CN104101112A - Solar heat collection receiver - Google Patents
Solar heat collection receiver Download PDFInfo
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- CN104101112A CN104101112A CN201410331760.0A CN201410331760A CN104101112A CN 104101112 A CN104101112 A CN 104101112A CN 201410331760 A CN201410331760 A CN 201410331760A CN 104101112 A CN104101112 A CN 104101112A
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- heating surface
- section
- evaporator section
- header
- heating
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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
- Y02E10/44—Heat exchange systems
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a solar heat collection receiver of a segmented structure. The solar heat collection receiver comprises a lower evaporation segment and an upper superheating segment, the evaporation segment and the superheating segment are connected through a steam drum, and the evaporation segment comprises an evaporation segment inlet header, an evaporating heating surface, an evaporation segment heating surface outlet tube, a descending tube, a circulating pump and heating surface inlet and outlet headers. A heat exchange medium enters the evaporation segment inlet header from the steam drum through the descending tube and the circulating pump, the heat transferring medium is uniformly distributed to the evaporation section heating surface through the headers to complete the process of energy exchange, the heat exchange medium is connected to the steam drum through the evaporation segment heating surface outlet tube, and the evaporating segment heating surface is a spiral water wall tube in structure and cylindrical in appearance.
Description
Technical field
The present invention relates to a kind of solar energy heating receiver, relate in particular to a kind of tower type solar thermal-arrest water-steam receiver, is application of solar.
Background technology
Solar energy thermal-power-generating is that a kind of conversion process by " light-Re-electricity " realizes the generation technology that clean energy resource utilizes.Conversion at heat is similar with traditional fossil-fuelled power plant in principle, is only that the source of the energy is different.Solar energy thermal-power-generating is that the sunshine of clean low energy densities is converted into high density energy by heliostat, with the form of thermodynamic cycle, heat energy is converted into electric energy.Solar energy thermal-power-generating technology can be divided into according to the form of receiver: slot type, tower and butterfly.Wherein, the commercialization of trough type solar power generation technology, tower and butterfly is still in demonstration phase.Solar energy thermal-power-generating is subject to the impact of weather, has obvious intermittence and unstability, and the design of solar energy system is brought to very large challenge.
In solar heat power generation system, solar receiver is the critical component of realizing solar energy thermal-power-generating, and the solar energy that it catches heliostat, reflect, focus on is converted into the high temperature energy that can efficiently utilize, for generating set provides power source.The medium that solar receiver is used comprises two kinds, fused salt and water.
In different Space Angle, the received solar energy otherness of receiver is larger.Light field focuses on towards the luminous energy density on sun side heating surface and is significantly less than downsun receiver heating surface.On heating surface, Energy distribution is inhomogeneous, easily causes heat transfer intensity different, then produces the inequality of assignment of traffic.When serious, there will be Temperature Deviation between the local overtemperature of tube wall of heating surface and pipe to strengthen, affect the safe operation of equipment.
Summary of the invention
The object of the invention is the large problem of Temperature Deviation between the local overtemperature of tube wall that produces for luminous energy density skewness on solar energy heating receiver boundary condition and pipe, a kind of hypomere evaporator section is provided, epimere superheat section, the solar energy absorption plant of the middle segmental structure being connected by drum.
In order to achieve the above object, technical scheme of the present invention is:
A kind of solar energy heating receiver, adopt segmental structure, comprise hypomere evaporator section and epimere superheat section, evaporator section is connected by drum with superheat section, it is characterized in that: described evaporator section comprises evaporator section entrance header, evaporating heating surface, evaporator section heating surface fairlead, down-comer, the header that circulating pump and a heating surface are imported and exported, heat transferring medium enters into evaporator section entrance header by drum by down-comer and circulating pump, by header, heat transferring medium uniform distribution is sent into evaporator section heating surface, complete the exchange process of energy, by evaporator section heating surface fairlead, be connected to drum, described evaporator section heated face structure is helical water-cooled wall pipe, profile is cylinder.Described superheat section is positioned at the top of evaporator section, both arrange at coaxial equal diameter, described superheat section heating surface is divided into three groups of (A according to heat transfer process, B, C), every group comprises a plurality of heating surfaces, every group of heating surface comprises superheat section entrance header, inlet header, superheat section heating surface, outlet header, superheat section outlet header, medium passes through above-mentioned parts successively, front two groups (A, B) distributing along diameter symmetry at heating surface, after media for heat exchange, enter into the 3rd group of (C) heating surface and carry out exchange heat, after by outlet header, be mixed into next technical process.
For solving due to the luminous energy density underload that reduction causes suddenly of the reason appearance such as weather or the acute variation of load, at evaporator section, circulating pump is set, be connected with down-comer.When there is above-mentioned situation, use circulating pump adjustment by circulation line, to enter again the quantity of circulating water of evaporating heating surface circulation, circulating ratio, adapts to the variation of load.So just can solve load during acute variation, because the variation of Transfer Boundary Condition causes the problem of tube wall temperature acute variation.
Preferably, the heating surface of superheat section adopts straight tube, and form is light pipe, and tube pitch is less, and the thermal expansion value that the size in gap calculates according to maximum load is set;
Preferably, the profile of superheat section is circle or polygon, and described polygonal limit number is even number and is more than or equal to 6;
Preferably, it is relation in parallel that front two groups of (A, the B) heating surfaces of described superheat section close, and every group (for example A group) is at least divided into four (A
1, A
2..., A
2n, n>1), A
2kand A
2k+1heating surface is relation in parallel, A
2kand A
2 (k+1)for series relationship, 0<k<=n wherein.The 3rd group of (C) heating surface at least comprise two heating surfaces (C1 ..., C
2n, n>1)), C
2kand C
2k+1heating surface is relation in parallel, C
2kand C
2 (k-1)for series relationship, 0<k<=n wherein.；
Preferably, the import and export of every heating surface of superheat section are equipped with header, between the header that is related to heating surface in parallel, equalizing main are set;
Preferably, the circumferential direction that is arranged in of superheat section heating surface (A, B) is arranged symmetrically with, for example, and A
2kand A
2k+1and A
2kand A
2k+1symmetrical in circumferential direction;
Preferably, the helical water-cooled wall of bottom evaporator section is chosen fin panel casing, and the pipeloop number of all pipelines of water-cooling wall is greater than 1 circle;
Preferably, the circulating ratio value of the circulating pump of evaporator section is between 1.2～4;
Preferably, the helical water-cooled wall of bottom evaporator section adopts riffled tube, improves critical steam content corresponding under maximum load, prevents film boiling;
Preferably, the helical water-cooled wall of bottom evaporator section adopts the mode of hanging to install fixing;
Preferably, the heating surface surface of receiver scribbles the coating that exchange capability of heat is stronger, with enhanced heat exchange;
Preferably, the coaxial equal diameter layout of evaporator section and superheat section, the heating surface between two sections closely connects, and gap is the distance of reserved expanded by heating only;
Preferably, the installation site of drum is in the middle of evaporator section and superheat section, and the center of drum is on the central axis of evaporator section;
Preferably, all headers are arranged in the heating surface inside of receiver, and are uniformly distributed along circumferential direction;
Evaporator section of the present invention adopts the large form of helical water-cooled wall, there is with azimuthal variation the problem that large Energy distribution is inhomogeneous in time in the light energy that can effectively solve incident, the deviation of temperature and wall temperature between the water screen tube of reduction high heat load area, strengthening receiver is answered stability and safety service ability.The use of closed circuit and riffled tube improves critical steam content corresponding under maximum load, reduces the risk that film boiling occurs.It is fixing that evaporator section and superheat section adopt respectively the mode of hanging and fixed support to install, downward, upwards free wxpansion respectively while being heated, and this simple and reliable for structure, the displacement of equipment is little.
Accompanying drawing explanation
Fig. 1 is that solar receiver version is arranged schematic diagram.
Fig. 2 is solar receiver version connection diagram.
Fig. 3 is solar receiver superheat section heating surface cross section schematic top plan view.
The specific embodiment
For the present invention is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Following examples 1 a kind of solar energy heating receiver as shown in Figure 1, comprises evaporator section 1, superheat section 2 and drum 3.Evaporator section 1 adopts and is with female spiral coil, spiral coil is fin panel casing.It is fixing that evaporator section adopts the mode of hanging to install, after being heated, and the downward free wxpansion of evaporator section.Superheat section 2 is arranged on the top of evaporator section 1, adopt the form of straight tube, light pipe, heating surface is divided into three groups of (A, B, C), every group comprises superheat section entrance header 4, inlet header 5, superheat section heating surface 6, superheat section fairlead 7, outlet header 15, superheat section outlet header 8, medium passes through above-mentioned parts successively, front two groups of (A, B) the distributing along diameter symmetry of heating surface, after media for heat exchange, enter into the 3rd group of (C) heating surface and carry out exchange heat, after by superheat section outlet header 8, be mixed into next technical process.It is fixing that superheat section adopts the mode supporting to install, the backward upper free wxpansion of being heated.
