CN2238999Y - Anti-spalling double-open vacuum pipe heating collector with solar parabolic reflecting surface - Google Patents
Anti-spalling double-open vacuum pipe heating collector with solar parabolic reflecting surface Download PDFInfo
- Publication number
- CN2238999Y CN2238999Y CN95211721U CN95211721U CN2238999Y CN 2238999 Y CN2238999 Y CN 2238999Y CN 95211721 U CN95211721 U CN 95211721U CN 95211721 U CN95211721 U CN 95211721U CN 2238999 Y CN2238999 Y CN 2238999Y
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- China
- Prior art keywords
- parabolic reflector
- heat collection
- solar energy
- tube
- vacuum
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- Expired - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The utility model relates to an anti-spalling double-open vacuum pipe heating collector with a solar parabolic reflecting surface. In the utility model, a circulation pipe line whose inner part is provided with working fluid can do heat collection, and the anti-spalling double-open vacuum heat collection pipe of the circulation pipe line and a connecting pipe can be connected in series in a horizontal mode to reduce the voltage drop of the working fluid which is caused by heat absorption upward float. An outward (inward) circular arc bulge can be arranged on the both ends of an inner pipe which are close to a sealed proper distance for anti-spalling. The utility model can not be clogged because of the double-open, and can increase heat collection efficiency because of the great spotlight effect of the parabolic reflecting surface. Compared with a traditional single-open vacuum pipe heating collector, the utility model has lower cost and can do proper adjustment according to seasons, and can also make different illumination slant angles.
Description
The utility model is about a kind of solar thermal collector, especially cooperate parabolic reflector combination results spotlight effect big about a kind of pair of opening vacuum tube, increase thermal-arrest usefulness, and can not stop up, cost reduces, also can be with the two opening vacuum tube collectors of the solar energy parabolic reflector expansion cracking proof of doing season suitably to adjust.
See also shown in Figure 1, be the solar vacuum heat-collecting pipe 80 in using now on the market, mostly the structure of its pipe is upper end open, lower end closed, and have interior, in, three pipes 81,82,83 such as outer, be coated with the last layer selective absorbing film in intervalve 82 outer surfaces, and keep enough distances between intervalve 82 and the outer tube 83, vacuumized then and sealed after forming a vacuum layer 84; Cold water is to introduce tiny interior pipe 81 inside along the direction of arrow by an end 86 of interior pipe 81, and then flow out to the passage 85 of 82 of pipes 81 and intervalve in this by the other end 87 of interior pipe 81, absorb solar thermal energy, and reflux out outside the thermal-collecting tube 80 via this passage 85, flow out extraneous by a hot water outlet pipe 88 at last.Right its shortcoming can be accumulated incrustation scale for when being used in natural recirculating type, if do not removed for a long time, incrustation scale can stop up the port of export 87 of tiny interior pipe 81.If be used for the forced cyclic type collecting system, the hot and cold water of system is mixed, seriously reduce collecting efficiency.In addition, because inner and outer pipe 81, the 83 normal difference spallings easily of vacuum heat collection pipe 80 because of the material coefficient of expansion.
Business-like now parabolic reflector vacuum tube collector, its reflecting surface is concentrated than being more than 32: 1, necessary tracking sunlight, Sydney University, Australia is in the parabolic reflector vacuum tube collector of developing recently, and the concentrated ratio of its parabolic reflector is 8: 1, can tracking sunlight, as long as do seasonal adjustment, but its shortcoming is for being difficult for volume production, and the driving fit between its copper pipe and glass tube must have expensive device, and cost is higher.
Main purpose of the present utility model is the selective absorbing film that utilizes the vacuum heat collection pipe of two openings and be plated on inner tube outer surface, vacuum tube collector can not stopped up, and spotlight effect is big, increases thermal-arrest usefulness, and cost reduces.
Of the present utility model time a purpose provides a kind of horizontal and mat tube connector connection series connection with two opening vacuum heat collection pipes, makes working fluid can reach higher temperature because of connecting continuously.
A purpose more of the present utility model provide a kind of needn't tracking sunlight, only need with the two opening vacuum tube collectors of the solar energy parabolic reflector expansion cracking proof of doing season suitably to adjust.
Another purpose of the present utility model is to use plastic material to plate layer of aluminum as reflecting surface, with the two opening vacuum tube collectors of the solar energy parabolic reflector expansion cracking proof that reduces manufacturing cost.
Another purpose of the present utility model is the suitable distance of close sealing at interior pipe two ends, has the circular arc projection of outside (or inside), to prevent spalling.
