CN207299585U - A kind of solar molten salt vaporising device of two-tube harden structure - Google Patents
A kind of solar molten salt vaporising device of two-tube harden structure Download PDFInfo
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- CN207299585U CN207299585U CN201720289127.9U CN201720289127U CN207299585U CN 207299585 U CN207299585 U CN 207299585U CN 201720289127 U CN201720289127 U CN 201720289127U CN 207299585 U CN207299585 U CN 207299585U
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- tube
- fused salt
- evaporator
- harden structure
- salt
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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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- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The utility model discloses a kind of solar molten salt vaporising device of two-tube harden structure, the fused salt evaporator of the two-tube harden structure of the device has two tube sheets being separated from each other, the input end and the port of export of heat exchanger tube are respectively arranged on two tube sheets, the import and export end of pipe is closely connected with tube sheet by way of welding or expanded joint respectively；The shape of fused salt evaporator can be the structure of the type such as U-shaped, semi-circular or near-ring shape.Import and outlet completely separable, uniformity of temperature profile each tube sheet on of the evaporator of this two-tube harden structure of the utility model fused salt, thereby eliminate the root of thermal (temperature difference) stress generation, improve reliability and the service life of fused salt evaporator.
Description
Technical field
The utility model belongs to the technical field of solar energy high temperature heat utilization, and in particular to a kind of sun of two-tube harden structure
Can fused salt vaporising device.
Background technology
The hot generation technology of solar energy high temperature is the important directions that solar energy scale utilizes, and fossil energy is solved to the mankind
The problems such as crisis, air pollution, has far-reaching significance.Wherein tower condensing thermal power generation technology is excellent with large capacity, high parameter etc.
Point, especially with the tower photo-thermal power station of heat accumulation, due to longer power generation duration and the output of more stable electric energy,
Have broad application prospects.It is built or almost spread over each continent in the tower photo-thermal power station project built, the technology path exhibition
Powerful market and vitality are shown.The tower type thermal generation cause in China is accumulated by the research and technology of early period, is also located at present
In demonstrationization operation stage.09 month 2016, (capacity was for the demonstration electricity price of China's solar energy thermal-power-generating and demonstrative project issue
1.35GW), it is anticipated that the solar energy thermal-power-generating cause in China will welcome a brand-new developing stage.
In tower type thermal generation technology path, it is at most device of working medium and fused salt working medium technology to use at present.Device of working medium skill
Art has the advantages such as working medium is cheap, safe, initial cost cost is low, but the technology also has high operating pressure, water and steam
The problems such as heat accumulation is difficult.And use the solar heat power generation system of fused salt working medium low, easy with operating temperature height, operating pressure
Realize the advantages that extensive heat accumulation, power output are stable, power grid receives degree high, but salt melting system also has the spy of system complex
Point.The solar-thermal generating system using fused salt as heat absorption, heat-storage medium also needs to special steam generating system at the same time：Stored up using fused salt
The heat deposited produces the steam of high parameter.Existing evaporator generally use is that tube shell type structure pattern (walk pipe side, steam by fused salt
Hair process occurs in shell-side), but when this structure is applied to solar molten salt vapo(u)rization system, usually needed on evaporator fused salt tube sheet
The very high temperature difference is born, for typical tower solar-thermal generating system, this temperature difference reaches more than 150 DEG C sometimes,
Thus the stress of evaporator pipe sheet, even crackle etc., and be easy to cause the leakage of fused salt evaporator tube bank are may result in, so that
Influence the normal operation in steam generating system and whole photo-thermal power station.
Utility model content
The technical problems to be solved in the utility model is：Provide a kind of solar molten salt evaporation dress of two-tube harden structure
Put, the fused salt steam generator of the device has two tube sheets being separated from each other, be respectively arranged on two tube sheets heat exchanger tube into
Mouth end and the port of export, the import and export end of pipe are closely connected with tube sheet by way of welding or expanded joint respectively.Solar energy
The shape of fused salt evaporator can be the structure of the type such as U-shaped, semi-circular or near-ring shape.The evaporator of this two-tube harden structure
The import of fused salt with exporting completely separable, the uniformity of temperature profile on each tube sheet, thermal (temperature difference) stress generation is thereby eliminated
Root, improves reliability and the service life of fused salt evaporator.
The technical scheme in the invention for solving the above technical problem is：A kind of solar molten salt of two-tube harden structure
Vaporising device, includes fused salt evaporator, drum, carbonated drink tedge and the down-comer of two-tube harden structure, and two-tube harden structure melts
Salt evaporator includes evaporator shell, fused salt import tube sheet, fused salt outlet tube sheet and heat-exchanging tube bundle, fused salt import tube sheet, fused salt
Outlet tube sheet, heat-exchanging tube bundle are all contained in evaporator shell body, and the both ends of heat-exchanging tube bundle go out with fused salt import tube sheet, fused salt respectively
Mouthful tube sheet is closely connected by way of welding or expanded joint, hot melt salt from the fused salt import tube sheet of the evaporator of two-tube harden structure into
Enter to heat-exchanging tube bundle, the water on fused salt release heat evaporator shell side becomes saturated vapor, then exports tube sheet stream from fused salt
Go out the fused salt evaporator of two-tube harden structure, wherein the saturated vapor produced carries saturated water enters vapour from carbonated drink tedge
In bag, steam-water separation process is completed in drum, steam output is sent to next stage heat exchanger, the water in drum by down-comer into
Enter the evaporator to two-tube harden structure.
Wherein, the shape of the fused salt evaporator of two-tube harden structure can be U-shaped, semi-circular or loop configuration, two-tube hardened
The fused salt evaporator of structure is completely separable with exporting the import of fused salt.
The principle of the utility model is：Currently used steam generator generally use is single tube plate structure, this
The import of kind evaporator, outlet fused salt tube end are distributed on same tube sheet.It is 50MW, 100MW corresponding to power generation capacity
Solar molten salt heat generating system, the fused salt inlet and outlet temperature difference of evaporator would generally reach more than 100 DEG C under design conditions,
The temperature difference may be more than 150 DEG C under low load condition.The big temperature difference on same tube sheet can produce very high internal stress, thus may be used
It can cause the crackle of evaporator pipe sheet and the mouth of pipe etc., so as to influence the reliability of steam generating system.The utility model carries
A kind of solar molten salt vaporising device of two-tube harden structure, the work of the solar molten salt vaporising device of this two-tube harden structure are supplied
Make principle as shown in Figure 1, the import of evaporator tube bank is arranged on independent tube sheet with outlet, by changing between tube sheet
Heat pipe bundle connects, and tube sheet is linked together with tube end by welding or expanding joint process.According to solar molten salt evaporator
The characteristics of, the shape of evaporator is usually designed to large U type, and this two-tube harden structure can make the Temperature Distribution on same tube sheet equal
It is even, the root of thermal (temperature difference) stress generation is eliminated, improves reliability and the service life of fused salt evaporator.Salt is heated from high warm tube plate end
Restrained into evaporator, bring out to come from low temperature tube sheet, the water in outside is transferred heat to by heat-transfer surface tube bank, produce corresponding pressure
Saturated vapor under power, steam water interface are entered in the drum on top by tedge, and steam separation is completed in drum.
The utility model has following remarkable advantage relative to traditional vaporising device：
(1) the double tubesheet design of the utility model solar molten salt evaporator, makes the Temperature Distribution on tube sheet become uniform,
The thermal (temperature difference) stress of single tube plate structure is thereby eliminated, improves reliability and the service life of evaporator；
(2) the utility model fused salt evaporator shape employs the designing scheme (or semi-circular, near-ring shape etc.) of large U type,
It is possible thereby to effectively absorb evaporator in the differential expansion (cold conditions to hot temperature rise is close to 450 DEG C) of cold conditions to hot generation, subtract
Small swelling stress；
(3) design method of the utility model fused salt evaporator large U type can increase the elbow radius of heat-transfer surface tube bank, subtract
Little tradition evaporator end is washed away, and reduces the wall thickness reduction amount during bend pipe, improves the reliability of evaporator.
Brief description of the drawings
Fig. 1 is a kind of principle schematic of the solar molten salt vaporising device of two-tube harden structure of the utility model.
Fig. 2 is the structure diagram of the evaporator 1 of two-tube harden structure.
Reference numeral implication is：1 is the evaporator of two-tube harden structure, and 2 be drum, and 3 be carbonated drink tedge, and 4 be down-comer,
11 be evaporator shell, and 12 be fused salt import tube sheet, and 13 export tube sheet for fused salt, and 14 be heat-exchanging tube bundle.
Embodiment
Below in conjunction with the accompanying drawings and embodiment further illustrates the utility model.
