CN204854044U - Solar energy flat plate collector's overheat protection device - Google Patents

Solar energy flat plate collector's overheat protection device Download PDF

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Publication number
CN204854044U
CN204854044U CN201520490024.XU CN201520490024U CN204854044U CN 204854044 U CN204854044 U CN 204854044U CN 201520490024 U CN201520490024 U CN 201520490024U CN 204854044 U CN204854044 U CN 204854044U
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China
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spring
temperature
plate
collector
solar collector
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CN201520490024.XU
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Chinese (zh)
Inventor
徐刚
李育坚
史继富
熊斌
孙耀明
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SICHUAN ZHONGKE BAIBO SOLAR ENERGY TECHNOLOGY Co Ltd
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SICHUAN ZHONGKE BAIBO SOLAR ENERGY TECHNOLOGY Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

Abstract

The utility model provides a solar energy flat plate collector's overheat protection device, casing in arranging solar energy flat plate collector in, a wall of this casing is fixed mutually with solar energy flat plate collector's border panel inner wall to set up the external outer vent of intercommunication on this wall, another wall of casing is equipped with interior air vent, is equipped with the closing plate controlled of making a concerted effort by design spring and temperature memory spring on the casing wall at interior air vent place, the effort of design spring makes the closing plate open interior air vent, effort when temperature memory spring reaches the deformation temperature make the closing plate seal in the air vent, and the effort of temperature memory spring when reaching the deformation temperature is better than the design spring. The gas tightness is good under its low temperature, and the flat plate collector leakproofness of breathing the mouth than ordinary area is good efficient, and high temperature has the cooling guard action again down, can guarantee flat plate collector's the thermal efficiency for a long time, lengthens flat plate collector's life again greatly.