The technological means of this case is to utilize the vacuum heat collection pipe of the two openings of expansion cracking proof, use and overcome the shortcoming that above-mentioned traditional solar vacuum heat-collecting pipe is derived, only may float because of heat absorption because of the working fluid in two opening vacuum heat collection pipes, and if vacuum tube uprightly is one another in series side by side, can produce increases the problem that pressure drop can't circulate smoothly, so the further horizontal and mat tube connector series connection with vacuum heat collection pipe of this case.The vacuum heat collection pipe of this case has inner and outer pipe, and two ends of pipe are opening in this, and are interconnected with a tube connector respectively; And inner tube outer surface is coated with one deck selective absorbing film, to increase heat collection function, should in the pipe two ends respectively have two outwards (or inwardly) circular arc projection be with expansion cracking proof, so the side constitutes the framework of whole vacuum tube collector, spotlight effect is big, increases thermal-arrest usefulness, can not stop up, cost reduces, also can be with the function of doing season suitably to adjust.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet described accompanying drawing only for reference with usefulness is described, and be not to be used for the utility model is done any restriction; Relevant accompanying drawing is:
Fig. 1 is the cross section view of existing solar vacuum heat-collecting pipe;
Fig. 2 opens the suitable stereogram of twoport vacuum tube thermal-arrest for solar energy parabolic reflector expansion cracking proof of the present utility model;
Fig. 3 is the cut-away section view of thermal-arrest assembly in the two opening vacuum tube collectors of solar energy parabolic reflector expansion cracking proof of the present utility model;
Fig. 4 is another embodiment schematic diagram of the thermal-arrest assembly of the two opening vacuum tube collectors of solar energy parabolic reflector expansion cracking proof of the present utility model;
Fig. 5 is the first embodiment cutaway view of the two opening vacuum tube collectors of solar energy parabolic reflector expansion cracking proof of the present utility model; And
Fig. 6 is the second embodiment cutaway view of the two opening vacuum tube collectors of solar energy parabolic reflector expansion cracking proof of the present utility model.
See also the stereogram of the two opening vacuum tube collectors of solar energy parabolic reflector expansion cracking proof of the present utility model shown in Figure 2, this vacuum tube collector comprises: several thermal-arrest assemblies 10, a support 20, a circulation line 30, a lowering or hoisting gear 40.These several thermal-arrest assemblies 10 are to be fixed on this support 20, and are more appropriate to be provided with about three usually.30 of this circulation lines are covered with on these several thermal-arrest assemblies 10.Wherein in this circulation line 30 working fluid is arranged, can utilize the drive unit 50 of pump to make forced circulation or utilize and meet that heat density diminishes and the natural circulation mode circulation (for water) that rises.This drive unit 50 is able to a differential temperature controller (not shown) and is controlled at design temperature and just makes forced circulation one time, and the workflow physical efficiency is moved in endless cycles in this circulation line 30.This working fluid can be water, air or heat kerosene, wherein can do the Natural Circulation except water, and other all makes forced circulation.The flow direction of this working fluid, as shown in Figure 2, this working fluid after finishing heat exchange, visual sunlight strength and select directly to deliver to a heat-storing device (not shown) and store, or deliver to another group vacuum tube collector and proceed heat exchange.
The bottom of this support 20 is to connect a lowering or hoisting gear 40.This lowering or hoisting gear 40 is a driving screw device, and it is that a driving screw 41 reaches the adjustment nut 43 that cooperates with it, but because of it is a prior art, its structure does not repeat them here.This driving screw 41 can connect a drive unit 42, makes this driving screw 41 can adjust the angle of inclination of this heat collector 10 with the automatic or manual dual mode.
Please consult Fig. 2 and Fig. 3 simultaneously, this thermal-arrest assembly 10 is to have a casing 11, a parabolic reflector 12, to be located at this circulation line 30 that the heat-insulation layer 13, of 12 of this casing 11 and this parabolic reflectors is covered on the transparent cover 14 on this casing 11 and is located on this thermal-arrest assembly 10 and is connected to by these several vacuum heat collection pipes 15 and two tube connectors 16,17.
The material of this parabolic reflector 12 is precast monolithic moulding material (the Bulk Molding Compound that belong to injection mo(u)lding thermosetting material, be called for short BMC), or add that with Merlon (PC) propylene-BS (ABS) or fourth two-styrol copolymer add that the material 121 of UV resistant agent makes, and in surperficial evaporation layer of aluminum 122, so can reduce the manufacturing cost of thermal-arrest assembly 10, and reach same effect.The diameter of section of this parabolic reflector 12 is below 10: 1 with the inner tube diameter ratio of this vacuum heat collection pipe 15, and the position of this vacuum heat collection pipe 15 must just place the light reflector focus place of this parabolic reflector 12.This parabolic reflector 12 can must not have tracker to adjust lighting angle at any time and need not resemble prior art with the variation that remakes the illumination angle of inclination season.The light transmittance of this transparent cover 14 must be good, and material is preferable with impact-resistant tempered glass.
