CN202267053U - Solar energy cavity heat absorber capable of generating superheated steam - Google Patents
Solar energy cavity heat absorber capable of generating superheated steam Download PDFInfo
- Publication number
- CN202267053U CN202267053U CN 201120376214 CN201120376214U CN202267053U CN 202267053 U CN202267053 U CN 202267053U CN 201120376214 CN201120376214 CN 201120376214 CN 201120376214 U CN201120376214 U CN 201120376214U CN 202267053 U CN202267053 U CN 202267053U
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- water
- superheater
- cooling wall
- heat absorber
- superheated steam
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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
Abstract
The utility model discloses a solar energy cavity heat absorber capable of generating superheated steam. The solar energy cavity heat absorber comprises a water cooled wall, and superheaters; the water cooled wall is formed in the way that a cavity is defined by a plurality of diaphragm type wall tube screens, and is vertically arranged; the superheaters are positioned on the inner side of the water cooled wall; the tube screens of the superheaters are horizontally arranged; H-shaped water cooling connection pieces which are used for limiting and fixing the superheaters are arranged on the inner side of the water cooled wall; and each H-shaped water cooling connection piece consists of a first vertical tube section, a horizontal tube section and a second vertical tube section. The cavity heat absorber solves the problems about transient heat matching of the water cooled wall and the superheaters under the superheat parameters, and the thermal stress of superheater tubes, so that the parameters of the superheaters can be adopted by the heat absorber, and efficiency of a power station is improved.
Description
Technical field
The utility model relates to a kind of heat dump, relates in particular to a kind of solar cavity type heat absorber that produces superheated steam.
Background technology
Tower-type solar thermal power generating system requires steam parameter to remain in the scope of steam turbine permission; Heat dump is made up of three parts usually: preheating section, evaporator section and superheat section; In order to keep superheater to export relative stationary temperature, the caloric receptivity ratio of superheat section and evaporator section should mate well.Though with the same water of boiler of conventional fossil fuel as heat transport medium, the working environment of solar heat absorber is but different fully, solar heat absorber all will stand the variation of 0～peak value every day; Also have transient changing influences such as cloud simultaneously, the sunny weather condition of the design consideration of heat dump heating surface is fixed, when having black clouds to pass through; Heliostat partly is blocked; Cause heat dump each several part caloric receptivity uneven, for example evaporation section is because caloric receptivity reduces, and the saturated vapor quantity not sufficient of generation is still born the superheater tube of high heat load with cooling; If run into this situation; Will cause vapor (steam) temperature too high, and superheater tube and the annex temperature difference thereof and thermal stress are excessive, produce fatigue rupture very soon and lost efficacy.
Some ways solved this problem below adopting before, but were cost with high pressure drop or poor efficiency all, and for example enlargement discharge makes it can bear very high thermic load, increases the size of heat dump and remove heliostat etc.; Perhaps water-cooling wall and superheater average level are arranged with the balance caloric receptivity, but this mode under uneven high heat load, water-cooling wall and superheater to hang layout very difficult; The heat dump that perhaps has directly only is heated to saturated vapor and does not produce superheated steam, but but greatly reduces generating efficiency.
The utility model content
The purpose of the utility model is: a kind of solar cavity type heat absorber that produces superheated steam is provided; Solving the technical problem of the flux matched and superheater tube thermal stress of the thermal transient of water-cooling wall and superheater under the thermal parameter, thereby can solve the problem that exists in the above-mentioned prior art effectively.
The purpose of the utility model is to realize through following technical proposals: a kind of solar cavity type heat absorber that produces superheated steam; Comprise water-cooling wall and superheater; Water-cooling wall is surrounded the cavity of band opening by several membrane wall tube panels; Water-cooling wall is that arranged vertical arranges that superheater is positioned at the water-cooling wall inboard, and the tube panel of superheater is arranged horizontally; The water-cooling wall inboard is provided with carries out spacing and fixing " H " type water-cooled connector to superheater, and said " H " type water-cooled connector is made up of the first vertical pipeline section, horizontal pipeline section and the second vertical pipeline section.
As a kind of preferred, said " H " type water-cooled connector belongs to water-cooling wall, and the inlet of the first vertical pipeline section and the second vertical pipeline section is same water-cooling wall inlet collection case, exports to be same water-cooling wall outlet collection case.
