CN102928566A - Testing type high-temperature molten salt loop - Google Patents
Testing type high-temperature molten salt loop Download PDFInfo
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- CN102928566A CN102928566A CN2012104768800A CN201210476880A CN102928566A CN 102928566 A CN102928566 A CN 102928566A CN 2012104768800 A CN2012104768800 A CN 2012104768800A CN 201210476880 A CN201210476880 A CN 201210476880A CN 102928566 A CN102928566 A CN 102928566A
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Abstract
The invention discloses a testing type high-temperature molten salt loop and relates to a solar heat generation heat accumulation loop. The testing type high-temperature molten salt loop comprises five parts, wherein the first part is a molten salt box, wherein the molten salt is heated by the molten salt box through current, so that the molten salt is dissolved and flows into the loop through a high-temperature baffle valve; the second part is a molten salt heating introduction section comprising a section of molten salt loop, a high-temperature flow meter and an expansion box; the third part is a static check box, after the molten salt is heated and molten in the molten salt box, the molten salt flows into the loop, and the static check box; the fourth part is a dynamic test section located below the loop, the molten salt stored in the molten salt heat storage bank is extracted and returns in the loop through a high-temperature molten salt pump so as to form a cycle; and the fifth part is the molten salt heat storage bank. According to the testing type high-temperature molten salt loop, the molten salt flows in a special pipeline, the interaction conditions of different materials and the molten salt can be tested, and different sealing joints can be measured by using a heat storage tank.
Description
Technical field
The present invention relates to solar energy thermal-power-generating heat accumulation loop, be specifically related to a kind of test type high-temperature molten salt loop.
Background technology
The paraboloid trough type system is the most ripe, the most widely used solar energy thermal-power-generating technology of present technology in the solar energy thermal-power-generating, system mainly is comprised of the two large divisions: the solar energy heat-collection field that is made of hundreds of row paraboloid trough type catoptrons, and the traditional steam turbine Blast Furnace Top Gas Recovery Turbine Unit (TRT) of a cover.The optically focused reflection groove is made by surface treated sheet metal, the single shaft sun tracing system guarantees accurately to reflex to 80 ~ 100 times of sunshines that converge on the heated absorption tube, and the synthetic oil that flows in the pipeline is heated to 400 ℃ high temperature (novel medium such as salt is melted in use can reach higher temperature), high-temperature hot oil is transported to a heat exchanger, and produces there steam and drive traditional turbogenerator.In some newer slot type CSP power stations, also has an important component part: heat storage can.Its use is melted salt and as medium the form of sun power with heat energy is stored, and emits heat when needing again and is used for generating.But the unit power construction cost that adds the obvious raising project of joining of heat-storing device.Because the thermal medium synthetic oil of the at present main employing of slot type CSP power station institute can only be heated to 400 ℃, and the quality of steam that produces under this temperature is general, limited the operational efficiency of rear end genset, thereby made the annual generating efficiency in whole power station only can reach 14% ~ 16%.In some large-scale demonstrative projects of building, attempting using the method for melting the Novel heat-conducting media (can be heated to the high temperature more than 550 ℃) such as salt to improve the generating efficiency in slot type CSP power station at present.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of dynamic property of testing different materials, different insulation materials, and the test type high-temperature molten salt loop of different valve interface sealing effectiveness.
Technical matters to be solved by this invention realizes by the following technical solutions,
A kind of test type high-temperature molten salt loop is characterized in that: comprise five parts,
First is for melting the salt case, and the described salt case that melts is take insulation can as main body, and the outside resistance wire that twines utilizes current flow heats to melt salt, and it is dissolved, and flow in the loop by the high temperature flapper valve, and with temperature control system, the salt heating-up temperature is melted in control again;
Second portion is derived section for melting the salt heating, the described salt heating derivation Duan Youyi section of melting is melted salt loop, high temperature flowmeter, trunk for expansion composition, melt the flow velocity of salt in the high temperature flowmeter control loop, trunk for expansion stable loop internal pressure, loop itself is by the insulation material parcel, and the inner resistance wire that twines is guaranteed to melt salt and do not condensed in inside, loop, with temperature control system, the salt heating-up temperature is melted in control;
Third part is the static check case, melt salt after melting salt case heating and melting, flow in the loop, also flow in the static check case simultaneously, different materials can be put into the static check case and test itself and the interaction of melting salt, and can learn state and the temperature thereof of melting the salt thawing by the measurement point in the static check case, thereby can control system feedback;
The 4th part is the dynamic test section, described dynamic test section is positioned at the below in loop, by the high-temperature molten salt pump, can come back in the loop melting the salt extraction of melting of preserving in the salt heat-storing warehouse, make it form circulation, if need test, then open the high temperature flapper valve of below, can test at test section like this dynamic property of different materials, different insulation materials, and the sealing effectiveness of different valve interfaces;
The 5th part is for melting the salt heat-storing warehouse, the described salt heat-storing warehouse that melts is by heat-storing warehouse, thermopair, safety valve, water inlet, heat exchanger, the high pressure steam outlet, magnetic fluid level gauge, melting clearly the salt outlet forms, described heat-storing warehouse outside is surrounded by insulation material, make and melt salt and can in Rong Yanku, keep high temperature, described magnetic fluid level gauge is used for measuring the height that heat-storing warehouse melts salt, to its FEEDBACK CONTROL, move the water to flow into heat exchanger, the heat that melts salt under the effect of heat exchanger is passed to water, water is phase-changed into water vapour after arriving uniform temperature, and temperature constantly promotes, emit from the heat release mouth at last, experiment finishes, and then will melt salt derives from melting clearly the salt outlet, deposits in order to use next time.
The described salt return that melts adopts stainless steel material, and thickness is 5 millimeters, and internal diameter is 40 millimeters.
The invention has the beneficial effects as follows: the present invention makes melts salt and flows in special pipeline, can be used for testing different materials and melt the interaction situation of salt, and use novel heat storage can, can be used for measuring different sealing adaptors.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, a kind of test type high-temperature molten salt loop comprises five parts,
Salt case 1 is melted take insulation can 11 as main body for melting salt case 1 in first, and the outside resistance wire that twines utilizes current flow heats to melt salt, and it is dissolved, and flow in the loop by high temperature flapper valve 12, and with temperature control system, the salt heating-up temperature is melted in control again;
Second portion is derived section 2 for melting the salt heating, melting salt heating derives section 2 and melts salt loop 24, high temperature flowmeter 23, trunk for expansion 22 by one section and form, melt the flow velocity of salt in high temperature flowmeter 23 control loops 24, trunk for expansion 22 stable loops 24 internal pressures, loop 24 itself is wrapped up by insulation material, and the inner resistance wire that twines is guaranteed to melt salt and do not condensed in inside, loop, with temperature control system, the salt heating-up temperature is melted in control;
Third part is static check case 3, melt salt after melting salt case 1 heating and melting, flow in the loop 24, also flow in the static check case 3 simultaneously, different materials can be put into static check case 3 and test itself and the interaction of melting salt, and can learn state and the temperature thereof of melting the salt thawing by the measurement point in the static check case 3, thereby can control system feedback;
The 4th part is dynamic test section 4, dynamic test section 4 is positioned at the below in loop 24, by high-temperature molten salt pump 42, can come back in the loop melting the salt extraction of melting of preserving in the salt heat-storing warehouse, make it form circulation, if need test, then open the high temperature flapper valve 41 of below, can test at test section like this dynamic property of different materials, different insulation materials, and the sealing effectiveness of different valve interfaces;
The 5th part is for melting salt heat-storing warehouse 5, melt salt heat-storing warehouse 5 by heat-storing warehouse 51, thermopair 55, safety valve 52, water inlet 57, heat exchanger 53, high pressure steam outlet 56, magnetic fluid level gauge 54, melting clearly salt outlet 58 forms, heat-storing warehouse 51 outsides are surrounded by insulation material, make and melt salt and can in Rong Yanku, keep high temperature, magnetic fluid level gauge 54 is used for measuring the height that heat-storing warehouse melts salt, to its FEEDBACK CONTROL, move the water to flow into heat exchanger, the heat that melts salt under the effect of heat exchanger 53 is passed to water, water is phase-changed into water vapour after arriving uniform temperature, and temperature constantly promotes, emit from the heat release mouth at last, experiment finishes, and then will melt salt derives from melting clearly the salt outlet, deposits in order to use next time.
Melt the salt return and adopt stainless steel material, thickness is 5 millimeters, and internal diameter is 40 millimeters.