Wherein, in conjunction with Fig. 2, heat transferring medium in evaporator section is entered by evaporator section entrance header 9, by evaporating heating surface 10, carry out heat exchange, by evaporator section heating surface fairlead 12 and evaporator section outlet header 11, enter into drum 3, complete the process of carbonated drink separation in drum, gaseous state heat transferring medium enters into superheat section, liquid heat transferring medium is connected to evaporator section entrance header 9 by down-comer 13, completes heat transferring medium in the cyclic process of evaporator section.Adjust the circulating ratio of circulating pump 14 to adapt to the variation of load.The heating surface of superheat section is divided into A, B, and tri-groups of C, the heat transferring medium in every group is successively by heating surface entrance header 4, inlet header 5, superheat section heating surface 6, superheat section fairlead 7, outlet header 15, superheat section outlet header 8.A and B heating surface are relation in parallel, heating surface A1 in A group and A2 are in parallel, A3 and A4 are in parallel, and A1A2 and A3A4 are series relationship, according to the quantity of the demand actual arrangement heating surface of thermic load, the heating surface of A group and B group is even number, to facilitate being arranged symmetrically with of heating surface, after A group and the heat exchange of B group, after mixing, header enters C group, and the heating surface C1 in C group and C2 are in parallel, C3 and C4 are in parallel, and C1C2 and C3C4 are series relationship.
Fig. 3 is the cross section schematic top plan view of receiver superheat section, and signal heating surface A, B, C tri-heating surfaces are at the distribution relation making progress in week.The profile of evaporator section (1) and superheat section (2) heating surface is circle or polygon, and described polygonal limit number is even number, and is more than or equal to 6.A1 and B1 are symmetrical about heating surface cross-sectional diameter, and A2 and B2 are symmetrical, and A3 and B3 are symmetrical, and A4 and B4 are symmetrical, and C1 and C2 are symmetrical; Generally speaking, front two groups of heating surfaces (A, B) are along the symmetrical distribution of heating surface cross-sectional diameter.
Embodiment 1
| Title | Unit | Numerical value |
| Rated load | MW | 130 |
| Superheat steam flow | kg/s | 140 |
| Superheated steam pressure | atm | 150 |
| Superheat steam temperature | ℃ | 570 |
| Feed temperature | ℃ | 260 |
| Drum pressure | atm | 175 |
| Circulating ratio | ? | 2.0 |
| Evaporator section heating surface area | m2 | 673 |
| Overheated short heating surface area | m2 | 540 |
| Evaporator section height | m | 11 |
| Evaporator section diameter | m | 19.5 |
| Superheat section height | m | 9 |
| Superheat section A group | Sheet | 8 |
| Superheat section B group | Sheet | 8 |
| Superheat section C group | Sheet | 4 |
Claims (8)
1. a solar energy heating receiver, adopt segmental structure, comprise hypomere evaporator section (1) and epimere superheat section (2), evaporator section (1) is connected by drum (3) with superheat section (2), it is characterized in that: described evaporator section comprises evaporator section entrance header (9), evaporating heating surface (10), evaporator section heating surface fairlead (12), down-comer (13), circulating pump (14) and each heating surface enter, the header (5 of outlet, 15), heat transferring medium enters into evaporator section entrance header (9) by drum by down-comer (13) and circulating pump (14), by header (9), heat transferring medium uniform distribution is sent into evaporator section heating surface (10), complete the exchange process of energy, by evaporator section heating surface fairlead (12), be connected to drum (3), described evaporator section heating surface (10) structure is helical water-cooled wall pipe, profile is cylinder, described superheat section (2) is positioned at the top of evaporator section (1), both arrange at coaxial equal diameter, described superheat section heating surface (2) is divided into three groups of heating surface (A according to heat transfer process, B, C), every group comprises a plurality of heating surfaces, every group of heating surface comprises superheat section entrance header (4), inlet header (5), superheat section heating surface (6), outlet header (15), superheat section outlet header (8), medium passes through above-mentioned parts successively, front two groups of heating surface (A, B) along the symmetrical distribution of heating surface cross-sectional diameter, after media for heat exchange, enter into the 3rd group of heating surface (C) and carry out exchange heat, after by superheat section outlet header (8), be mixed into next technical process.