Preferred as further, the first vertical pipeline section of said " H " type water-cooled connector, horizontal pipeline section and the second vertical pipeline section are formed in one or are welded into " H " type.
Preferred as further, be provided with between superheater tube panel and " H " type water-cooled connector and install and the expansion clearance, being provided with between adjacent two pipes of superheater tube panel can vertical movable locating piece.
Preferred as further, the progression of said superheater is the 2-4 level, and adjacent two-stage superheater is provided with direct-contact desuperheater between the end, and the end of superheater passes near cavity hatch from water-cooling wall.
Preferred as further, the outlet of said water-cooling wall is connected with water-cooling wall outlet collection case, and water-cooling wall outlet collection case connects a water-cooling wall outlet connecting pipe; The water-cooling wall outlet connecting pipe connects a drum; Drum connects superheater inlet tube connector, and superheater inlet tube connector connects superheater inlet collection case, and superheater inlet collection case connects a superheater; Superheater connects a super-heater exit case, and super-heater exit case connects a superheater outlet connecting pipe.
Preferred as further, also comprise down-comer, said down-comer one side links to each other with drum, and opposite side links to each other with water-cooling wall inlet collection case, and circulating pump is set on the down-comer.
The operation principle of part-structure is following in the utility model:
1. solar cavity type heat absorber adopts the mode that vertically arranged water-cooling wall combines with the superheater of horizontal arrangement, and superheater is positioned at the water-cooling wall inboard, and superheater can see through illumination; Therefore; Illumination can be radiated on superheater and the water-cooling wall effectively simultaneously, thereby realizes that both can increase or reduce by the caloric receptivity when illumination changes in the same way, has solved like this because weather condition changes to cause water-cooling wall and superheater surface mismatch problem; Superheater passes near cavity hatch from water-cooling wall; If sectionalized superheater is provided with direct-contact desuperheater, thereby reduces heat absorption deviation small on each grade superheater between adjacent two-stage superheater end; Because the superheater horizontal arrangement, make between the pipe of each grade and the caloric receptivity between the superheater tube panel at different levels can both increase or reduce in the same way;
2. adopt vertically arranged water-cooling wall, water-cooling wall weight leans on water screen tube self to be delivered to the top;
3. the water screen tube of being told by same water-cooling wall inlet collection case and same water-cooling wall outlet collection case forms a H " type water-cooled connector, superheater places in the slit of " H " type water-cooled connector first vertical pipeline section and the second vertical pipeline section formation.Because energy-flux density is higher in the chamber; If therefore hanging of superheater adopts ordinary construction spare to be easy to high temperature failure; Therefore, this " H " type water-cooled connector can obtain good cooling owing to be that the water screen tube that same water-cooling wall inlet collection case and same water-cooling wall outlet collection case are told forms; Simultaneously that superheater is placed on it; Can play support, spacing and weight transmitting to superheater, solve the problem of hanging and cooling off of horizontal superheater under the high heat load, " H " type water-cooled number of connecting pieces is set according to the carrying demand of superheater;
4. the connection of " H " type water-cooled is only reserved very little installation and expansion clearance with superheater tube panel both sides; Tube panel bottommost pipe is positioned at the slit top of " H " type water-cooled connector; Position by locating piece between the every pipe, but unfixing, guarantee free wxpansion between the every superheater tube;
5. superheater passes chamber in the panelized-tube-wall section position near the cavity hatch place, thereby avoids receiving the direct projection of the high fluence density light at accent place, avoids the high temperature failure of superheater pipe.
Compared with prior art; The beneficial effect of the utility model: the solar cavity type heat absorber that the utility model produces superheated steam has solved the flux matched and superheater tube thermal stress issues of thermal transient of crossing water-cooling wall and superheater under the thermal parameter; Make heat dump can adopt the superheater parameter, improved efficiency of plant.
Description of drawings
Fig. 1 is the structural representation that the utility model produces the solar cavity type heat absorber of superheated steam;
Fig. 2 is the enlarged diagram of " H " type water-cooled connector and water-cooling wall and superheater structural relation;
Fig. 3 is the partial enlarged drawing of water-cooled connector among Fig. 1;
Fig. 4 is the positional structure sketch map of superheater tube panel and " H " type water-cooled connector.