This circulation line 30 can be fixed on this casing 11.This circulation line 30 is to be made of several vacuum heat collection pipes 15 and 16,17 of two tube connectors.The quantity of these vacuum heat collection pipes 15 is the quantity corresponding to this parabolic reflector 12, and this vacuum heat collection pipe 15 just is positioned on the optically focused collection point of this parabolic reflector 12, and quantity serves as appropriate with three to five/sheet relatively.
This vacuum heat collection pipe 15 is two opening pipe fittings of both ends open, and has inside and outside two pipes 151,152.Pipe 151 surfaces are coated with the last layer selective absorbing film in this, increasing Heat-collecting effect, and in this enough distances of maintenance between pipe 151 and this outer tube 152, and to be sealed into vacuum after vacuumizing be 10
-2Torr～10
-6Torr, make this inner and outer pipe 151,152 between become vacuum state, and form a vacuum layer 153, this vacuum layer 153 is not in order to the transportation work fluid, its function is to be to improve heat insulation effect and to promote the thermal efficiency.
All have several short tubes 161 on this two tube connector 16,17, this short tube 161 can be a glass tube.Opening two ends of this vacuum heat collection pipe 15 are to utilize silica gel sleeve pipe (not shown) to be connected with these short tubes 161 of this two tube connector 16,17.The structure of this two tube connector 16,17 is to be aluminum pipe, the heat insulation material of outsourcing, and outer coating stainless steel skin.Support 20 by this thermal-arrest assembly 10 supports simultaneously, and the stream tail end that can make this vacuum heat collection pipe 15 is a little more than its stream front end.The caliber of these short tubes 161 is slightly larger than the external diameter of pipe of this vacuum heat collection pipe 15.
These thermal-arrest assemblies 10 can need and the vacuum heat collection pipe 15 of series connection right quantity according to temperature.This vacuum collector can expand several to dozens of again on demand.
As shown in Figure 2, these thermal-arrest assemblies 10 are vertically to be connected with this tube connector 16,17 in twos, and workflow cognition is difficult to circulation because of the back of absorbing heat forms the steam come-up in the time of so can avoiding vacuum tube uprightly to be perpendicular to one another series connection side by side.
See also Fig. 4, this figure is another embodiment schematic diagram of the thermal-arrest assembly of the two opening vacuum tube collectors of solar energy parabolic reflector expansion cracking proof of the present utility model, circulation line 30 is directly to be in series with these thermal-arrest assemblies 10 and these tube connectors 16, and 10 of this thermal-arrest assemblies comprise that several vacuum heat collection pipes 15 and this tube connector 16 are in series.Aforementioned these tube connectors 16 are all tightened with anti-leak with a tube bank 18 with the suit place of these thermal-arrest assemblies 10 or vacuum heat collection pipe 15.
Fig. 5,6 is respectively first embodiment of the two opening vacuum tube collectors of solar energy parabolic reflector expansion cracking proof of the present utility model and the cutaway view of second embodiment, two ends of pipe 151 in this, apart from the suitable distance of sealing, the bend 61c that the circular arc projection outwards or is inwardly arranged, when selective absorbing film 9 is a high-performance, the vacuum height when causing these inner and outer pipe 151,152 temperature difference big, must have the expansion space and unlikely spalling.
Pipe 151 is at the bend 61c of nearly two ends place's formation circular arc projection in being somebody's turn to do, be when these inner and outer pipe 151,152 temperature difference are huge between the operating period, (about 50 ℃ of general outer tube, and about 250～300 ℃ of interior pipe), should 151 the expansions of interior pipe can be absorbed, avoid this vacuum heat collection pipe 15 because of the 151 growth spallings of pipe in being somebody's turn to do by this bend 61c dilatating and deformable at longitudinally.And because the setting of this bend 61c,, working fluid during the position of this bend 61c, increases heat biography effect thereby can produce sinuous flow so flowing through.
In sum, the utility model can solve copper and the highly difficult technology of glass capsulation and the problem of expensive cost in the single radial cut vacuum heat collection pipe, reduces cost, and can not stop up because of two openings.Its parabolic reflector spotlight effect is big, again because of easy volume production reduces cost again, also can meet patent requirement in fact, so file an application in accordance with the law with the function of doing season suitably to adjust.
Claims (13)
1. two opening vacuum tube collectors of a solar energy parabolic reflector is characterized in that comprising:
One support;
One circulation line, working fluid is housed in it, this circulation line is made of several vacuum heat collection pipes and two tube connectors, this vacuum heat collection pipe is the two openings for both ends open, and it has inside and outside two pipes, plate one deck selective absorbing film in this inner tube outer surface, increasing Heat-collecting effect, and in this, vacuumize in the enclosure space of pipe and this outer tube and become vacuum state; Should in the pipe two ends near the suitable distance of sealing, be provided with one inwardly or to the bend of external arc projection; This vacuum heat collection pipe is connected with this tube connector is vertical, can avoid workflow to know from experience because of floating and can't circulate in the back of absorbing heat;
Several thermal-arrest assemblies that are covered with this circulation line, be to be fixed on this support, it has a casing, a parabolic reflector, and is covered on the transparent cover on this casing and is located on this thermal-arrest assembly and by these several vacuum heat collection pipes and two these circulation lines that tube connector connects to; And
One lowering or hoisting gear is to be connected under this support, can drive this vacuum tube collector with season difference do different illumination angles of inclination.
2. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1 is characterized in that the working fluid in this circulation line is a water, then can utilize and meet the natural way circulation that heat rises.
3. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1, it is characterized in that, working fluid in this circulation line is able to a drive unit and makes forced circulation, and this drive unit is controlled at the arrival design temperature with a differential temperature controller and just makes forced circulation one time.
4. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1 is characterized in that this working fluid can be water, air, heat kerosene, and the three all can be used for forced cyclic type.
5. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1 is characterized in that this working fluid is delivered to a heat-storing device after finishing heat exchange.
6. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1, it is characterized in that, the quantity of this vacuum heat collection pipe is the quantity corresponding to this parabolic reflector, and this vacuum heat collection pipe just is positioned on the optically focused collection point of this parabolic reflector, quantity serves as appropriate with three to five/sheet relatively.
7. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1 is characterized in that this heat collector is by described stent support, and the stream tail end that can make this vacuum heat collection pipe is a little more than its stream front end.
8. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1, it is characterized in that the material of this parabolic reflector adds with precast monolithic moulding material (BMC) that is subordinated to injection mo(u)lding thermosetting material or Merlon (PC) that propylene-BS (ABS) or BS add in the material of UV resistant agent and chooses a kind of making.
9. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1, it is characterized in that, this lowering or hoisting gear is a driving screw device, the adjustment nut that it has a driving screw and cooperates with it, this driving screw can connect a drive unit, makes this driving screw can adjust the angle of inclination of this heat collector with automatic, manual two modes.
10. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1, it is characterized in that, all have several short tubes on this tube connector, opening two ends of this vacuum heat collection pipe are connected with these short tubes on this two tube connector, and this vacuum heat collection pipe is connected between this two tube connector that is vertical configuration in horizontal mode, can avoid working fluid can't circulate because of the back come-up of absorbing heat.
11. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1, it is characterized in that, the diameter of section of this parabolic reflector is below 10: 1 with the inner tube diameter of this vacuum heat collection pipe ratio, and the position of this vacuum heat collection pipe must just place the light reflector focus place of this parabolic reflector, and wherein the surperficial evaporation of this parabolic reflector has layer of aluminum.
12. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 1, it is characterized in that, this circulation line is directly to be in series with these thermal-arrest assemblies and this tube connector, and this thermal-arrest assembly comprises that then several vacuum heat collection pipes and this tube connector are in series.
13. the two opening vacuum tube collectors of solar energy parabolic reflector as claimed in claim 12 is characterized in that the suit place of these aforementioned these tube connectors and these thermal-arrest assemblies or vacuum heat collection pipe is all tightened with anti-leak with one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95211721U CN2238999Y (en) | 1995-05-18 | 1995-05-18 | Anti-spalling double-open vacuum pipe heating collector with solar parabolic reflecting surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95211721U CN2238999Y (en) | 1995-05-18 | 1995-05-18 | Anti-spalling double-open vacuum pipe heating collector with solar parabolic reflecting surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2238999Y true CN2238999Y (en) | 1996-10-30 |
Family
ID=33862106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95211721U Expired - Lifetime CN2238999Y (en) | 1995-05-18 | 1995-05-18 | Anti-spalling double-open vacuum pipe heating collector with solar parabolic reflecting surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2238999Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949529A (en) * | 2010-09-27 | 2011-01-19 | 绍兴文理学院 | Disc-type solar power generation natural circulation receiver |
| CN112728782A (en) * | 2021-01-05 | 2021-04-30 | 深圳大学 | Split type heat collector |
-
1995
- 1995-05-18 CN CN95211721U patent/CN2238999Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949529A (en) * | 2010-09-27 | 2011-01-19 | 绍兴文理学院 | Disc-type solar power generation natural circulation receiver |
| CN112728782A (en) * | 2021-01-05 | 2021-04-30 | 深圳大学 | Split type heat collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |