and environment-protective, improves a kind of collection for alleviating thermal-arrest overpressure
Hot device.
To achieve these goals, technical scheme is as follows：A kind of solar thermal collector, including it is thermal-collecting tube, anti-
Mirror and collecting plate are penetrated, is connected by collecting plate between two adjacent thermal-collecting tubes, so that multiple thermal-collecting tubes and adjacent thermal-arrest
Tube plate structure is formed between plate；The solar energy collector system includes two pieces of tube plate structures, between two pieces of tube plate structures
Shape is at a certain angle, and the angle direction is relative with the direction of the circular arc line structural bending of speculum, the focus position of speculum
Between the angle that tube plate structure is formed, the cross section of described thermal-collecting tube is rectangle, described collecting plate connection rectangle
Angle；
Thermal-collecting tube inside sets inner fin, and the inner fin connection is rectangular diagonal, and the inner fin is by thermal-arrest
It is divided into multiple passage aisles inside pipe, intercommunicating pore is set on inner fin, so that adjacent passage aisle communicates with each other；
Along two pieces of tube plate structure tie points on the extreme lower position bearing of trend of both sides, the intercommunicating pore of different thermal-collecting tubes it
Between spacing it is less and less.
Preferably, along two pieces of tube plate structure tie points on the extreme lower position bearing of trend of both sides, different thermal-collecting tubes
The less and less amplitude of spacing constantly increases between intercommunicating pore.
Preferably, the connection bore dia in all thermal-collecting tubes is identical.
Preferably, the angle between two tube plate structures is less than 150 degree.
Preferably, described thermal-collecting tube cross-sectional area is square, the foursquare a length of L of inner edge, the connection
Kong Weiyuan, the radius r of the intercommunicating pore, the distance between adjacent intercommunicating pore center of circle is l on the same fin, is met as follows
Relation：
l/L*10=a*ln(r/L*10)+b；
Wherein ln is logarithmic function, and a, b are parameter, 1.5<a<1.6,2.9<b<3.0;
0.34<l/L<0.38;
0.14<r/L<0.17;
30mm<L<120mm；
5mm<r<17mm。
Compared with prior art, the present invention has the advantage that：
1）There is provided a kind of solar thermal collector of Novel structure, it is ensured that different thermal-collecting tube inside keep essentially identical
Pressure, so as to extend thermal-collecting tube whole service life, but also the heat exchange area of thermal-collecting tube inner fin can be ensured, reinforcing pass
Heat.
2) changed by the rule of the area of the through hole in thermal-collecting tube, the Heat-collecting effect and flow resistance being optimal.
3）The present invention, in the case where ensureing that heat exchange amount is maximum and flow resistance satisfaction is required, is obtained by test of many times
To an optimal solar thermal collector optimum results, and by being verified, so as to demonstrate the accurate of result
Property.
Brief description of the drawings
Fig. 1 is the structural representation of solar thermal collector of the present invention；
Fig. 2 is thermal-collecting tube cross-sectional structure schematic diagram of the present invention；
Fig. 3 is inner fin intercommunicating pore distribution schematic diagram of the present invention；
Fig. 4 is inner fin intercommunicating pore stagger arrangement distribution schematic diagram of the present invention；
Fig. 5 is square dimensions schematic diagram in thermal-collecting tube of the present invention.
Reference is as follows：
1 speculum, 2 thermal-collecting tubes, 3 collecting plates, 4 inner fins, 5 intercommunicating pores, 6 passage aisles.
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with the accompanying drawings.
Fig. 1 illustrates a kind of solar thermal collector, and the heat collector includes thermal-collecting tube 2, speculum 1 and collecting plate 3, adjacent
Two thermal-collecting tubes 2 between connected by collecting plate 3 so that forming tube sheet between multiple thermal-collecting tubes 2 and adjacent collecting plate 3
Structure；The solar energy collector system includes two pieces of tube plate structures, and shape is at a certain angle between two pieces of tube plate structures,
The angle direction is relative with the direction of the circular arc line structural bending of speculum, and the focus D of speculum 1 is formed positioned at tube plate structure
Angle between.
Used as an improvement, the cross section of described thermal-collecting tube 2 is rectangle, and described collecting plate 3 connects rectangular
Angle.