Among the figure, water-cooling wall inlet collection case-1, water-cooling wall-2, water-cooling wall outlet collection case-3; Water-cooling wall outlet connecting pipe-4, drum-5, superheater inlet tube connector-6, superheater inlet collection case-7; Superheater-8, direct-contact desuperheater-9, super-heater exit case-10, superheater outlet connecting pipe-11; Down-comer-15, circulating pump-16, tube panel pass water-cooling wall position-18, " H " type water-cooled connector-20; Tube panel lower tube-21, the vertical pipeline section-201 of locating piece-22, the first, the second vertical pipeline section-202, horizontal pipeline section-203, gap-204.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.
Disclosed all characteristics in this specification, or the step in disclosed all methods or the process are except the speciality of mutual repulsion and/or the step; All can make up by any way; Only if special narration all can be replaced by other equivalences or the alternative features with similar purpose, promptly; Only if special narration, an embodiment in a series of equivalences of each characteristic or the similar characteristics.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, a kind of solar cavity type heat absorber that produces superheated steam comprises water-cooling wall 2, superheater 8, and water-cooling wall 2 is surrounded the cavity of band opening by several membrane wall tube panels.Said water-cooling wall 2 outlets connect water-cooling wall outlet collection case 3, and water-cooling wall outlet collection case 3 connects water-cooling wall outlet connecting pipe 4, and water-cooling wall outlet connecting pipe 4 connects drum 5; Drum 5 connects superheater inlet tube connector 6; Superheater inlet tube connector 6 connects superheater inlet collection case 7, and superheater inlet collection case 7 connects superheater 8, and superheater 8 connects super-heater exit case 10; Super-heater exit case 10 connects superheater outlet connecting pipe 11; Down-comer 15 1 sides link to each other with drum 5, and opposite side links to each other with water-cooling wall inlet collection case 1, on the said down-comer 15 circulating pump 16 can be set as required.Water-cooling wall 2 can adopt the mode of Natural Circulation or forced circulation, whether circulating pump 16 is set on the down-comer 15 preferably decides according to the design of concrete parameter.
Said water-cooling wall 2 arranges that for the film mode tube screen arranged vertical water-cooling wall 2 can determine whether that needs are divided into preheating section and evaporator section according to the inlet fluid properties, and the weight of water-cooling wall 2 leans on the water-cooling wall pipe self to be delivered to the top.
Superheater 8 horizontally arranges for tube panel, and superheater 8 leaves the expansion clearance between the inboard of water-cooling wall 2 and superheater 8 and water-cooling wall 2.Superheater can see through illumination; Therefore; Illumination can be radiated on superheater and the water-cooling wall effectively simultaneously; Thereby realize both when illumination changes, caloric receptivity can increase or reduce in the same way between water-cooling wall 2 and the superheater 8, has solved like this because weather condition changes to cause water-cooling wall and superheater surface mismatch problem.。The progression of said superheater 8 can be set to 1 grade or 2-4 level, and its actual progression is provided with according to concrete parameter requirement, if sectionalized superheater; Between adjacent two-stage superheater end, be provided with direct-contact desuperheater, thereby reduce heat absorption deviation small on each grade superheater, because the superheater horizontal arrangement; Make between the pipe of each grade and the caloric receptivity between the superheater tube panel at different levels can both increase or reduce in the same way; In the present embodiment, the progression of superheater is 2 grades, and the end of superheater 8 passes near cavity hatch from water-cooling wall 2; Promptly; As shown in fig. 1, superheater 8 passes water-cooling wall position 18 from tube panel and passes, and it is the gap locations that are positioned near between the adjacent two water-cooling wall pipes of cavity hatch place certain distance that said tube panel passes water-cooling wall position 18.It is the direct projection for fear of receiving accent place high fluence density light that superheater 8 does not pass from cavity hatch.Between these adjacent two superheaters 8 ends, be provided with direct-contact desuperheater 9, direct-contact desuperheater 9 is in order to regulate the heat absorption deviation of superheater.