Description

A kind of overtemperature protection system of plate solar collector
Technical field
The utility model relates to plate solar collector, particularly relates to a kind of overtemperature protection system of plate solar collector.
Background technology
In solar energy heat utilization, solar thermal collector is a core component, mainly contains vacuum tube collector and flat plate collector.Because plate solar collector has load performance, result of use is good, is more and more subject to consumer acceptance.But plate solar collector is in running, particularly summer, user's frequency of utilization was low, plate solar collector is made often to run into high-temperature condition, sometimes heat collector internal temperature reaches 200 DEG C, the performance of the coating for selective absorption at this temperature on heat-absorbing plate core can decay than very fast, the caulking gum part of heat collector and insulation material are easily aging, and copper pipe and the cold meeting of absorber plate heat expansion simultaneously causes soldering opening to destroy, and these have all had a strong impact on performance and the life-span of plate solar collector.
Existing multiple patent about solving heat collector air drying high temperature problem at present, below list several existing Patents:
Patent document " a kind of panel solar sun-proof device " (application number: 201420684596.7), propose one and utilize sun-shielding rolling screen and turning gear, utilize driven by motor sun-shielding rolling screen to implement to hide sun-proof to flat board, thus realize the sun-proof cooling of heat collector.
Patent document " anti-air drying flat-plate solar collector " (application number: 201210433992.8), a kind of automatic shading heat-insulation transparent sealing plate is proposed, sealing plate surface recombination one deck temperature-sensitive phase transformation light control material or liquid crystal light modulation film, under high temperature, temperature-sensitive phase transformation light control material undergoes phase transition and becomes opaque with the effect realizing automatic shading, thus realizes the sun-proof cooling of heat collector.
Patent document " a kind of solar water heating system that can carry out high temperature protection to heat collector " (application number: 201210151475.1); a kind of heat-exchange system is proposed; system is mainly taken out of the heat in water tank by the heat exchange U-shaped pipe installed in water tank; water in water tank after cooling can reduce flat heat collecting actuator temperature, thus realizes heat collector cooling.
But the scheme that above-mentioned patent document is recorded still exists flaw, and not operatively solve the problem that plate solar collector air drying causes temperature too high.
Summary of the invention
The purpose of this utility model is the overtemperature protection system proposing a kind of plate solar collector; can to plate solar collector automatic temperature reduction function protection when air drying, to solve the hydraulic performance decline that plate solar collector air drying high temperature causes and the problem shortened service life.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of overtemperature protection system of plate solar collector, comprise the housing be placed in plate solar collector, a wall of this housing and the lateral frame board inwall of plate solar collector fix, and on this wall, offer the outer vent being communicated with the external world, another wall of described housing is provided with interior passage, the shell wall side at interior passage place is provided with the controlled sealing plate of making a concerted effort by shaped spring and temperature memory spring, the active force of described shaped spring impels sealing plate to open interior passage, active force when described temperature memory spring reaches deformation temperature impel sealing plate close in passage, and the active force of temperature memory spring when reaching deformation temperature is better than shaped spring.
Described temperature memory spring and shaped spring are Compress Spring, the shell wall side at described interior passage place is provided with groove, one end of described temperature memory spring is placed in this groove, the other end is against on a plate face of described sealing plate, one end of described shaped spring is against on another plate face of described sealing plate, and the other end is bearing on a wall of described housing.
Described shaped spring is Compress Spring, one end of this shaped spring is bearing on a wall of described housing, the other end is against on a plate face of described sealing plate, described temperature memory spring is extension spring, one end of this temperature memory spring is fixed on the same plate face of described sealing plate, and the other end is fixed on the same wall of described housing.
Described temperature memory spring is the spring be made up of the temperature-responsive material of deformation temperature between 40-200 DEG C.
On the top deckle board that the overtemperature protection system of described plate solar collector is separately positioned on plate solar collector and following deckle board.
The utility model has the advantages that: simple and reasonable for structure, mounting means is flexible, utilize the interior passage, the outer vent that are opened on housing two walls, and mobilizable sealing plate, when plate solar collector is in normal working temperature, by two springs make a concerted effort impel sealing plate to be placed in close in the position of passage, make the air inside plate solar collector not by interior passage, thus ensure the sealing of flat plate collector well, thermal performance of collectors can not be declined because of poorly sealed and collecting efficiency; And when the temperature of plate solar collector is too high, the hardening generation elastic force of temperature memory spring, and elasticity rate shaped spring wants large, the making a concerted effort of two springs impel sealing plate to be placed in open the position of interior passage, thus inside and outside passage is communicated with, the hot-air inside solar thermal collector is discharged to the heat collector external world because buoyancy rises, and when hot-air is drained, cool ambient air can enter in flat plate collector smoothly, and heat collector is cooled.Under its low temperature, air-tightness is good, higher than the flat plate collector good airproof performance efficiency of common band pneumostome, has again cooling protection effect, can ensure the thermal efficiency of flat plate collector for a long time, greatly extend again the service life of flat plate collector under high temperature.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the utility model is arranged in flat heat collecting;
Structural representation when Fig. 2 is the utility model normal temperature;
Fig. 3 is the structural representation of the section A-A of Fig. 2;
Fig. 4 is the structural representation of the section B-B of Fig. 2;
Structural representation when Fig. 5 is the utility model high temperature;
Fig. 6 is the structural representation of the cross section C-C of Fig. 5;
Fig. 7 is the structural representation that in the utility model, two springs are positioned at sealing plate homonymy;
Description of reference numerals: 1, housing; 2, shaped spring; 3, temperature memory spring; 4, sealing plate; 5, outer vent; 6, interior passage.
Detailed description of the invention
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in further detail the utility model below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figures 1 to 7, a kind of overtemperature protection system of plate solar collector, comprise the housing 1 be placed in plate solar collector, a wall of this housing 1 and the lateral frame board inwall of plate solar collector fix, and on this wall, offer the outer vent 5 being communicated with the external world, another wall of described housing 1 is provided with interior passage 6, housing 1 wall at interior passage 6 place is provided with by the sealing plate 4 of making a concerted effort controlled of shaped spring 2 with temperature memory spring 3, the active force of described shaped spring 2 impels sealing plate 4 to open interior passage 6, active force when described temperature memory spring 3 reaches deformation temperature impel sealing plate 4 close in passage 6, and the active force of temperature memory spring 3 when reaching deformation temperature is better than shaped spring 2.
Namely above-mentioned overtemperature protection system is primarily of compositions such as housing 1, shaped spring 2, temperature memory spring 3, sealing plates 4, and a wall of housing 1 is provided with outer vent 5, and another wall is provided with and interior passage 6.Wherein, temperature memory spring 3 is made with a kind of memorial alloy, designs the spring that deformation temperature is (preferably 70 DEG C) between 40-200 DEG C; And shaped spring 2 refers to stiffness factor not with the spring that temperature changes, in the utility model, the elastic force of the shaped spring 2 selected between temperature memory spring 3 deformation at high operating temperatures, hardening time elastic force and low temperature under be in the elastic force of soft state.
During embody rule, described temperature memory spring 3 and shaped spring 2 can in sealing plate 4 both sides, as accompanying drawing 1-6, also can at sealing plate 4 homonymy, and as accompanying drawing 7.
Two spring fittings are when the two opposite sides of sealing plate 4, temperature memory spring 3 and shaped spring 2 are Compress Spring, housing 1 wall at interior passage 6 place is provided with groove, one end of temperature memory spring 3 is placed in this groove, the other end is against on a plate face of described sealing plate 4, one end of shaped spring 2 is against on another plate face of described sealing plate 4, and the other end is bearing on a wall of housing 1.
Two spring fittings are when the two opposite sides of sealing plate 4, housing 1 wall at interior passage 6 place is provided with groove, shaped spring 2 is extension spring, one end of this shaped spring 2 is placed in groove, the other end is fixed on a plate face of sealing plate 4, temperature memory spring 3 is Compress Spring, and one end of this temperature memory spring 3 is placed in same groove, and the other end is against on the same wall of sealing plate 4.
The shape of interior passage 6, outer vent 5 and sealing plate 4 can be circular, square, triangle, ellipse and irregular annular etc., and temperature memory spring 3, shaped spring 2 can arrange one or more groups, and this is not restricted.
In order to better heat exchange; at the top deckle board of plate solar collector and the inwall of following deckle board, an overtemperature protection system of the present utility model is set respectively; namely be installed on the inner side of the lateral frame board of the manufacture of aluminium section bar up and down of flat plate collector in accompanying drawing 1 mode and fix; make a call to a some holes at upper and lower aluminium section bar simultaneously; communicate with the outer vent 5 of this overtemperature protection system, outer vent 5 is communicated with the external world.As accompanying drawing 2-6, when plate solar collector normally runs, the temperature of temperature memory spring 3 is below deformation temperature, be in soft state, can not produce thrust, sealing plate 4 is finalized spring 2 and pushes down, interior passage 6 is blocked, air inside flat plate collector by interior passage 6, does not thus ensure the sealing of flat plate collector well, and thermal performance of collectors can not be declined because of poorly sealed and collecting efficiency, when plate solar collector is in air drying, the inside air themperature is very high, the deformation temperature of temperature memory spring 3 is reached more than 70 DEG C, the hardening state of this temperature memory spring 3 and extend, produce thrust, and the power of thrust ratio shaped spring 2 wants large, sealing plate 4 will be promoted, open interior passage 6, interior passage 6 is communicated with outer vent 5, hot-air inside heat collector is discharged to the heat collector external world because buoyancy rises, and hot-air is when draining, the negative pressure that inside heat collector, generation one is small, cool ambient air successfully may enter flat plate collector from the overtemperature protection system below heat collector, so realize extraneous air overtemperature protection system from below and enter heat collector again from the overtemperature protection system of top out, the heat of the inside is taken away when extraneous cold air passes in and out heat collector, thus make heat collector cool well.
When shaped spring 2 and temperature memory spring 3 being arranged on sealing plate 4 homonymy in the mode shown in Fig. 7, its operation principle is the same, when plate solar collector is in normal temperature equally, promote sealing plate 4 by shaped spring 2 and cover interior passage 6, when plate solar collector temperature is too high, temperature memory spring 3 is hardening, produces elastic force and sealing plate 4 is open, open interior passage 6, and then radiating and cooling.
We have done following contrast test.The basic the same flat plate collector of two cover process materials.First set has installed overtemperature protection system of the present utility model additional, does not fill pneumostome, and the second cover does not add overtemperature protection system of the present utility model, is with four pneumostomes.Coating solar-energy absorptance (AM1.5) is: 0.95, and normal direction transmitting ratio is: 0.04.It is 78.3% that the new product just made surveys first set momentary efficiency, and heat waste is 4.2W/m 2k; Second cover momentary efficiency is 73.2%, and heat waste is 5W/m 2k.Visible, the efficiency of first set system is higher than the second cover, and heat loss also reduces, this is because, first set system, in the temperature range of test, is substantially airtight, there is not cross-ventilation, and the second cover adopts the mode of pneumostome, convection current is remarkable, and therefore heat loss is serious, and thermal effect reduces.Through air drying after 1 year, then testing efficiency.First set momentary efficiency is 78.0%, and heat waste is 4.3W/m 2k; Second cover momentary efficiency is 65.3%, and heat waste is 5.5W/m 2k.This is because through the use of a year, the second cover system cross-ventilation caused plate core seriously corroded, therefore thermal effect declines.Through contrast test, the efficiency and the heat loss that have filled overtemperature protection system of the present utility model are all good than what do not fill, main cause be the second cuff pneumostome air-tightness than the difference of first set, heat loss is increased.Further, after 1 year air drying, first set coating solar-energy absorptance (AM1.5) is: 0.94, and normal direction transmitting ratio is: 0.05, and the second cover coating solar-energy absorptance (AM1.5) is: 0.90, and normal direction transmitting ratio is: 0.09.Visible, first set momentary efficiency is substantially constant, and the second cover momentary efficiency declines 8%, and first set heat waste remains unchanged, and the second cover heat waste adds 0.5W/m 2k.On inspection, find that the second cover coating performance declines more, between part copper comb and heat absorption aluminium flake, solder joint comes off, and the distortion of copper bar pipe, and plate core and glass capsulation plate 4 are apart from increase.To sum up; first set system is obviously better than the second cover; plate solar collector overtemperature protection system of the present utility model at low temperatures air-tightness is good; higher than the flat plate collector good airproof performance efficiency of common band pneumostome; under high temperature, there is again cooling protection effect; the thermal efficiency of flat plate collector can be ensured for a long time, greatly extend again the service life of flat plate collector.
Above-listed detailed description is illustrating for the utility model possible embodiments, and this embodiment is also not used to limit the scope of the claims of the present utility model, does not allly depart from the equivalence that the utility model does and implements or change, and all should be contained in the scope of the claims of this case.

Claims (5)

1. the overtemperature protection system of a plate solar collector, it is characterized in that: comprise the housing be placed in plate solar collector, a wall of this housing and the lateral frame board inwall of plate solar collector fix, and on this wall, offer the outer vent being communicated with the external world, another wall of described housing is provided with interior passage, the shell wall side at interior passage place is provided with the controlled sealing plate of making a concerted effort by shaped spring and temperature memory spring, the active force of described shaped spring impels sealing plate to open interior passage, active force when described temperature memory spring reaches deformation temperature impel sealing plate close in passage, and the active force of temperature memory spring when reaching deformation temperature is better than shaped spring.
2. the overtemperature protection system of plate solar collector according to claim 1; it is characterized in that: described temperature memory spring and shaped spring are Compress Spring; the shell wall side at described interior passage place is provided with groove; one end of described temperature memory spring is placed in this groove; the other end is against on a plate face of described sealing plate; one end of described shaped spring is against on another plate face of described sealing plate, and the other end is bearing on a wall of described housing.
3. the overtemperature protection system of plate solar collector according to claim 1; it is characterized in that: the shell wall side at described interior passage place is provided with groove; described shaped spring is extension spring; one end of this shaped spring is placed in groove; the other end is fixed on a plate face of described sealing plate; described temperature memory spring is Compress Spring, and one end of this temperature memory spring is placed in same groove, and the other end is against on the same wall of described sealing plate.
4. the overtemperature protection system of the plate solar collector according to claim 1-3 any one, is characterized in that: described temperature memory spring is the spring be made up of the temperature-responsive material of deformation temperature between 40-200 DEG C.
5. the overtemperature protection system of plate solar collector according to claim 4, is characterized in that: on the top deckle board that this overtemperature protection system is separately positioned on plate solar collector and following deckle board.
CN201520490024.XU 2015-07-09 2015-07-09 Solar energy flat plate collector's overheat protection device Active CN204854044U (en)

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CN201520490024.XU CN204854044U (en) 2015-07-09 2015-07-09 Solar energy flat plate collector's overheat protection device

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108511670A (en) * 2017-02-27 2018-09-07 比亚迪股份有限公司 A kind of cell electrode assemblies, cover plate assembly and battery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108511670A (en) * 2017-02-27 2018-09-07 比亚迪股份有限公司 A kind of cell electrode assemblies, cover plate assembly and battery
CN108511670B (en) * 2017-02-27 2020-03-31 比亚迪股份有限公司 Battery electrode component, cover plate component and battery

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