CN202853147U - Solar heat collection device with rotary heat collection pipe - Google Patents

Solar heat collection device with rotary heat collection pipe Download PDF

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Publication number
CN202853147U
CN202853147U CN2012205190051U CN201220519005U CN202853147U CN 202853147 U CN202853147 U CN 202853147U CN 2012205190051 U CN2012205190051 U CN 2012205190051U CN 201220519005 U CN201220519005 U CN 201220519005U CN 202853147 U CN202853147 U CN 202853147U
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CN
China
Prior art keywords
thermal
collecting tube
solar energy
heat collector
heat collection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2012205190051U
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Chinese (zh)
Inventor
约翰·文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WEIHAI GOLDEN SUN SOLAR THERMAL POWER GENERATION EQUIPMENT Co Ltd
Original Assignee
WEIHAI GOLDEN SUN SOLAR THERMAL POWER GENERATION EQUIPMENT Co Ltd
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Application filed by WEIHAI GOLDEN SUN SOLAR THERMAL POWER GENERATION EQUIPMENT Co Ltd filed Critical WEIHAI GOLDEN SUN SOLAR THERMAL POWER GENERATION EQUIPMENT Co Ltd
Priority to CN2012205190051U priority Critical patent/CN202853147U/en
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Publication of CN202853147U publication Critical patent/CN202853147U/en
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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
    • F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • F24S30/425—Horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10—Special components
    • F24S2030/15—Bearings
    • 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
    • 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
    • Y02E10/47—Mountings or tracking

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The utility model provides a solar heat collection device with a rotary heat collection pipe. The solar heat collection device comprises a reflector and the heat collection pipe, wherein the heat collection pipe is arranged on a focal line or an aligning focal line of the reflector, or arranged close to the focal line or the aligning focal line of the reflector. The solar heat collection device further comprises a device enabling the heat collection pipe to rotate. Through rotating of the heat collection pipe, the heat collection pipe is heated uniformly, a hot spot and partial freezing can be avoided, bending deforming and cracking caused by nonuniform heating of the heat collection pipe can be avoided, heat conduction efficiency of the solar heat collection device is improved effectively and service life of the solar heat collection device is prolonged effectively.

Description

The rotating solar energy heat collector of thermal-collecting tube
Technical field
The utility model belongs to the solar energy heat collection equipment technical field, is specifically related to a kind of solar energy heat collector with rotatable thermal-collecting tube.
Background technology
Linear solar concentrator is a kind of device with solar energy collecting to a focal line or accurate focal line.Wherein a kind of form is to comprise the Linear Parabolic face concentrator that is made of several retroreflective regions, and these retroreflective regions are fixed on the steel construction of accurate sun-tracing.Place endothermic tube at focal line, be used for catching solar radiation.By at endothermic tube external concentric mounting glass pipe, and between glass tube and endothermic tube, vacuumize, consist of thermal-collecting tube, can raise the efficiency.
The sealing of vacuum area realizes that by expansion gear is installed make expansion gear one end connect glass tube with several stainless steel rings, the other end connects stainless steel tube between glass tube and stainless steel endothermic tube.Expansion gear can compensate the difference that the line between stainless steel tube and the glass tube expands.For improving the efficient of thermal-collecting tube, endothermic tube plating sunshine selective absorption film adopts borosilicate glass tube and coated with antireflection coatings.Such thermal-collecting tube is widely available on the market.
In order to shift the heat in the thermal-collecting tube, use a kind of heat-conducting fluid, by pump it is circulated in thermal-collecting tube.
A loop of groove type heat collector comprises two row's parabola groove type heat collectors, about 300 meters long of every row, and couple together at two ends.On its focal line, be placed with about 80 thermal-collecting tubes of row.Be secured together by the MIG weldering between the Neighbor Set heat pipe, form a very long passage, heat-conducting fluid flows through from the inside.
The heat-conducting fluid that uses at present has water, mineral oil or a kind of fused salt.The mixture of some fused salt and steam can be used for improving the operating temperature of solar generator, can improve the efficiency of cycle with regard to this point.The shortcoming of this fused salt is that they just solidify in 70-250 ℃ temperature range.The salt corrosion that fusing point is lower is stronger, and cost is higher, and stability is also lower.
One large problem of modern groove type heat collector is that radiation flux distribution is uneven.Endothermic tube is towards a radiation flux height of reflector, and reverse side is then low.Such radiation profiles causes the temperature distributing disproportionation in endothermic tube cross section even, and thermal-collecting tube is occured bending and deformation.When the endothermic tube of heat touches cold glass tube, glass can break because of thermal shock.For reducing this problem, send into more heat-conducting fluid by pump in the system and circulate to improve cooldown rate.
Yet in the system that uses fused salt and steam mixture, a large problem is, the stratified flow pattern can appear in morning or night, and the side that the endothermic tube receiver radiation is few is good through water cooling, and receiver radiation many places in endothermic tube top are cooled off bad through steam.This problem can cause extremely flexural deformation, and then causes thermal-collecting tube to break.
Similarly problem also can occur in the situation that the fused salt that solidifies in the thermal-collecting tube need to be melted.At the non-constant of melting stage cooling situation, in the endothermic tube bottom, owing to the thermal conductivity of solidifying fused salt is low, this situation will further be aggravated, and form the fused salt of the very thin extreme temperatures of one deck, and endothermic tube top will be freezed.
The utility model content
The purpose of this utility model is to provide a kind of solar energy heat collector, solves the even problem of temperature distributing disproportionation in the thermal-collecting tube by rotating thermal-collecting tube.
For achieving the above object, the utility model adopts following technical scheme:
A kind of solar energy heat collector comprises reflector and thermal-collecting tube, and described thermal-collecting tube places on the focal line or accurate focal line of reflector, perhaps places near the focal line or accurate focal line of reflector, it is characterized in that, also comprises the device that described thermal-collecting tube is rotated.
Further, the device that described thermal-collecting tube is rotated comprises: be arranged at the active connection thermal-collecting tube two ends, that cooperate thermal-collecting tube to rotate, the driven pulley that is fixedly connected with thermal-collecting tube drives the driving wheel that this driven pulley rotates, and the drive unit that this driving wheel is rotated.The kind of drive between described driving wheel and the described driven pulley is a kind of in following: chain drive, gear drive, belt transmission.Described drive unit is a kind of in following: drive motors, fluid pressure drive device, cylinder driver.Described active connection is preferably ball-and-socket joint.
Further, described thermal-collecting tube comprises endothermic tube and is installed in the glass tube of this endothermic tube outside by expansion gear
Further, be provided with inserts in the described thermal-collecting tube.This inserts arranges along the thermal-collecting tube length direction at collector tube inner wall, and is elongated or by the long row that a plurality of billet shapes form, can play the effect that helps the heat-conducting fluid mixing.This inserts can be designed to cavernous, conductive fluid is guided into the place of cooling off in the thermal-collecting tube as capillary.Such inserts can also be used for partly removing liquid film from the fused salt that freezes.
Further, described thermal-collecting tube is provided with roller devices, and this roller devices comprises some with the roller tangent contact of thermal-collecting tube, that rotate with thermal-collecting tube.
Further, described thermal-collecting tube can change rotation direction, after rotating certain hour to clockwise direction/counter clockwise direction, can alter course counterclockwise/rotate clockwise, to play the effect of raising pyroconductivity.