The structure of " H " type water-cooled connector 20 is shown in accompanying drawing 2; Said " H " type water-cooled connector 20 is formed in one or is welded into " H " type; Promptly directly integral body is directly made " H " die forging spare, also can be welded into two vertical horizontal " H " shapes by the first vertical pipeline section-201, horizontal pipeline section-203 and the second vertical pipeline section-202.In the present embodiment, " H " type water-cooled connector 20 is by three sections welding fabrications.The inlet of the first vertical pipeline section 201 and the second vertical pipeline section 202 is same water-cooling wall inlet collection case 1; Outlet is same water-cooling wall outlet collection case 3, and superheater 8 places in the slit of " H " type water-cooled connector 20 first vertical pipeline sections 201 and second vertical pipeline section 202 formation.Be provided with gap 204 between superheater 8 and " H " type water-cooled connector 20; Gap 204 is " H " type water-cooled connector 20 and a very little installation of superheater 8 tube panel both sides reservation and the space of expansion; The tube panel lower tube 21 of superheater 8 is located immediately at the slit top that the first vertical pipeline section 201 in " H " type water-cooled connector 20 and the second vertical pipeline section 202 form; Be provided with activity orientation piece 22 between the adjacent two superheater pipes; Locating piece 22 plays the role of positioning, and can guarantee free wxpansion between the every superheater pipe.
Because energy-flux density is higher in the chamber; If therefore hanging of superheater adopts ordinary construction spare to be easy to high temperature failure; Therefore, this " H " type water-cooled connector can obtain good cooling owing to be that the water screen tube that same water-cooling wall inlet collection case and same water-cooling wall outlet collection case are told forms; Superheater is placed on it; Can play support, spacing and weight transmitting to superheater, solve the problem of hanging and cooling off of horizontal superheater under the high heat load, " H " type water-cooled number of connecting pieces is set according to the carrying demand of superheater.In the present embodiment, said superheater tube is lived by H type conduit saddle, and its top is also held with similar structures, to play the effect of better hanging.
The operation principle of part-structure is in the utility model:
1. the superheater 8 of the water-cooling wall of formation chamber and horizontal arrangement recepts the caloric when illumination changes increases in the same way or reduces; The caloric receptivity of superheaters at different levels also is to increase in the same way or reduce; Layout can be alleviated water-cooling wall and the matching problem of superheater surface when Changes in weather greatly like this, simultaneously the caloric receptivity deviation of the different inter-stages of superheater and also can reduce greatly with the temperature difference in the screen;
2. the weight of vertically arranged water-cooling wall self is passed to the erecting by overhang that is not heated by the water-cooling wall pipe;
3. the superheater of horizontal arrangement adopts " H " type water-cooled connector fix and spacing, " H " type water-cooled connector not only to superheater play spacing, hang the effect with weight transmitting, also solved the cooling problem of superheater erecting by overhang under the high heat load.
4. the weight of superheater 8 is delivered on the erecting by overhang of water-cooling wall by " H " type water-cooled connection 20.
The utility model heat dump has solved the thermal transient flux matched and superheater tube thermal stress issues of crossing water-cooling wall and superheater under the thermal parameter, makes heat dump can adopt the superheater parameter, has improved efficiency of plant.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (7)
1. solar cavity type heat absorber that produces superheated steam; Comprise water-cooling wall (2) and superheater (8); Water-cooling wall (2) is surrounded the cavity of band opening by several membrane wall tube panels; It is characterized in that: water-cooling wall (2) arranges that for arranged vertical superheater (8) is positioned at water-cooling wall (2) inboard, and the tube panel of superheater (8) is arranged horizontally; Water-cooling wall (2) inboard is provided with carries out spacing and fixing " H " type water-cooled connector (20) to superheater (8), and said " H " type water-cooled connector (20) is made up of the first vertical pipeline section (201), horizontal pipeline section (203) and the second vertical pipeline section (202).
2. the solar cavity type heat absorber of generation superheated steam as claimed in claim 1; It is characterized in that: said " H " type water-cooled connector (20) belongs to water-cooling wall (2); The inlet of the first vertical pipeline section (201) and the second vertical pipeline section (202) is same water-cooling wall inlet collection case (1), exports to be same water-cooling wall outlet collection case (3).