Prior art typically all uses circular tube structure, but finds to use circular tube structure in practice, for two pipes
Between distance it is closer when because the distance between two close circular arcs very little so that two adjacent parts of pipe cannot
Fully absorb solar energy.And the present invention overcomes the shortcoming of circular tube structure by setting thermal-collecting tube cross section for rhs-structure,
So that there is more space for pipe between adjacent thermal-collecting tube 2, from top irradiation and bottom reflection so that too
It is positive to reflect into, it is uniform so as to reach heat absorption, from other angle reflections, for pipe, it is also possible to reach suction
Receive the purpose of more heats.
Preferably, the cross section of described thermal-collecting tube 2 is square.
Traditional heat collector is all that thermal-collecting tube is set directly in focus, once position shifts, then heat is not just
Can thermal-arrest in thermal-collecting tube, by said structure, sunlight reflexes to tube plate structure in speculum 1 by speculum 1,
By in the thermal-collecting tube 2 in heat thermal-arrest to tube plate structure.By this structure, even if because installation or operation problem cause pipe
Plate locations of structures changes, then solar energy still can thermal-arrest in thermal-collecting tube 2, so as to avoid thermal loss；Simultaneously as passing
The heat collector of system is all that thermal-collecting tube is set directly in focus, causes thermal-collecting tube hot-spot, causes thermal-collecting tube local losses
Excessive, the life-span is too short, or even causes thermal-collecting tube over-heat inside, produces superheated steam, full of whole thermal-collecting tube, causes in thermal-collecting tube
Portion's pressure is excessive, damage thermal-collecting tube, and takes the structure of the application, both can sufficiently absorb heat, again can be by heat
Relative dispersion, it is to avoid heat is excessively concentrated so that overall thermal-collecting tube heat absorption is uniform, extends the service life of thermal-collecting tube.
As one preferably, the focus D of speculum 1 is located on two pieces of midpoints of tube plate structure least significant end line.By upper
Setting is stated, it is ensured that absorb solar energy to the full extent, it is to avoid solar energy loses because of focal shift, while also ensuring
Platy structure is tried one's best the sunlight for being likely to reduced the irradiation blocked on speculum 1.It is experimentally confirmed, using said structure, too
The absorbent effect of sun is best.
Preferably, the inside of the thermal-collecting tube 2 sets inner fin 4, the inner fin 4 connects rectangular diagonal, such as Fig. 2
It is shown.The inner fin 4 will be divided into multiple passage aisles 6 inside thermal-collecting tube 2, intercommunicating pore 5 be set on inner fin, so that adjacent
Passage aisle 6 communicate with each other.
By setting inner fin 4, multiple passage aisles 6 will be divided into inside thermal-collecting tube 2, further augmentation of heat transfer, but accordingly
Flow of fluid pressure increase.By setting intercommunicating pore 5, it is ensured that the connection between adjacent passage aisle 6, so that pressure
Fluid in big passage aisle can flow in the small passage aisle of neighbouring pressure, solve each small flow channels of inside of condensation end
The problem that 27 pressure are uneven and local pressure is excessive, so as to promote abundant flowing of the fluid in heat exchanger channels, while
By the setting of intercommunicating pore 5, the pressure inside thermal-collecting tube is also reduced, improve heat exchange efficiency, while also improving thermal-collecting tube
Service life.
Preferably, along the flow direction of fluid in thermal-collecting tube 2, the area of the intercommunicating pore 5 constantly increases.
Described intercommunicating pore 5 is circular configuration, along the flow direction of fluid in thermal-collecting tube 2, the half of the circular configuration
Footpath constantly increases.
Because along the flow direction of fluid in thermal-collecting tube 2, the fluid in thermal-collecting tube 2 constantly even evaporate by heat absorption, because
This causes that the pressure of thermal-collecting tube constantly increases, and because the presence of intercommunicating pore 5 so that the pressure distribution inside thermal-collecting tube 2
It is more and more uniform, therefore the area needs of intercommunicating pore are very big, constantly become greatly by setting, so that ensureing inside heat pipe
In the case of the uniform pressure of pressure, increase heat exchange area by connecting the change of hole area, so as to improve heat exchange efficiency.
Preferably, along the flow direction of fluid in thermal-collecting tube 2, the continuous increased amplitude of area of the intercommunicating pore 5
It is continuously increased.It is also the Changing Pattern for meeting flowing pressure by being arranged such, while further reducing flow resistance, carries
Heat exchange efficiency high.By being arranged such, by being that experiment finds that 9% or so heat exchange efficiency can be improved, while resistance is protected substantially
Hold constant.