2. a kind of solar energy heating receiver as claimed in claim 1, is characterized in that: the circulating ratio of the circulating pump (14) that evaporator section (1) arranges is between 1.2 ~ 4.
3. a kind of solar energy heating receiver as claimed in claim 1, is characterized in that: the helical water-cooled wall of bottom evaporator section (1) is chosen fin panel casing, and the pipeloop number of all pipelines of water-cooling wall is greater than 1 circle.
4. a kind of solar energy heating receiver as claimed in claim 1, is characterized in that: the helical water-cooled wall of bottom evaporator section (1) is chosen light pipe, and the pipeloop number of all pipelines of water-cooling wall is greater than 1 circle.
5. a kind of solar energy heating receiver as claimed in claim 1, is characterized in that: the helical water-cooled wall of bottom evaporator section (1) adopts riffled tube, improves critical steam content corresponding under maximum load; It is fixing that top superheat section (2) adopts the mode of hanging to install, free wxpansion downwards, and top superheat section adopts the method for fixed support, upwards free wxpansion.
6. a kind of solar energy heating receiver as claimed in claim 1, is characterized in that: the profile of evaporator section (1) and superheat section (2) heating surface is circle or polygon, and described polygonal limit number is even number, and is more than or equal to 6; The coaxial equal diameter layout of heating surface of evaporator section (1) and superheat section (2), the heating surface between two sections (6,10) closely connects, and gap is the distance of reserved expanded by heating only.
7. a kind of solar energy heating receiver as claimed in claim 1, is characterized in that: the connecting line of all headers (4,8,9,11) and header (5,15) and heating surface (6,10) is arranged in the space that heating surface surrounds.
8. a kind of solar energy heating receiver as claimed in claim 1, is characterized in that: the import and export of every heating surface of superheat section are equipped with header, between the header that is related to heating surface in parallel, equalizing main is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331760.0A CN104101112B (en) | 2014-07-11 | 2014-07-11 | A kind of solar energy heating receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331760.0A CN104101112B (en) | 2014-07-11 | 2014-07-11 | A kind of solar energy heating receiver |
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| Publication Number | Publication Date |
|---|---|
| CN104101112A true CN104101112A (en) | 2014-10-15 |
| CN104101112B CN104101112B (en) | 2015-11-18 |
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ID=51669485
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410331760.0A Active CN104101112B (en) | 2014-07-11 | 2014-07-11 | A kind of solar energy heating receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104101112B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440458A (en) * | 2019-08-01 | 2019-11-12 | 浙江中控太阳能技术有限公司 | A kind of heat dump tube panel component for tower type solar energy thermal power generation |
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2014
- 2014-07-11 CN CN201410331760.0A patent/CN104101112B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2724638A1 (en) * | 1977-06-01 | 1978-12-07 | Jasz Freit Artur | Energy converter for powering steam and gas turbine plant - has air preheating, insulating ducts around furnace, and internal superheater drum |
| JPS60138358A (en) * | 1983-12-26 | 1985-07-23 | Matsushita Electric Ind Co Ltd | Solar heat utilizing hot water supplier |
| CN1215818A (en) * | 1997-10-08 | 1999-05-05 | 东芝株式会社 | Exhaust heat recovery boiler |
| KR100985591B1 (en) * | 2008-09-19 | 2010-10-05 | 한국에너지기술연구원 | natural circulation type solar receiver for solar power generation |
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| CN103017366A (en) * | 2012-12-13 | 2013-04-03 | 东南大学 | Partitioned solar high-temperature heat pipe central receiver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110440458A (en) * | 2019-08-01 | 2019-11-12 | 浙江中控太阳能技术有限公司 | A kind of heat dump tube panel component for tower type solar energy thermal power generation |
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| Publication number | Publication date |
|---|---|
| CN104101112B (en) | 2015-11-18 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ge Xueli Inventor after: Wu Xiaojiang Inventor after: Zhang Jianwen Inventor after: Yan Kai Inventor after: Li Yuehua Inventor after: Zhang Xiang Inventor before: Ge Xueli |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GE XUELI TO: GE XUELI WU XIAOJIANG ZHANG JIANWEN YAN KAI LI YUEHUA ZHANG XIANG |
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