3. the solar cavity type heat absorber of generation superheated steam as claimed in claim 2 is characterized in that: the first vertical pipeline section (201) of said " H " type water-cooled connector (20), horizontal pipeline section (203) and the second vertical pipeline section (202) are formed in one or are welded into " H " type.
4. like the solar cavity type heat absorber of the described generation superheated steam of arbitrary claim in claim 1 or 3; It is characterized in that: be provided with between superheater (8) tube panel and " H " type water-cooled connector (20) and install and expansion clearance (204), being provided with between adjacent two pipes of superheater (8) tube panel can vertical movable locating piece (22).
5. the solar cavity type heat absorber of generation superheated steam as claimed in claim 4; It is characterized in that: the progression of said superheater (8) is the 2-4 level; Adjacent two-stage superheater (8) is provided with direct-contact desuperheater (9) between the end, and the end of superheater (8) passes near cavity hatch from water-cooling wall (2).
6. like the solar cavity type heat absorber of the described generation superheated steam of arbitrary claim in claim 1 or 5; It is characterized in that: the outlet of said water-cooling wall (2) is connected with water-cooling wall outlet collection case (3); Water-cooling wall outlet collection case (3) connects a water-cooling wall outlet connecting pipe (4); Water-cooling wall outlet connecting pipe (4) connects a drum (5); Drum (5) connects superheater inlet tube connector (6), and superheater inlet tube connector (6) connects superheater inlet collection case (7), and superheater inlet collection case (7) connects a superheater (8); Superheater (8) connects a super-heater exit case (10), and super-heater exit case (10) connects a superheater outlet connecting pipe (11).
7. the solar cavity type heat absorber of generation superheated steam as claimed in claim 6; It is characterized in that: also comprise down-comer (15); Said down-comer (15) one sides link to each other with drum (5); Opposite side links to each other with water-cooling wall inlet collection case (1), and circulating pump (16) is set on the down-comer (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120376214 CN202267053U (en) | 2011-09-28 | 2011-09-28 | Solar energy cavity heat absorber capable of generating superheated steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120376214 CN202267053U (en) | 2011-09-28 | 2011-09-28 | Solar energy cavity heat absorber capable of generating superheated steam |
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| Publication Number | Publication Date |
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| CN202267053U true CN202267053U (en) | 2012-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120376214 Withdrawn - After Issue CN202267053U (en) | 2011-09-28 | 2011-09-28 | Solar energy cavity heat absorber capable of generating superheated steam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345858A (en) * | 2011-09-28 | 2012-02-08 | 东方电气集团东方锅炉股份有限公司 | Solar cavity-type heat absorber capable of generating overheated steam |
| CN104482528A (en) * | 2014-12-19 | 2015-04-01 | 中国科学院电工研究所 | Solar thermal power generation natural circulating heat absorber with overheater starting protection function |
| CN104501425A (en) * | 2014-12-19 | 2015-04-08 | 中国科学院电工研究所 | Solar thermal power generation control circulating heat absorber with overheater start protecting function |
| CN106225263A (en) * | 2016-09-13 | 2016-12-14 | 深圳市爱能森科技有限公司 | A kind of coil pipe honeycomb cavate liquid working substance solar thermal collector |
-
2011
- 2011-09-28 CN CN 201120376214 patent/CN202267053U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345858A (en) * | 2011-09-28 | 2012-02-08 | 东方电气集团东方锅炉股份有限公司 | Solar cavity-type heat absorber capable of generating overheated steam |
| CN104482528A (en) * | 2014-12-19 | 2015-04-01 | 中国科学院电工研究所 | Solar thermal power generation natural circulating heat absorber with overheater starting protection function |
| CN104501425A (en) * | 2014-12-19 | 2015-04-08 | 中国科学院电工研究所 | Solar thermal power generation control circulating heat absorber with overheater start protecting function |
| CN104482528B (en) * | 2014-12-19 | 2016-07-06 | 中国科学院电工研究所 | Solar energy thermal-power-generating Natural Circulation heat extractor with superheater starting protection |
| CN106225263A (en) * | 2016-09-13 | 2016-12-14 | 深圳市爱能森科技有限公司 | A kind of coil pipe honeycomb cavate liquid working substance solar thermal collector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120606 Effective date of abandoning: 20130612 |
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| RGAV | Abandon patent right to avoid regrant |