Preferably, along the flow direction of fluid in thermal-collecting tube 2, the distributed quantity of intercommunicating pore 5 is more and more, further excellent
Choosing, constantly increased amplitude is continuously increased the connection hole number 26.
Distribution Principle by above-mentioned quantity is identical with area reduction principle, compared with connection hole number is identical, leads to
Distributed number is crossed to reduce circulation area.
In actual experiment find, the area of intercommunicating pore 5 can not be too small, it is too small if can cause the increase of flow resistance,
So as to cause the decrease of heat exchange, the area of intercommunicating pore 5 can not be excessive, and area is excessive, can cause the reduction of heat exchange area, so as to drop
Low heat transfer effect.Equally, the cross-sectional area of thermal-collecting tube 2 can not be excessive, excessive to cause what is be distributed in tube plate structure unit length to change
Heat pipe is very few, again results in heat transfer effect variation, and thermal-collecting tube flow area can not be too small, too small that flow resistance can be caused to increase
Plus, so as to cause heat transfer effect to be deteriorated.Therefore between intercommunicating pore 5 and thermal-collecting tube cross-sectional area and its adjacent intercommunicating pore 5 away from
From must being fulfilled for certain requirement.
Therefore, the present invention be by the thousands of numerical simulations and test data of multiple various sizes of heat collectors,
In the case of meeting industrial requirements pressure-bearing（Below 10MPa）, in the case where maximum heat exchange amount is realized, the optimal thermal-arrest for summing up
The dimensionally-optimised relation of device.
The present invention is that the cross section of heat collector pipe 2 is carry out under square dimensionally-optimised.
The foursquare interior length of side（The i.e. foursquare outer length of side subtracts wall thickness）It is L, the radius r of the intercommunicating pore, institute
The distance between intercommunicating pore adjacent on same fin is stated for l, following relation is met：
l/L*10=a*ln(r/L*10)+b；
Wherein ln is logarithmic function, and a, b are parameter, 1.5<a<1.6,2.9<b<3.0;
0.34<l/L<0.38;
0.14<r/L<0.17;
30mm<L<120mm；
5mm<r<17mm。
Wherein, l is equal to the distance between center of circle of adjacent intercommunicating pore 5.Left and right as shown in Figure 3,4 is adjacent and neighbouring
The distance between intercommunicating pore center of circle.
Further preferably, 15mm<l<45mm.
Preferably, with the increase of r/L, described a, b increases.
Preferably, a=1.57, b=2.93.
Preferably, the l and r of same thermal-collecting tube select average l and r.
Preferably, as shown in Figure 3,4, multiple rows of intercommunicating pore 5 is set on each inner fin, as shown in figure 4, the multiple company
Through hole 5 is wrong row's structure.By mistake, row connects structure, can further improve heat exchange, reduces pressure.
Preferably, the diameter of the intercommunicating pore 5 in the different inner fins 4 of thermal-collecting tube 2 is differed.Connect along two pieces of tube plate structures
Contact（That is extreme higher position）To both sides extreme lower position（I.e. Fig. 2 thermal-collecting tubes A is to B, C direction）On bearing of trend, different thermal-collecting tubes 2
The diameter of intercommunicating pore 5 is increasing.Find in an experiment, extend from middle part to both sides, caloric receptivity gradually rises, and is led by analyzing
Reason is wanted because there is the stop of tube plate structure, causes middle part to be heated minimum, and extended from middle part to both sides, absorb heat gradually
Raise, so as to cause the pressure of fluid flow inside increasing.Continuous change by the diameter of intercommunicating pore 5 is big, so that
The intercommunicating pore gross area constantly becomes big, and the diameter of intercommunicating pore can be set according to the internal pressure of diverse location thermal-collecting tube 2 to delay
Decompression force constantly changes, and on the one hand can so ensure that different thermal-collecting tube inside keep essentially identical pressure, so as to extend
Thermal-collecting tube whole service life, but also the heat exchange area of thermal-collecting tube inner fin, augmentation of heat transfer can be ensured.
Preferably, along two pieces of tube plate structure tie points（That is extreme higher position）To both sides extreme lower position（That is Fig. 2 thermal-collecting tubes
A is to B, C direction）On bearing of trend, the amplitude that the diameter of the intercommunicating pore 5 of different thermal-collecting tubes 2 is increasing constantly increases.
Find in an experiment, for caloric receptivity, along the middle part of tube plate structure（That is extreme higher position）To both sides extreme lower position
（I.e. Fig. 2 thermal-collecting tubes A is to B, C direction）Amplification on bearing of trend is gradually successively decreased, therefore connection hole area has been done into such change,
To meet corresponding requirement.
Preferably, the connection hole area of maximum is less than 1.27 with the ratio of the connection hole area of minimum.
Preferably, the connection hole number in each thermal-collecting tube is identical.
Preferably, each connection hole area is identical in same thermal-collecting tube.
For preferred, the spacing between intercommunicating pore 5 in the inner fin 4 of different thermal-collecting tubes 2 is differed.Along two pieces of tube sheet knots
Structure tie point（That is extreme higher position）To both sides extreme lower position（I.e. Fig. 2 thermal-collecting tubes A is to B, C direction）On bearing of trend, different thermal-arrests
Spacing between the intercommunicating pore 5 of pipe 2 is less and less.Find in an experiment, extend from middle part to both sides, caloric receptivity gradually rises
Height, by analyzing main cause because there is the stop of tube plate structure, causes middle part to be heated minimum, and prolongs to both sides from middle part
Stretch, absorb heat and gradually rise, so as to cause the pressure of fluid flow inside increasing.Between between intercommunicating pore 5
Away from constantly diminish so that the intercommunicating pore gross area constantly becomes big, can according to the internal pressure of diverse location thermal-collecting tube 2 come
The diameter for setting intercommunicating pore constantly changes alleviating pressure, on the one hand can so ensure that different thermal-collecting tubes inside keep substantially
Identical pressure, so as to extend thermal-collecting tube whole service life, but also can ensure the heat exchange area of thermal-collecting tube inner fin, by force
Change heat transfer.
Preferably, along two pieces of tube plate structure tie points（That is extreme higher position）To both sides extreme lower position（That is Fig. 2 thermal-collecting tubes
A is to B, C direction）On bearing of trend, the less and less amplitude of spacing constantly increases between the intercommunicating pore 5 of different thermal-collecting tubes 2.
Find in an experiment, for caloric receptivity, along the middle part of tube plate structure（That is extreme higher position）To both sides extreme lower position
（I.e. Fig. 2 thermal-collecting tubes A is to B, C direction）Amplification on bearing of trend is gradually successively decreased, thus by the spacing between intercommunicating pore done as
This change, to meet corresponding requirement.
Preferably, the connection bore dia in all thermal-collecting tubes is identical.
Preferably, the angle between two tube plate structures is less than 150 degree.
Preferably, the connection pitch of holes in same thermal-collecting tube is all identical.
Preferably, the fluid flow in different thermal-collecting tubes is different.Along two pieces of tube plate structure tie points（That is highest order
Put）To both sides extreme lower position（I.e. Fig. 2 thermal-collecting tubes A is to B, C direction）On bearing of trend, the fluid flow in different thermal-collecting tubes 2 is got over
Come bigger.Find in an experiment, extend from middle part to both sides, caloric receptivity gradually rises.By the change of fluid flow, so that
Obtain all thermal-arrest tube fluid heating-up temperatures essentially identical, so that fluid keeps uniform mixed degree, it is to avoid heat in fluid mixing
The loss of amount, can equally ensure that thermal-collecting tube temperature keeps identical substantially, identical service life be reached, so as to extend thermal-collecting tube
Whole service life.
Preferably, along two pieces of tube plate structure tie points（That is extreme higher position）To both sides extreme lower position（That is Fig. 2 thermal-collecting tubes
A is to B, C direction）On bearing of trend, the amplitude that the fluid flow of different thermal-collecting tubes 2 is increasing constantly becomes big.
Find in an experiment, for caloric receptivity, along the middle part of tube plate structure（That is extreme higher position）To both sides extreme lower position
（I.e. Fig. 2 thermal-collecting tubes A is to B, C direction）Amplification on bearing of trend is gradually successively decreased, therefore thermal-collecting tube flow has been done into such change,
To meet corresponding requirement.
Preferably, cross-sectional area is different in the pipe of different thermal-collecting tubes.Along two pieces of tube plate structure tie points（That is highest order
Put）To both sides extreme lower position（I.e. Fig. 2 thermal-collecting tubes A is to B, C direction）On bearing of trend, cross-sectional area is more next in the pipe of thermal-collecting tube 2
It is bigger.Find in an experiment, extend from middle part to both sides, caloric receptivity gradually rises.By the change of fluid flow, so that
All thermal-arrest tube fluid heating-up temperatures are essentially identical, so that fluid keeps uniform mixed degree, it is to avoid heat in fluid mixing
Loss, can equally ensure that thermal-collecting tube temperature keeps identical substantially, identical service life is reached, so that it is whole to extend thermal-collecting tube
Body service life.