Solar energy heat collector of the present utility model can comprise one or more sets reflectors, can comprise row or a multiple row thermal-collecting tube, is fixedly connected with by forms such as welding between each thermal-collecting tube in the same column.
Solar energy heat collector of the present utility model, by being rotated, thermal-collecting tube makes its thermally equivalent, can avoid producing focus and partial freezing, avoid the flexural deformation that thermal-collecting tube causes because of the inequality of being heated and break, effectively improve heat conduction efficiency and the service life of solar energy heat collector, had important Practical significance.
Description of drawings
Fig. 1 is the schematic diagram of solar energy heat collector among the embodiment.
Fig. 2 is the motor-driven device schematic diagram that thermal-collecting tube is rotated among the embodiment.
Fig. 3 drives the schematic diagram that reflector rotates and the driven by motor chain rotates thermal-collecting tube by hydraulic means among the embodiment.
Fig. 4 is the roller devices schematic diagram that is installed among the embodiment on the thermal-collecting tube.
Fig. 5 (a)-(c) is the inserts shape schematic diagram that is positioned at thermal-collecting tube among the embodiment.
Fig. 6 is the radiation profiles schematic diagram of thermal-collecting tube among the embodiment.
Among the figure: 1-ball-and-socket joint; 2-device (part) that thermal-collecting tube is rotated; 3-motor; 4-drive sprocket; 5-thermal-collecting tube; 6-driven sprocket; 7-roller; 8-fluid pressure drive device; 9-center of rotation; 10-reflector; 11-radiation profiles; 12-support member.
The specific embodiment
Below in conjunction with accompanying drawing, by specific embodiment the utility model is described further.
Shown in Figure 1 is the schematic diagram of the solar energy heat collector of an embodiment of the utility model, comprise cover reflector 10 and an alignment thermal-collecting tube 5, active connection---the ball-and-socket joint 1 that cooperates thermal-collecting tube to rotate is installed at the two ends of this row thermal-collecting tube, this ball-and-socket joint can be buied from for example HYSPAN sophisticated product company, installs in the centre position of thermal-collecting tube (can be the junction between thermal-collecting tube) to drive the device 2 that thermal-collecting tube rotates.
In the device that the driving thermal-collecting tube of present embodiment rotates, the kind of drive adopts chain, as shown in Figure 2, drive motors 3 drives drive sprocket 4 and rotates, drive sprocket 4 rotates by chain-driving driven sprocket 6, and driven sprocket 6 is fixedly connected on the thermal-collecting tube, and power is passed to thermal-collecting tube 5, make it around the rotation of along its length central shaft, make the thermal-collecting tube thermally equivalent.In the present embodiment, as shown in Figure 3, reflector 10 drives by fluid pressure drive device 8 and rotates around center of rotation 9, and whole like this solar energy heat collector can sun-tracing, makes fully sunlight reflection of reflector 10.
Except chain drive, in other embodiments, the utility model also can adopt the forms such as gear, belt to make driving wheel drive driven pulley and rotate.Except motor-driven, in other embodiments, the utility model also can adopt the mode of hydraulic-driven or air cylinder driven that driving wheel is rotated.
For thermal-collecting tube being supported and locating, the utility model is provided with roller devices at thermal-collecting tube, and as shown in Figure 4, this roller devices comprises some (such as 3) roller 7, roller 7 can adopt ball bearing to realize.The partial enlarged drawing of Fig. 4 (thermal-collecting tube cross-wise direction view) has shown the concrete structure of this roller devices.This roller devices is fixedly connected with a support member 12, and thermal-collecting tube is connected with this roller devices, and the roller 7 in the roller devices contacts with thermal-collecting tube is tangent, and along with thermal-collecting tube rotates and rotates, plays the effect of support and location set heat pipe.
For strengthening the heat conduction, can in thermal-collecting tube, add inserts, its structure and position are shown in Fig. 5 (a)-(c).This figure is the schematic diagram of thermal-collecting tube lateral cross section, and as shown in FIG., inserts is arranged on collector tube inner wall, arrange along thermal-collecting tube length direction elongated (on the whole length direction of thermal-collecting tube), but the utility model is not limited to illustrated 3 kinds of structures and position.This inserts is installed along the thermal-collecting tube length direction, and is elongated or by the long row that a lot of billet shapes form, between each billet shape the interval arranged, to play the effect that helps the heat-conducting fluid mixing.This inserts can also be porous, conductive fluid can be guided into the place of cooling off in the thermal-collecting tube as capillary.The inserts inserts is set in thermal-collecting tube can also be used for partly removing liquid film from the fused salt that freezes, the thermal-collecting tube that inserts namely is housed makes liquid fused salt move to heat collection tube by rotation, and its principle is similar to Archimedes's screw rod.
Fig. 6 has illustrated the radiation profiles 11 of thermal-collecting tube in the prior art, and the temperature distributing disproportionation in thermal-collecting tube 5 cross sections is even, is higher than the dorsad temperature T 1 of reflective mirror 10 one sides towards the temperature T 2 of reflective mirror 10 one sides.Adopt the utility model, by rotating thermal-collecting tube 5, the even problem of temperature distributing disproportionation is alleviated.
Above embodiment is only in order to the technical solution of the utility model to be described but not limit it; those of ordinary skill in the art can make amendment or is equal to replacement the technical solution of the utility model; and not breaking away from spirit and scope of the present utility model, protection domain of the present utility model should be as the criterion so that claim is described.

