CN101718477A - Solar thermal collector freezing prevention system - Google Patents
Solar thermal collector freezing prevention system Download PDFInfo
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- CN101718477A CN101718477A CN200910310555A CN200910310555A CN101718477A CN 101718477 A CN101718477 A CN 101718477A CN 200910310555 A CN200910310555 A CN 200910310555A CN 200910310555 A CN200910310555 A CN 200910310555A CN 101718477 A CN101718477 A CN 101718477A
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- pipe
- thermal collector
- solar thermal
- heat exchanger
- sewage
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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 invention discloses a solar thermal collector freezing prevention system and relates to a thermal collector freezing prevention system. The invention solves the problem of frost cracks of valves and pipelines due to residual water in the system by a backflow and exhaust system and the problems of large initial investment and easy environmental pollution of a freezing prevention liquid system. A sewage heat exchanger, a solar thermal collector and the terminal of a heat user are sequentially communicated by a cycle working medium charge pipe; the sewage heat exchanger is communicated with the terminal of the heat user by a cycle working medium backflow pipe; a circulating water pump is installed on the cycle working medium charge pipe; one end of a first communicating pipe is communicated with the cycle working medium charge pipe, and the other end of the first communicating pipe is communicated with the cycle working medium backflow pipe; a first valve is installed on the first communicating pipe, a second valve is installed on the cycle working medium backflow pipe, and a high-temperature sewage pipe and a low-temperature sewage pipe are installed on the sewage heat exchanger. The invention reduces the initial investment of a freezing prevention liquid system of the solar thermal collector and solves the problems of environmental pollution and frost cracks of the pipelines and the valves.
Description
Technical field
The present invention relates to a kind of thermal collector freezing prevention system.
Background technology
Because China some areas outside air temperature in winter is on the low side, when applied solar energy, must consider the antifreeze problem of solar thermal collector.And in the antifreeze design of solar thermal collector, national standard is generally recommended emptying system, is flow back to system and anti-icing fluid system.Flow back to and emptying system, the problem owing at the not in place and equipment of installing itself very easily causes residual moisture content in the system, thereby causes the bursting by freezing of valve and pipeline, influences the safe operation of system.The anti-icing fluid system, high concentration anti-icing fluid system particularly, its initial cost is bigger, its price is approximately 150～200 yuan of every square meter solar thermal collectors, and because solar thermal collector is positioned at outdoor, be subjected to the impact of external force easily and cause leakage, thereby cause the pollution of environment and waste economically.
Summary of the invention
The objective of the invention is very easily to cause residual moisture content in the system in order to solve to flow back to emptying system, cause the bursting by freezing problem of valve and pipeline, and anti-icing fluid system initial cost causes environmental pollution problems greatly and easily, and then a kind of solar thermal collector freezing prevention system that provides.
Technical scheme of the present invention is: a kind of solar thermal collector freezing prevention system comprises first sewage heat exchanger, solar thermal collector, first water circulating pump, first hot user's end, the high temperature sewage pipe, the low-temperature sewage pipe, cycle fluid enters pipe, the cycle fluid return duct, first valve, second valve and first communicating pipe, described first sewage heat exchanger, solar thermal collector and first hot user's end are set up in parallel, described first sewage heat exchanger, solar thermal collector and first hot user's end enter pipe by cycle fluid successively and are communicated with, described first sewage heat exchanger and the first hot user are terminal by the connection of cycle fluid return duct, the cycle fluid that described first water circulating pump is installed between solar thermal collector and the first hot user's end enters on the pipe, and first water circulating pump enters pipe with cycle fluid and is communicated with, the end of described first communicating pipe enters pipe with cycle fluid between first sewage heat exchanger and the solar thermal collector and is communicated with, the other end of first communicating pipe is communicated with the cycle fluid return duct, first valve was installed on first communicating pipe, second valve is installed on the cycle fluid return duct between first communicating pipe and first sewage heat exchanger, described high temperature sewage pipe and low-temperature sewage pipe are installed on first sewage heat exchanger, and are communicated with first sewage heat exchanger.
The present invention compared with prior art has following effect: the present invention has reduced the first cost of solar thermal collector freezing prevention liquid systems, has stopped problem of environmental pollution simultaneously; The present invention has also solved because the solar energy that installation or other reasons cause flows back to or the pipeline and the valve bursting by freezing problem of emptying system; The present invention is particularly useful for having the sewage area of continual and steady flow, as oil field etc.; The present invention is widely used, and its hot user's end can be building and heating, domestic hot-water and industrial oil field pipeline tracing etc.
Description of drawings
Fig. 1 is integrally-built systematic schematic diagram of the present invention (arrow is represented the flow direction of cycle fluid among the figure), and Fig. 2 is the present invention and sewage source heat pump coupled system schematic diagram (arrow is represented the flow direction of cycle fluid among the figure).
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, a kind of solar thermal collector freezing prevention system of present embodiment comprises first sewage heat exchanger 1, solar thermal collector 2, first water circulating pump 4, first hot user's end 5, high temperature sewage pipe 6, low-temperature sewage pipe 7, cycle fluid enters pipe 8, cycle fluid return duct 9, first valve 10, second valve 11 and first communicating pipe 12, described first sewage heat exchanger 1, solar thermal collector 2 and first hot user's end 5 are set up in parallel, described first sewage heat exchanger 1, solar thermal collector 2 and first hot user's end 5 enter pipe 8 by cycle fluid successively and are communicated with, described first sewage heat exchanger 1 and the first hot user terminal 5 are communicated with by cycle fluid return duct 9, the cycle fluid that described first water circulating pump 4 is installed between solar thermal collector 2 and the first hot user's end 5 enters on the pipe 8, and first water circulating pump 4 enters pipe 8 with cycle fluid and is communicated with, the end of described first communicating pipe 12 enters pipe 8 with cycle fluid between first sewage heat exchanger 1 and the solar thermal collector 2 and is communicated with, the other end of first communicating pipe 12 is communicated with cycle fluid return duct 9, first valve 10 was installed on first communicating pipe 12, second valve 11 is installed on the cycle fluid return duct 9 between first communicating pipe 12 and first sewage heat exchanger 1, described high temperature sewage pipe 6 and low-temperature sewage pipe 7 are installed on first sewage heat exchanger 1, and are communicated with first sewage heat exchanger 1.
The specific embodiment two: present embodiment is described in conjunction with Fig. 1, the winterization system of present embodiment also increases first expansion tank 3 and second communicating pipe 13, described first expansion tank 3 enters pipe 8 by second communicating pipe 13 and cycle fluid and is communicated with, and second communicating pipe 13 entered on the pipe 8 at the cycle fluid between the solar thermal collector 2 and first water circulating pump 4.So be provided with, play the effect of level pressure supply.Other composition is identical with the specific embodiment one with annexation.
The non-antifreeze operational mode of the winterization system of present embodiment: cycle fluid is higher than its freezing point more than 3 ℃ in this moment solar thermal collector freezing prevention system, because this moment, system need not antifreezely, first valve 10 is opened, and second valve 11 is closed; Cycle fluid flows out from the first hot user terminal 5, through first valve 10, after entering solar thermal collector 2 and heating up, resupplies first hot user's end 5 through first water circulating pump 4; First expansion tank 3 plays the effect of level pressure supply, and the flow direction of cycle fluid is moved towards referring to the arrow among Fig. 1.
The antifreeze operational mode of the winterization system of present embodiment: the interior cycle fluid of solar thermal collector freezing prevention system this moment is lower than its freezing point below 3 ℃, because this moment, system needed antifreeze; First valve 10 is closed, and second valve 11 is opened; Cycle fluid flows out from the first hot user terminal 5, through second valve 11, enters first sewage heat exchanger 1 and is warmed up to the cycle fluid freezing point more than 3 ℃, and the solar thermal collector 2 of flowing through again resupplies first hot user's end 5 through first water circulating pump 4; First expansion tank 3 plays the effect of level pressure supply, and the flow direction of cycle fluid is moved towards referring to the arrow among Fig. 1.
The specific embodiment three: in conjunction with Fig. 2 present embodiment is described, the winterization system of present embodiment and sewage source heat pump coupled system enter pipe 8, cycle fluid return duct 9, first valve 10, second valve 11, first communicating pipe 12 by sewage source heat pump system, first sewage heat exchanger 1, solar thermal collector 2, first expansion tank 3, first water circulating pump, 4, first hot user's end 5, high temperature sewage pipe 6, low-temperature sewage pipe 7, cycle fluid and formed second communicating pipe 13; Described first sewage heat exchanger 1, solar thermal collector 2 and first hot user's end 5 are set up in parallel, described first sewage heat exchanger 1, solar thermal collector 2 and first hot user's end 5 enter pipe 8 by cycle fluid successively and are communicated with, described first sewage heat exchanger 1 and the first hot user terminal 5 are communicated with by 9 series connection of cycle fluid return duct, the cycle fluid that described first water circulating pump 4 is installed between solar thermal collector 2 and the first hot user's end 5 enters on the pipe 8, and first water circulating pump 4 enters pipe 8 with cycle fluid and is communicated with, the end of described first communicating pipe 12 enters pipe 8 with cycle fluid between first sewage heat exchanger 1 and the solar thermal collector 2 and is communicated with, the other end of first communicating pipe 12 is communicated with cycle fluid return duct 9, first valve 10 was installed on first communicating pipe 12, second valve 11 is installed on the cycle fluid return duct 9 between first communicating pipe 12 and first sewage heat exchanger 1, described high temperature sewage pipe 6 and low-temperature sewage pipe 7 are installed on first sewage heat exchanger 1, and are communicated with first sewage heat exchanger 1; Described sewage source heat pump system is by second sewage heat exchanger 21, source pump 22, second hot user's end 25, second expansion tank 27, the 3rd expansion tank 23, second water circulating pump 26, the 3rd water circulating pump 24, many pipelines 28, third connecting pipe 29 and the 4th communicating pipe 30 are formed, described second sewage heat exchanger 21, source pump 22 and second hot user's end 25 are set up in parallel, described second sewage heat exchanger 21, the lower end of source pump 22 and second hot user's end 25 is communicated with successively by corresponding pipeline 28, described second sewage heat exchanger 21, the upper end of source pump 22 and second hot user's end 25 is communicated with successively by corresponding pipeline 28, described second water circulating pump 26 is installed on the pipeline 22 of second sewage heat exchanger 21 and source pump 22 lower ends, and be communicated with pipeline 22, described the 3rd water circulating pump 24 is installed on the pipeline 22 of source pump 22 and terminal 25 lower ends of the second hot user, and be communicated with pipeline 28, described second expansion tank 27 is installed on the pipeline 28 between second water circulating pump 26 and the source pump 22 by third connecting pipe 29, described the 3rd expansion tank 23 is by be installed on the pipeline 28 between source pump 22 and the 3rd water circulating pump 24 the 4th communicating pipe 30, and described sewage source heat pump system is communicated with first sewage heat exchanger 1 by low-temperature sewage pipe 7.
The antifreeze operational mode of present embodiment: the interior cycle fluid of solar thermal collector freezing prevention system this moment is lower than its freezing point below 3 ℃, because this moment, system needed antifreeze.First valve 10 is closed, and second valve 11 is opened; Cycle fluid flows out from the first hot user terminal 5, through second valve 11, enters first sewage heat exchanger 1 and is warmed up to the cycle fluid freezing point more than 3 ℃, and the solar thermal collector 2 of flowing through again resupplies first hot user's end 5 through first water circulating pump 4; First expansion tank 3 plays the effect of level pressure supply; High temperature sewage enters and flows out after the 21 further heat exchange of second sewage heat exchanger are lowered the temperature again then by after first sewage heat exchanger, the 1 heat exchange cooling; From second sewage heat exchanger 21 take heat in source pump 22 through second water circulating pump 26 this moment, by the 3rd water circulating pump 24 heat supplied with second hot user's end 25 again after heating up; Second expansion tank 27, the 3rd expansion tank 23 play the effect of level pressure supply, and the flow direction of cycle fluid is moved towards referring to the arrow among Fig. 2.
Claims (2)
1. solar thermal collector freezing prevention system, it comprises first sewage heat exchanger (1), solar thermal collector (2), first water circulating pump (4), first hot user's end (5), high temperature sewage pipe (6), low-temperature sewage pipe (7), cycle fluid enters pipe (8), cycle fluid return duct (9), first valve (10), second valve (11) and first communicating pipe (12), it is characterized in that: described first sewage heat exchanger (1), solar thermal collector (2) and first hot user's end (5) are set up in parallel, described first sewage heat exchanger (1), solar thermal collector (2) and first hot user's end (5) enter pipe (8) by cycle fluid successively and are communicated with, described first sewage heat exchanger (1) and first hot user's end (5) are communicated with by cycle fluid return duct (9), the cycle fluid that described first water circulating pump (4) is installed between solar thermal collector (2) and the first hot user's end (5) enters on the pipe (8), and first water circulating pump (4) enters pipe (8) with cycle fluid and is communicated with, the end of described first communicating pipe (12) enters pipe (8) with cycle fluid between first sewage heat exchanger (1) and the solar thermal collector (2) and is communicated with, the other end of first communicating pipe (12) is communicated with cycle fluid return duct (9), first valve (10) was installed on first communicating pipe (12), second valve (11) is installed on the cycle fluid return duct (9) between first communicating pipe (12) and first sewage heat exchanger (1), described high temperature sewage pipe (6) and low-temperature sewage pipe (7) are installed on first sewage heat exchanger (1), and are communicated with first sewage heat exchanger (1).
2. according to the described a kind of solar thermal collector freezing prevention system of claim 1, it is characterized in that: described winterization system also comprises first expansion tank (3) and second communicating pipe (13), described first expansion tank (3) enters pipe (8) by second communicating pipe (13) and cycle fluid and is communicated with, and the cycle fluid that is positioned at second communicating pipe (13) between solar thermal collector (2) and first water circulating pump (4) enters on the pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910310555A CN101718477A (en) | 2009-11-27 | 2009-11-27 | Solar thermal collector freezing prevention system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910310555A CN101718477A (en) | 2009-11-27 | 2009-11-27 | Solar thermal collector freezing prevention system |
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| CN101718477A true CN101718477A (en) | 2010-06-02 |
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| CN200910310555A Pending CN101718477A (en) | 2009-11-27 | 2009-11-27 | Solar thermal collector freezing prevention system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615839A (en) * | 2013-10-29 | 2014-03-05 | 大连葆光节能空调设备厂 | Self-cleaning heat transfer enhanced solar sewage source heat pump system |
| CN103629973A (en) * | 2013-10-29 | 2014-03-12 | 大连葆光节能空调设备厂 | On-line self-cleaning heat exchange enhancement solar sewage source heat pump system |
| CN103629837A (en) * | 2013-10-29 | 2014-03-12 | 大连葆光节能空调设备厂 | Efficient sewage heat exchange system capable of carrying out on-line cleaning and automatic decontamination |
| CN103629972A (en) * | 2013-10-29 | 2014-03-12 | 大连葆光节能空调设备厂 | On-line self-cleaning heat exchange enhancement sewage source heat pump system |
-
2009
- 2009-11-27 CN CN200910310555A patent/CN101718477A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615839A (en) * | 2013-10-29 | 2014-03-05 | 大连葆光节能空调设备厂 | Self-cleaning heat transfer enhanced solar sewage source heat pump system |
| CN103629973A (en) * | 2013-10-29 | 2014-03-12 | 大连葆光节能空调设备厂 | On-line self-cleaning heat exchange enhancement solar sewage source heat pump system |
| CN103629837A (en) * | 2013-10-29 | 2014-03-12 | 大连葆光节能空调设备厂 | Efficient sewage heat exchange system capable of carrying out on-line cleaning and automatic decontamination |
| CN103629972A (en) * | 2013-10-29 | 2014-03-12 | 大连葆光节能空调设备厂 | On-line self-cleaning heat exchange enhancement sewage source heat pump system |
| CN103615839B (en) * | 2013-10-29 | 2015-06-03 | 大连葆光节能空调设备厂 | Self-cleaning heat transfer enhanced solar sewage source heat pump system |
| CN103629973B (en) * | 2013-10-29 | 2015-06-03 | 大连葆光节能空调设备厂 | On-line self-cleaning heat exchange enhancement solar sewage source heat pump system |
| CN103629837B (en) * | 2013-10-29 | 2015-06-10 | 大连葆光节能空调设备厂 | Efficient sewage heat exchange system capable of carrying out on-line cleaning and automatic decontamination |
| CN103629972B (en) * | 2013-10-29 | 2015-06-10 | 大连葆光节能空调设备厂 | On-line self-cleaning heat exchange enhancement sewage source heat pump system |
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Open date: 20100602 |