Preferably, along two pieces of tube plate structure tie points（That is extreme higher position）To both sides extreme lower position（That is Fig. 2 thermal-collecting tubes
A is to B, C direction）On bearing of trend, the increasing amplitude of cross-sectional area constantly becomes big in the pipe of thermal-collecting tube 2.
The thermal-collecting tube cross-sectional area is square.
The foursquare interior length of side（The i.e. foursquare outer length of side subtracts wall thickness）It is L, along two pieces of tube plate structure tie points（I.e.
Extreme higher position）To both sides extreme lower position（I.e. Fig. 2 thermal-collecting tubes A is to B, C direction）L is increasing on bearing of trend.
Preferably, along two pieces of tube plate structure tie points（That is extreme higher position）To both sides extreme lower position（That is Fig. 2 thermal-collecting tubes
A is to B, C direction）On bearing of trend, the amplitude that the L of thermal-collecting tube 2 is increasing constantly becomes big.
Preferably, the material of thermal-collecting tube 2 and collecting plate 3 is albronze, the quality hundred of the component of the albronze
Divide ratio as follows：3.7% Cr, 3.3% Ag, 2.2% Mn, 1.25% Zr, 1.23% Ce, 1.25% Ti,
2.46% Si, remaining is Cu, Al, and the ratio of Cu, Al is（8.53-10.23）:1.12.
The manufacture method of albronze is：Using vacuum metallurgy melting, argon for protecting pouring is equal by 820 DEG C into round billet
Treatment is homogenized, at 640 DEG C, using bar is hot extruded into, then again by after 565 DEG C of solution hardening, when carrying out artificial for 230 DEG C
Effect treatment.
After tested, above-mentioned alloy has thermal conductivity factor very high, and thermal conductivity factor is more than 250W/ (m*k）.
By increasing the ratio of copper in albronze, the heat resistance of alloy is greatly increased, while also improving the anti-of alloy
Rotten performance.
Preferably, the thermal-collecting tube 2 and the external coated anticorrosive coat of collecting plate 3.
Preferably, the anticorrosive coat is generated by anticorrosive paint, anticorrosive paint is by as follows into being grouped into：Zinc flake
8.3%, aluminum oxide is 8%, and boric acid is 7.3%, and acrylic acid is 0.7%, and wetting dispersing agent is 0.4%, and thickener is
0.15%, defoamer is 0.23%, the water of surplus.
A kind of method for preparing above-mentioned water-based anticorrosive paint, the method is implemented according to following steps,
A, by coating gross mass percentage, a certain amount of water, 0.4% wetting dispersing agent and 0.23% are weighed respectively and are disappeared
Infusion, it is then admixed together, it is sufficiently stirred for being allowed to dissolving and is made coating mixed liquor A 1, then coating is accounted for being added in mixed liquor A 1
The flake metal powder of the 8.3% of gross mass, stirs and is made coating mixed liquor A 2；
B, by coating gross mass percentage, weigh 7.3% boric acid, constitute mixed liquor, be added in 20%~40% water
Fully dissolving is made inorganic acid mixed liquid B 1, then to 8% oxidate powder is added in mixed liquid B 1, stirring is extremely made nothing without precipitation
Machine acid mixed liquid B 2；
C, by coating gross mass percentage, weigh 0.7% acrylic acid, be added in 5%~15% water, be sufficiently stirred for
Uniformly it is made reducing agent mixed liquor C；
D, by coating gross mass percentage, weigh 0.15% thickener hydroxyethyl cellulose, be added to 2.5%~15%
Water in, stirring to dissolving be translucent shape and without gel occur i.e. stopping stirring being made thickener mixed liquor D；
E, the inorganic acid mixed liquid B 2 of preparation is added in coating mixed liquor A 2, is subsequently adding reducing agent mixed liquor C and matches somebody with somebody
The 1/5~1/2 of amount processed, adds thickener mixed liquor D while stirring, adds the water of surplus, continues stirring 30~90 minutes, directly
To coating mixed liquor uniformity soilless sticking particle, remaining reducing agent mixed liquor C is finally added, be stirred for 10~40
Minute, obtain final product.
This kind of coating is applied over fin pipe surface by spraying, brushing, dip-coating, and 80 ± 10 DEG C dry 10~60 minutes, 280
± 40 DEG C of solidifications are sintered 30~60 minutes, form good anti-corrosion coating.
The wetting dispersing agent is the SA-20 in peregal series, and described thickener selects hydroxyethyl cellulose；It is described
Defoamer select tributyl phosphate.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should
It is defined when by claim limited range.
Claims (4)
1. a kind of solar thermal collector, including thermal-collecting tube, speculum and collecting plate, pass through thermal-arrest between two adjacent thermal-collecting tubes
Plate is connected, so that forming tube plate structure between multiple thermal-collecting tubes and adjacent collecting plate；The solar energy collector system bag
Two pieces of tube plate structures are included, shape is at a certain angle between two pieces of tube plate structures, the circular arc of the angle direction and speculum
The direction of cable architecture bending is relative, and the focus of speculum is located between the angle that tube plate structure is formed, the horizontal stroke of described thermal-collecting tube
Section is rectangle, and described collecting plate connects rectangular angle；
The thermal-collecting tube inside sets inner fin, and the inner fin connection is rectangular diagonal, and the inner fin is by thermal-collecting tube
Part is multiple passage aisles, intercommunicating pore is set on inner fin, so that adjacent passage aisle communicates with each other；
Characterized in that, along two pieces of tube plate structure tie points on the extreme lower position bearing of trend of both sides, the company of different thermal-collecting tubes
Spacing between through hole is less and less.
2. solar thermal collector as claimed in claim 1, extends along two pieces of tube plate structure tie points to both sides extreme lower position
On direction, the less and less amplitude of spacing constantly increases between the intercommunicating pore of different thermal-collecting tubes.
3. the solar thermal collector as described in one of claim 1-2, the connection bore dia in all thermal-collecting tubes is identical.
4. the solar thermal collector as described in one of claim 1-2, the angle between two tube plate structures is less than 150 degree.
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| CN201610144573.0A CN105758013B (en) | 2016-03-15 | 2016-03-15 | A kind of solar thermal collector for connecting pitch of holes change |
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| CN201610144573.0A CN105758013B (en) | 2016-03-15 | 2016-03-15 | A kind of solar thermal collector for connecting pitch of holes change |
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| CN105758013B true CN105758013B (en) | 2017-06-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404871A (en) * | 2018-04-20 | 2019-03-01 | 青岛宝润科技有限公司 | A kind of solar steam generator of connection tube spacing variation |
| CN109404872A (en) * | 2018-04-20 | 2019-03-01 | 青岛宝润科技有限公司 | A kind of solar steam generator of Diameter of connecting pipe variation |
| CN109827162A (en) * | 2018-04-20 | 2019-05-31 | 青岛宝润科技有限公司 | A kind of new-type heat pipe structure solar steam generator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740960Y (en) * | 2004-10-29 | 2005-11-16 | 崔锦纲 | Modular solar heat collector |
| CN104764223B (en) * | 2014-07-17 | 2016-05-11 | 赵炜 | The arc tube plate-type solar thermal collector system that a kind of caliber changes |
| CN105387637B (en) * | 2015-12-23 | 2016-09-07 | 闵邦政 | A kind of inner fin heat-collecting tube solar water heater |
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2016
- 2016-03-15 CN CN201610144573.0A patent/CN105758013B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404871A (en) * | 2018-04-20 | 2019-03-01 | 青岛宝润科技有限公司 | A kind of solar steam generator of connection tube spacing variation |
| CN109404872A (en) * | 2018-04-20 | 2019-03-01 | 青岛宝润科技有限公司 | A kind of solar steam generator of Diameter of connecting pipe variation |
| CN109827162A (en) * | 2018-04-20 | 2019-05-31 | 青岛宝润科技有限公司 | A kind of new-type heat pipe structure solar steam generator |
| CN109404871B (en) * | 2018-04-20 | 2019-10-22 | 青岛佰腾科技有限公司 | A kind of solar steam generator of connection tube spacing variation |
| CN109404872B (en) * | 2018-04-20 | 2020-02-11 | 青岛宝润科技有限公司 | Solar steam generator with variable pipe diameter of communicating pipe |
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|---|---|
| CN105758013A (en) | 2016-07-13 |
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