Claims (10)

1. a solar energy heat collector comprises reflector and thermal-collecting tube, and wherein thermal-collecting tube places on the focal line or accurate focal line of reflector, perhaps places near the focal line or accurate focal line of reflector, it is characterized in that, also comprises the device that described thermal-collecting tube is rotated.
2. solar energy heat collector as claimed in claim 1, it is characterized in that, the device that described thermal-collecting tube is rotated comprises: the active connection of being located at the thermal-collecting tube two ends, the driven pulley that is fixedly connected with thermal-collecting tube, drive the driving wheel that this driven pulley rotates, and the drive unit that this driving wheel is rotated.
3. solar energy heat collector as claimed in claim 1 or 2, it is characterized in that: described thermal-collecting tube is provided with roller devices, this roller devices is fixedly connected with a support member, and this roller devices comprises some with the roller tangent contact of thermal-collecting tube, that rotate with thermal-collecting tube.
4. solar energy heat collector as claimed in claim 1 or 2 is characterized in that: be provided with inserts in the described thermal-collecting tube.
5. solar energy heat collector as claimed in claim 4, it is characterized in that: described inserts is cellular.
6. solar energy heat collector as claimed in claim 1 or 2 is characterized in that: after described thermal-collecting tube rotates certain hour to clockwise direction/counter clockwise direction, alter course counterclockwise/clockwise rotation.
7. solar energy heat collector as claimed in claim 1 or 2 is characterized in that: described thermal-collecting tube comprises endothermic tube and is installed in the glass tube of this endothermic tube outside by expansion gear.
8. solar energy heat collector as claimed in claim 2, it is characterized in that: described active connection is ball-and-socket joint.
9. solar energy heat collector as claimed in claim 2 is characterized in that, the kind of drive between described driving wheel and the described driven pulley is a kind of in following: chain drive, gear drive, belt transmission.
10. solar energy heat collector as claimed in claim 2 is characterized in that, described drive unit is a kind of in following: drive motors, fluid pressure drive device, cylinder driver.
CN2012205190051U 2011-10-10 2012-10-10 Solar heat collection device with rotary heat collection pipe Expired - Lifetime CN202853147U (en)

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CN201110305129 2011-10-10
CN201110305129.X 2011-10-10
CN2012205190051U CN202853147U (en) 2011-10-10 2012-10-10 Solar heat collection device with rotary heat collection pipe

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CN2012205190051U Expired - Lifetime CN202853147U (en) 2011-10-10 2012-10-10 Solar heat collection device with rotary heat collection pipe

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102927693A (en) * 2011-10-10 2013-02-13 康雪慧 Solar heating device with rotatable heat collecting tube
CN108413619A (en) * 2018-04-24 2018-08-17 四川大学 A kind of rotatable trough type solar heat-collector of vacuum heat absorbing pipe

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CN107062645A (en) * 2017-01-12 2017-08-18 东北电力大学 Wind drives rotary type waveform thermal-collecting tube trough type solar heat-collector
CN107631495A (en) * 2017-09-20 2018-01-26 海宁铿宇贸易有限公司 A kind of focusing solar water heater
CN107655223A (en) * 2017-09-20 2018-02-02 海宁铿宇贸易有限公司 Focusing solar water heater
CN112197443A (en) * 2020-10-14 2021-01-08 镇江市鑫汉太阳能电力有限公司 Graphene-coated efficient heat collecting tube applied to solar photo-thermal power generation

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CN2387473Y (en) * 1999-08-16 2000-07-12 孙迎光 Focusing tracking type high effective solar water heater
CN2407289Y (en) * 1999-12-29 2000-11-22 扬州市华扬太阳能热水器有限公司 Through vacuum heat collecting pipe
KR100420839B1 (en) * 2001-07-25 2004-03-02 박종근 Apparatus for keeping track of sun
US6886339B2 (en) * 2003-05-19 2005-05-03 The Boeing Company Trough-stirling concentrated solar power system
CN201047684Y (en) * 2006-06-19 2008-04-16 陈红专 Automatic following sun device
CN201306873Y (en) * 2008-10-27 2009-09-09 北京华业阳光新能源有限公司 Convergence type solar collector
CN101953625A (en) * 2009-07-13 2011-01-26 时扬 Solar-powered heat collecting pipe boiler
CN101893897B (en) * 2010-06-24 2012-10-10 云南师范大学 Sunlight reflecting spotlight sun-fixing positioning tracking drive device
CN102927693B (en) * 2011-10-10 2015-06-03 威海金太阳光热发电设备有限公司 Solar heating device with rotatable heat collecting tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102927693A (en) * 2011-10-10 2013-02-13 康雪慧 Solar heating device with rotatable heat collecting tube
CN102927693B (en) * 2011-10-10 2015-06-03 威海金太阳光热发电设备有限公司 Solar heating device with rotatable heat collecting tube
CN108413619A (en) * 2018-04-24 2018-08-17 四川大学 A kind of rotatable trough type solar heat-collector of vacuum heat absorbing pipe

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CN102927693B (en) 2015-06-03

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