Above demonstration and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. test type high-temperature molten salt loop is characterized in that: comprise five parts,
First is for melting the salt case, and the described salt case that melts is take insulation can as main body, and the outside resistance wire that twines utilizes current flow heats to melt salt, and it is dissolved, and flow in the loop by the high temperature flapper valve, and with temperature control system, the salt heating-up temperature is melted in control again;
Second portion is derived section for melting the salt heating, the described salt heating derivation Duan Youyi section of melting is melted salt loop, high temperature flowmeter, trunk for expansion composition, melts the flow velocity of salt in the high temperature flowmeter control loop, trunk for expansion stable loop internal pressure, loop itself is by the insulation material parcel, and resistance wire is twined in inside;
Third part is the static check case, melt salt after melting salt case heating and melting, flow in the loop, also flow in the static check case simultaneously, different materials can be put into the static check case and test itself and the interaction of melting salt, and can learn state and the temperature thereof of melting the salt thawing by the measurement point in the static check case;
The 4th part is the dynamic test section, and described dynamic test section is positioned at the below in loop, by the high-temperature molten salt pump, can come back in the loop melting the salt extraction of melting of preserving in the salt heat-storing warehouse, makes it form circulation;
The 5th part is for melting the salt heat-storing warehouse, described melt the salt heat-storing warehouse by heat-storing warehouse, thermopair, safety valve, water inlet, heat exchanger, high pressure steam outlet, magnetic fluid level gauge, melt the salt outlet clearly and form, described heat-storing warehouse outside is surrounded by insulation material, make and melt salt can keep high temperature in Rong Yanku, described magnetic fluid level gauge is used for measuring the height that heat-storing warehouse melts salt.
2. test type high-temperature molten salt according to claim 1 loop, it is characterized in that: the described salt return that melts adopts stainless steel material, and thickness is 5 millimeters, and internal diameter is 40 millimeters.
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| CN201210476880.0A CN102928566B (en) | 2012-11-22 | 2012-11-22 | Test high-temperature molten salt loop |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1019875A (en) * | 1996-06-28 | 1998-01-23 | Nippon Steel Corp | Device for testing fused salt deterioration |
| JP2007119296A (en) * | 2005-10-28 | 2007-05-17 | Tanaka Kikinzoku Kogyo Kk | Heat-resistant container made of iridium |
| CN101298944A (en) * | 2008-03-21 | 2008-11-05 | 中国科学院电工研究所 | Passive molten salt thermal absorber |
| CN101666704A (en) * | 2009-09-09 | 2010-03-10 | 东莞市康达机电工程有限公司 | Quick test device and method for performances of trough type solar thermal collector |
| CN101699163A (en) * | 2009-10-28 | 2010-04-28 | 华南理工大学 | Molten salt tube-shell type steam generating device and method |
-
2012
- 2012-11-22 CN CN201210476880.0A patent/CN102928566B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1019875A (en) * | 1996-06-28 | 1998-01-23 | Nippon Steel Corp | Device for testing fused salt deterioration |
| JP2007119296A (en) * | 2005-10-28 | 2007-05-17 | Tanaka Kikinzoku Kogyo Kk | Heat-resistant container made of iridium |
| CN101298944A (en) * | 2008-03-21 | 2008-11-05 | 中国科学院电工研究所 | Passive molten salt thermal absorber |
| CN101666704A (en) * | 2009-09-09 | 2010-03-10 | 东莞市康达机电工程有限公司 | Quick test device and method for performances of trough type solar thermal collector |
| CN101699163A (en) * | 2009-10-28 | 2010-04-28 | 华南理工大学 | Molten salt tube-shell type steam generating device and method |
Non-Patent Citations (2)
| Title |
|---|
| MINLIN YANG等: "Heat transfer enhancement and performance of the molten salt receiver of a solar power tower", 《APPLIED ENERGY》, vol. 87, 17 July 2009 (2009-07-17) * |
| 朱建坤: "太阳能高温熔盐传热蓄热系统设计及实验研究", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技II辑》, no. 6, 15 June 2007 (2007-06-15) * |
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Address after: 232000 No.8, Weishi Road, high tech Zone, Huainan City, Anhui Province Patentee after: Anhui Zhongke Energy Storage Technology Co., Ltd Address before: 232000 No.8, Weishi Road, high tech Zone, Huainan City, Anhui Province Patentee before: Huainan Zhongke Energy Storage Technology Co., Ltd |