As shown in Figure 1, a kind of solar molten salt vaporising device of two-tube harden structure of the utility model, including two-tube harden structure
Evaporator 1, drum 2, carbonated drink tedge 3 and down-comer 4.Wherein, as shown in Fig. 2, the evaporator 1 of two-tube harden structure includes steaming
Send out device housing 11, fused salt import tube sheet 12, fused salt outlet tube sheet 13 and heat-exchanging tube bundle 14.Fused salt import tube sheet 12, fused salt outlet
Tube sheet 13, heat-exchanging tube bundle 14 are all contained in evaporator shell 11, the both ends of heat-exchanging tube bundle 14 respectively with fused salt import tube sheet 12,
Fused salt exports tube sheet 13 and is closely connected by way of welding or expanded joint.For complete set vaporising device further include fused salt and
The inlet and outlet adapter of water/water vapour, water separator, the safety valve for preventing superpressure, manhole door for maintenance etc., due to upper
It is not high to state the basic principle relevance of component and the utility model, is not elaborated herein.
When the present apparatus works in the normal mode, fused salt import tube sheet 12 of the salt from the evaporator 1 of two-tube harden structure is heated
Heat-exchanging tube bundle 14 is entered, the water of 11 side of fused salt release heat evaporator shell becomes saturated vapor, then is exported from fused salt
Tube sheet 13 flows out the evaporator 1 of two-tube harden structure.The saturated vapor produced in the above process carries saturated water from carbonated drink
Riser 3 is entered in drum 2.Steam-water separation process is completed in drum 2, steam, which exports, is sent to next stage heat exchanger, in drum
Water the evaporator 1 of two-tube harden structure is entered by down-comer 4.
A kind of solar molten salt vaporising device of two-tube harden structure of the utility model, fundamentally changes conventional evaporator
Structure type, single tube plate structure is become independent two-tube harden structure, and make the shape of New Evaporator in large U type, semi-circular
Or nearly loop configuration.Evaporator using fused salt as heat carrier, can eliminate the big temperature difference distribution on tube sheet, make on same tube sheet
Uniformity of temperature profile, has been inherently eliminated the root of thermal (temperature difference) stress generation, improves reliability and the service life of evaporator, has wide
Wealthy application prospect.
Claims (2)
- A kind of 1. solar molten salt vaporising device of two-tube harden structure, it is characterised in that：The fused salt for including two-tube harden structure steams Hair device (1), drum (2), carbonated drink tedge (3) and down-comer (4), the fused salt evaporator (1) of two-tube harden structure include evaporator Housing (11), fused salt import tube sheet (12), fused salt outlet tube sheet (13) and heat-exchanging tube bundle (14), fused salt import tube sheet (12), melt Salt outlet tube sheet (13), heat-exchanging tube bundle (14) are all contained in evaporator shell (11), the both ends of heat-exchanging tube bundle (14) respectively with Fused salt import tube sheet (12), fused salt outlet tube sheet (13) are closely connected by way of welding or expanded joint, heat salt from double tubesheet The fused salt import tube sheet (12) of the evaporator (1) of structure enters heat-exchanging tube bundle (14), fused salt release heat evaporator shell The water of body (11) side becomes saturated vapor, then the fused salt evaporator (1) of two-tube harden structure is flowed out from fused salt outlet tube sheet (13), its The saturated vapor of middle generation carries saturated water and is entered from carbonated drink tedge (3) in drum (2), is completed in drum (2) Steam-water separation process, steam, which exports, is sent to next stage heat exchanger, and the water in drum (2) enters double tubesheet by down-comer (4) The evaporator (1) of structure.
- A kind of 2. solar molten salt vaporising device of two-tube harden structure according to claim 1, it is characterised in that：Double tubesheet The shape of the fused salt evaporator (1) of structure is U-shaped, semi-circular or loop configuration, and the fused salt evaporator (1) of two-tube harden structure is molten The import of salt is completely separable with exporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720289127.9U CN207299585U (en) | 2017-03-23 | 2017-03-23 | A kind of solar molten salt vaporising device of two-tube harden structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720289127.9U CN207299585U (en) | 2017-03-23 | 2017-03-23 | A kind of solar molten salt vaporising device of two-tube harden structure |
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| CN207299585U true CN207299585U (en) | 2018-05-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855323A (en) * | 2017-03-23 | 2017-06-16 | 杭州锅炉集团股份有限公司 | A kind of solar molten salt vaporising device of double tubesheet structure |
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2017
- 2017-03-23 CN CN201720289127.9U patent/CN207299585U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855323A (en) * | 2017-03-23 | 2017-06-16 | 杭州锅炉集团股份有限公司 | A kind of solar molten salt vaporising device of double tubesheet structure |
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Address after: 1216, danionggang Road, Jianggan District, Hangzhou City, Zhejiang Province, 310021 Patentee after: Xizi clean energy equipment manufacturing Co.,Ltd. Address before: 1216, danionggang Road, Jianggan District, Hangzhou City, Zhejiang Province, 310021 Patentee before: HANGZHOU BOILER GROUP Co.,Ltd. |