CN202902664U - Novel all-glass heat-tube-type solar vacuum heat-collecting tube - Google Patents
Novel all-glass heat-tube-type solar vacuum heat-collecting tube Download PDFInfo
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- CN202902664U CN202902664U CN 201220389510 CN201220389510U CN202902664U CN 202902664 U CN202902664 U CN 202902664U CN 201220389510 CN201220389510 CN 201220389510 CN 201220389510 U CN201220389510 U CN 201220389510U CN 202902664 U CN202902664 U CN 202902664U
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- glass
- tube
- heat
- inner tube
- glass inner
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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 discloses a novel all-glass heat-tube-type solar vacuum heat-collecting tube which comprises a glass outer tube and a glass inner tube. A vacuum interlayer is placed between the glass outer tube and the glass inner tube. One end of the glass inner tube is of a sealed dome shape and is supported and fixed through a supporting clamping piece; a sun selective absorption film layer is deposited on the outer wall of the glass inner tube; the inner cavity of the glass inner tube is airtight space; a heat transfer working medium is poured inside the airtight space; the glass inner tube is 1-4cm longer than the glass outer tube. The novel all-glass heat-tube-type solar vacuum heat-collecting tube has the advantages of being safe, reliable, convenient to manufacture, low in cost, rational in content of the heat transfer working medium and capable of ensuring that a water heater is short in heat exchange start time, fast in warming, high in heat efficiency and the like.
Description
Technical field
The utility model relates to a kind of Novel all-glass heat pipe solar vacuum heat-collecting pipe, belongs to the solar energy optical-thermal applied technical field.
Background technology
Existing all-glass vacuum thermal-collecting tube is comprised of glass inner tube, the solar selectively absorbing coating that is attached to interior tube-surface, vacuum interlayer, cover glass tube, glass inner tube supporting member, getter, one end is the free end of sealing, the other end is openend, the openend inner and outer pipes seals, insert in the water tank, water can flow in the inner tube of thermal-collecting tube.Coating changes solar radiation into heat energy, and the cold water in the glass inner tube in heated water and the water tank forms convection circulation, comes the water in the heating water tank.There is following shortcoming in this thermal-collecting tube: the water yield in (1) thermal-collecting tube causes greatly intensification slower, and heat exchange is longer start-up time.(2) user can only use the hot water in the water tank, and the hot water in the thermal-collecting tube can only remain in the thermal-collecting tube and can not be used by the user, causes waste.(3) this thermal-collecting tube easily produces incrustation scale on the inwall of glass tube in long-term the use, the thermal efficiency is reduced, and may cause the situations such as bombing and bursting by freezing.
The medium phase-change heat transfer operation principle of all-glass heat pipe vacuum solar energy heat collection pipe: heat pipe is referred to as evaporator section in the part at high temperature place.At evaporator section, absorber heat absorption and the heat transferred heat-transfer working medium, heat-transfer working medium absorbs the heat start vaporizer, gas after the evaporation flows to the other end of heat pipe simultaneously, when the lower other end of gas arrival temperature is condensation end, just begin condensation, this moment, heat was just passed to condensation end by phase transformation, came the water in the heating water tank.At condensation end, the gas of evaporation has condensed into again liquid, and these condensed liquid have flowed back to again evaporation section because of Action of Gravity Field, and so Fluid Circulation does not stop, heat has just passed to the low temperature place by the high temperature place, and this is the operation principle of all-glass heat pipe solar vacuum heat-collecting pipe.
In application number is 99221421.1 patent application, proposed direct the sealing-in of glass outer tube ring-type on inner pipe, an inner tube part longer than outer tube is condensation segment, in this method, larger the direct ring-type sealing-in of glass outer tube production difficulty on glass inner tube, need professional equipment just can finish, cost is higher.In application number is 200520132861.1 patent application, proposed in full glass heat collection tube inner tube, directly to insert a heat pipe, although this technology is simple to operate, but had more a glass tube, cost is increased, and between heat pipe and absorber, every a layer of air, be unfavorable for conducting heat.In application number is 200520002321.1 patent application, external one section condensation segment on the vacuum heat collection pipe openend has been proposed, but this way so that sealing by fusing place material thicken, sealing-in place comprises inner and outer pipes and the condensation segment three-decker combines, stress is difficult to eliminate, and easily causes pipe explosion in the use procedure.
And in the interpolation of heat-transfer working medium, in the technology that has, it is excessive that the thermal-collecting tube transfer working medium in heat accounts for the volume ratio of tight Container Volume of Methane, caused like this confined space internal pressure excessive, easily cause the thermal-collecting tube bombing, and in some technology, it is too small that heat-transfer working medium accounts for the volume ratio of confined space, dry-out easily appears in thermal-collecting tube in diabatic process, conduct heat slower.
The utility model content
The purpose of this utility model is to be to provide a kind of Novel all-glass heat pipe solar vacuum heat-collecting pipe, and it has safe and reliable, and is easy to make, cost is lower, and thermal-collecting tube transfer working medium in heat content is reasonable, makes the heat exchange of water heater short start-up time, quick heating, thermal efficiency advantages of higher.
The technical solution of the utility model is: a kind of Novel all-glass heat pipe solar vacuum heat-collecting pipe, comprise glass outer tube, glass inner tube, be vacuum interlayer between described glass inner tube and the glass outer tube, an end of described glass inner tube is dome-shaped for sealing, and is fixing by the supporting of supporting fastener.
Deposit the solar energy selective absorbing membranous layer on the described glass inner tube outer wall; The inner chamber of described glass inner tube is confined space, is marked with heat-transfer working medium in described confined space.
Described heat-transfer working medium is the mixed solution of inorganic acid and salt solution.The volume of described heat-transfer working medium accounts for the volume ratio of tight Container Volume of Methane greater than 0.2%, less than 1.0%.
Described glass inner tube is than 1 ~ 4 centimetre of the outer pipe range of glass.After glass outer tube and the glass inner tube sealing-in, the part that docking condensation end and glass inner tube extend out seals, and does not need so special equipment just can both guarantee the convenience of inner and outer pipes sealing-in, makes simply, and simultaneously sealing-in place stress is easy to eliminate.
Further, described glass inner tube is than 1 ~ 2 centimetre of the outer pipe range of glass.
The beneficial effects of the utility model:
1, rational heat-transfer working medium content both can reduce the pressure of confined space, had guaranteed that glass is in the pressure range that can bear, and can guarantee that again dry-out appears in thermal-collecting tube in diabatic process; 2, because glass inner tube only has more 1 ~ 4 centimetre of glass outer tube, so can finish easily the sealing-in of glass inner and outer pipe, do not need to drop into professional equipment or add a heat pipe, cost of manufacture reduces greatly; 3, dock in addition condensation end and seal with elongation glass inner tube out, guaranteed like this thinner thickness of butt end and inner tube sealing-in place, stress is easily eliminated, and pipe is difficult for bursting.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Be described further below in conjunction with 1 pair of the utility model of accompanying drawing.
As shown in Figure 1: a kind of Novel all-glass heat pipe solar vacuum heat-collecting pipe, comprise glass outer tube 2, glass inner tube 4, be vacuum interlayer 8 between described glass inner tube 4 and the glass outer tube 2, an end of described glass inner tube 4 is dome-shaped for sealing, and is fixing by 5 supportings of supporting fastener.
Deposit solar energy selective absorbing membranous layer 3 on described glass inner tube 4 outer walls; The inner chamber of described glass inner tube 4 is confined space 7, is marked with heat-transfer working medium 6 in described confined space 7.
Described heat-transfer working medium 6 is the mixed solution of inorganic acid and salt solution.The volume of described heat-transfer working medium 6 accounts for the volume ratio of confined space 7 volumes greater than 0.2%, less than 1.0%.
Described glass inner tube 4 is than 1 ~ 4 centimetre of glass outer tube 2 length, after glass outer tube 2 and glass inner tube 4 sealing-ins, docking condensation end 1 and glass inner tube 4 elongations part out seal, do not need so special equipment just can both guarantee the convenience of inner and outer pipes sealing-in, make simply, simultaneously sealing-in place 9 stress are easy to eliminate.
Further, described glass inner tube is than 1 ~ 2 centimetre of the outer pipe range of glass.
Claims (3)
1. Novel all-glass heat pipe solar vacuum heat-collecting pipe, it is characterized in that: comprise glass outer tube (2), glass inner tube (4), vacuum interlayer (8) between described glass inner tube (4) and the glass outer tube (2), one end of described glass inner tube (4) is dome-shaped for sealing, and is fixing by supporting fastener (5) supporting; Deposit solar energy selective absorbing membranous layer (3) on described glass inner tube (4) outer wall; The inner chamber of described glass inner tube (4) is confined space (7), is marked with heat-transfer working medium (6) in described confined space (7); Described glass inner tube (4) is than long 1 ~ 4 centimetre of glass outer tube (2), and docking condensation end (1) and glass inner tube (4) elongation part out seal.
2. a kind of Novel all-glass heat pipe solar vacuum heat-collecting pipe according to claim 1, it is characterized in that: described glass inner tube (4) is than long 1 ~ 2 centimetre of glass outer tube (2).
3. a kind of Novel all-glass heat pipe solar vacuum heat-collecting pipe according to claim 1, it is characterized in that: the volume of described heat-transfer working medium (6) accounts for the volume ratio of confined space (7) volume greater than 0.2%, less than 1.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389510 CN202902664U (en) | 2012-08-08 | 2012-08-08 | Novel all-glass heat-tube-type solar vacuum heat-collecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389510 CN202902664U (en) | 2012-08-08 | 2012-08-08 | Novel all-glass heat-tube-type solar vacuum heat-collecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202902664U true CN202902664U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220389510 Expired - Lifetime CN202902664U (en) | 2012-08-08 | 2012-08-08 | Novel all-glass heat-tube-type solar vacuum heat-collecting tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN202902664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141038A (en) * | 2020-01-16 | 2020-05-12 | 河北道荣新能源科技有限公司 | Three-tube butt joint structure and method of solar heat collection tube |
-
2012
- 2012-08-08 CN CN 201220389510 patent/CN202902664U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141038A (en) * | 2020-01-16 | 2020-05-12 | 河北道荣新能源科技有限公司 | Three-tube butt joint structure and method of solar heat collection tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |