CN102758733B - Air channel device for chimney air draft equipment - Google Patents
Air channel device for chimney air draft equipment Download PDFInfo
- Publication number
- CN102758733B CN102758733B CN201210216839.XA CN201210216839A CN102758733B CN 102758733 B CN102758733 B CN 102758733B CN 201210216839 A CN201210216839 A CN 201210216839A CN 102758733 B CN102758733 B CN 102758733B
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- Prior art keywords
- chimney
- air
- horizontal segment
- solar chimney
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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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
-
- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a solar chimney generating plant having an air channel device. The air channel device is installed at an outlet on the top of the solar chimney. The air channel device comprises a level section and a contracting section and an expansion section, wherein the level section is levelly arranged at the outlet of the chimney and is capable of containing the output of the chimney inside; the contracting section and the expansion section are respectively communicated with both ends of the level section; the diameter of the level section is larger than that of the chimney outlet; the contracting section is used for increasing the airflow velocity of the air entered from outside and forming a wind pressure negative pressure zone in the level section region and playing suction effect for the chimney internal air; and the expansion section is used for reducing pressure variation of the air flowing out from the level section. With the solar chimney generating plant, the chimney effect can be enhanced through a simple structure; a new energy utilizing mode is provided to the solar chimney generating system especially; and the generating system can be ensured to continuously run, thus the generating efficiency is improved.
Description
Technical field
The invention belongs to solar power plant technical field, more specifically, relate to a kind of solar chimney power generating equipment possessing air-duct apparatus.
Background technique
High stack effect refers to that indoor air is along having the space of vertical bank to rising or declining, and causes air to add the phenomenon of strong convection.High stack effect is the hot pressing that formed of indoor/outdoor temperature-difference and the coefficient result of outside wind pressure, and thus the degree that circulates of the chimney height of intensity and the chimney class exhaust equipment of high stack effect, indoor and outdoor temperature gap and indoor outer air is relevant.High stack effect can be applicable to the technical fields such as ventilation, drying, dehydration, salt water desalination, also can be used for solar electrical energy generation.
For chimney class exhaust equipment, intensity due to its high stack effect is mainly subject to the impact of indoor/outdoor temperature-difference and indoor and outdoor pressure reduction, its draught capacity is not strong, ventilation effect is unstable, thus usually need in the prior art to increase supplementary equipment to strengthen the ability of chimney withdrawing air, such as increase Fan Equipment, to supply gas side by side body for power changes gas pressure with the mechanical energy of blower fan input, the problem that corresponding like this meeting causes complex structure, operating cost to increase.
Especially concerning solar chimney power generating equipment, solar chimney power generating equipment is primarily of thermal-arrest canopy, chimney and turbogenerator composition, and sun visible ray (short wave radiation) penetrates the transparent cover plate of thermal-arrest canopy, is absorbed by the recuperation layer in canopy; Recuperation layer absorbs energy and causes the rising of its temperature, carries out heat exchange, the air temperature in thermal-arrest canopy is raised with air in canopy, heated air rises and enters the chimney of thermal-arrest canopy central authorities, due to the effect of high stack effect, its rate of climb improves, thus promotes turbogenerator running.Current solar chimney power generation system defect is: its Power supply derives from the hot air that the solar radiation of thermal-arrest canopy internal cause is heated completely, Energy harvesting form is single, utilization ratio is not high, can not ensure the continuous running of generator especially at rainy weather well.
Summary of the invention
For defect and the technical need of prior art, the object of the present invention is to provide a kind of solar chimney power generating equipment possessing air-duct apparatus, it is by changing the air circulation situation near chimney breast, high stack effect can be strengthened with simple structure, and be particularly useful for, for solar chimney power generation system provides new Energy harvesting form, ensures that power generation system is moved continuously, improving generating efficiency.
According to the present invention, provide a kind of solar chimney power generating equipment, this solar chimney power generating equipment comprises thermal-arrest canopy, solar chimney and turbogenerator, absorbed by the recuperation layer in canopy and cause its temperature after wherein sun visible ray penetrates the transparent cover plate of thermal-arrest canopy and raise, carrying out heat exchange with air in canopy makes air temperature raise, heated air rises and enters the solar chimney of thermal-arrest canopy central authorities, because its rate of climb of effect of high stack effect improves, thus promote turbogenerator running, it is characterized in that:
Above-mentioned solar chimney power generating equipment is built in High aititude and the stable place of region wind direction, and be also provided with air-duct apparatus in the outlet port, top of solar chimney, this air-duct apparatus comprises the contraction section, horizontal segment and the diffuser that are connected successively, jointly form the tubular structure of hollow thus, wherein:
Described contraction section is the tapered tube configuration of both ends open, its smaller diameter end is connected with one end of described horizontal segment, its larger diameter end carrys out flow path direction opening towards wind, thus after outer gas stream enters contraction section, airspeed increases and forms blast negative pressure in the region of described horizontal segment, this negative pressure causes the heated air of solar chimney inside to rise to chimney top quickly, the corresponding effect playing enhancing high stack effect; Described horizontal segment is the straight tube structure of both ends open, it is horizontally set on solar chimney exit position place and comprises therein by chimney breast, and the diameter of this horizontal segment is greater than the diameter of described chimney breast, avoid horizontal segment to the adverse effect of chimney breast air draft thus; The tapered tube configuration of described diffuser equally in both ends open, its smaller diameter end is connected with other one end of described horizontal segment, and for playing to from described horizontal segment effluent air the effect slowing down pressure change; In this way, the generating capacity of above-mentioned solar chimney power generating equipment can be strengthened, improve the generating efficiency of solar chimney power generating equipment simultaneously.
According to above design, when outer gas stream enters into inside, air channel through contraction section, because region that air-flow flows through narrows gradually, airspeed will become increasing, blast negative pressuren zone is formed thus in horizontal segment region, this negative pressuren zone causes the air-flow of solar chimney inside to rise to chimney top quickly, solar chimney power generation system capacity usage ratio can be solved so not enough, generating efficiency is not high, and the technical problem that chimney ventilation effect is not strong, correspondingly, the utilization ratio of solar chimney power generation system energy can be improved, improve the wind outside environment of chimney, strengthen exhausting ability, and it is simple to possess structure, cost is low, the technique effect be easy to be extended and applied, thus solar chimney power generating equipment is particularly useful for.
According to another aspect of the present invention, provide a kind of air-duct apparatus for solar chimney power generating equipment, this air-duct apparatus comprises upper and lower two disc-type baffle plate and is in the multiple dividing plates arranged between two baffle plates and along disk radial direction, space uniform between baffle plate is separated into 4,6 or 8 the air-flow section that reduces gradually of width and be in these space central authorities and the horizontal segment be connected with air-flow section described in each respectively from outside to inside by described dividing plate, wherein:
Described horizontal segment is horizontally set on solar chimney exit position place and comprises therein by chimney breast, outer gas stream is after entering described air-flow section, because flowed through region narrows and flow faster, form blast negative pressure thus in described horizontal segment region and pumping action played to solar chimney internal gas, in addition with air-flow enter the opposite air-flow section of air-flow section and play to from described horizontal segment effluent air the effect slowing down pressure change.
By above design, due to the air-flow section that the incoming flow of each wind direction all can first shrink through when entering this air-duct apparatus, thus airspeed can be accelerated gradually and form blast negative pressuren zone in horizontal segment region, chimney internal gas flow is played to the effect of suction, therefore solar chimney Energy harvesting form can be increased, strengthen solar chimney generating capacity, and improve generating efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation comprising the tubulose air-duct apparatus of horizontal segment and contraction section according to a preferred embodiment of the invention;
Fig. 2 is the structural representation comprising the tubulose air-duct apparatus of contraction section, horizontal segment and diffuser according to a preferred embodiment of the invention;
Fig. 3 is the structure sectional view of the discoid air-duct apparatus according to another preferred embodiment of the present invention;
In all of the figs, identical reference character is used for representing identical element or structure, wherein:
1 chimney 2 chimney breast 3 shrinks air channel 4 contraction section 5 horizontal segment 6 diffuser 7 air-flow section 8 dividing plate
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 is the structural representation comprising the tubulose air-duct apparatus of horizontal segment and contraction section according to a preferred embodiment of the invention.As shown in fig. 1, such as, be in the higher and occasion that region wind direction is basicly stable of height above sea level, massif can be relied on to build chimney class exhaust equipment.At top chimney breast 2 place of this chimney 1, consider often there is the not strong practical problem of draught capacity, therefore in design of the present invention, at the chimney outlet 2 on chimney top, the air-duct apparatus being provided with specified structure solves this problem.The contraction section 4 that this air-duct apparatus comprises horizontal segment 5 and is attached thereto, forms the such as tubular structure of hollow thus jointly.The straight tube structure of horizontal segment 5 such as in both ends open, it is horizontally set on chimney breast position and is comprised therein by chimney breast 2.Contraction section 4 tapered tube configuration in both ends open, the smaller diameter end being in left side is as shown in fig. 1 connected with the right-hand member of horizontal segment 5, its be on the right side of larger diameter end carry out flow path direction opening towards wind.Like this when outer gas stream enters into inside, air channel via contraction section 4, according to unitary Isentropic flow steady motion rule in the duct, subsonic gases can accelerate gradually along flowing postive direction in collapsible tube 4, airspeed will become increasing thus, the pressure of gas will reduce thereupon gradually, and forms blast negative pressure in the region of horizontal segment 5, and this negative pressure causes the air-flow of chimney inside to rise to chimney top quickly, correspondingly, the effect strengthening high stack effect can be played.
In a preferred embodiment, the diameter of horizontal segment 5 can be set greater than the diameter of chimney breast 2.By this setting, the adverse effect of horizontal segment to chimney breast air draft can be effectively reduced.
But, in some cases, when may there is air-flow runout level section, there is the situation of violent pressure change, in order to avoid this unfavorable phenomenon, in a preferred embodiment, further can to adjust the air flue structure shown in Fig. 1 and perfect.Fig. 2 is the structural representation comprising the tubulose air-duct apparatus of contraction section, horizontal segment and diffuser according to a preferred embodiment of the invention.As shown in Figure 2, air-duct apparatus also comprises diffuser 6, and the tapered tube configuration of this diffuser 6 equally in both ends open, the smaller diameter end being positioned at right side is as shown in FIG. connected with the left end of horizontal segment 5.Thereby, it is possible to pressure change degree when slowing down air-flow runout level section region, prevent horizontal segment outlet port air flow pressure from suddenling change and have influence on the peak suction of horizontal segment air-flow, thus effectively reducing the adverse effect to strengthening high stack effect.
The invention allows for the air-duct apparatus that similar principles contemplates another not form.Fig. 3 is the structure sectional view of the discoid air-duct apparatus according to another preferred embodiment of the present invention.As shown in Figure 3, this air-duct apparatus entirety such as structure in the form of annular discs, comprises and is in two of upper and lower position respectively in discoidal baffle plate, and to be between these two disc-type baffle plate and the multiple dividing plates arranged along disk radial direction.These dividing plates make the space between lower pedal by even partition precedent as being 4,6 or 8 (being such as shown as 4 in Fig. 3) the air-flow section 7 that reduces gradually of width and be in these space central authorities and the horizontal segment 5 be connected with air-flow section as described in each respectively from outside to inside.Air-flow section 7 from outside to inside width reduces gradually and is connected with horizontal segment 5 respectively, the set-up mode of horizontal segment and position identical with Fig. 1 with Fig. 2, be arranged on chimney breast position and chimney breast 2 comprised therein.Outer gas stream is after entering air-flow section 7, because flowed through region narrows and flow faster, form blast negative pressure thus in horizontal segment 5 region and pumping action played to chimney internal gas, in addition with air-flow enter the opposite air-flow section of air-flow section (now it get up the effect similar with the diffuser shown in Fig. 2) effect slowing down pressure change played to the air-flow in horizontal segment 5 outlet port.
By above design, when any wind direction flow through disc-shaped structure air-duct apparatus time, capital is first through region that width shrinks gradually, air-flow is accelerated, then form blast negative pressure in the horizontal segment region of chimney breast position, reduce the gas pressure intensity of chimney breast position, thus pumping action is played to chimney internal gas, the air incoming flow of all directions can be utilized like this to strengthen the effect of chimney withdrawing air, thus substantially increase the Applicable scope according to air-duct apparatus of the present invention.In addition, the another one air-flow section opposite with the air-flow section that outer gas stream enters can play the effect of similar described diffuser, pressure change degree during outer gas stream runout level section region can be slowed down thus, effectively prevent air flow pressure from suddenling change and have influence on the peak suction of horizontal segment, the structure of this symmetric type makes each air-flow Duan Jieneng bear the function of contraction of gas section and gas diffuser simultaneously, therefore greatly facilitate as installed and use, and the effect under different application occasion can be ensured.
Solar chimney power generating equipment of the prior art forms primarily of thermal-arrest canopy, chimney and turbogenerator.Its roughly working principle be: sun visible ray penetrates the transparent cover plate of thermal-arrest canopy, absorbed by the recuperation layer in canopy and cause its temperature and raise, heat exchange is carried out with air in canopy, air temperature in thermal-arrest canopy is raised, heated air rises and enters the chimney of thermal-arrest canopy central authorities, due to the effect of high stack effect, its rate of climb improves, thus promotes turbogenerator running.For current solar chimney power generation system, major defect is that its working efficiency is subject to the restriction of high stack effect intensity, and its Power supply completely only derives from the hot air that the solar radiation of thermal-arrest canopy internal cause heats, Energy harvesting form is single, utilization ratio is not high.For this reason, the present invention proposes the air-duct apparatus conceived above to apply to solar chimney power generating equipment especially, is specifically installed on its chimney top and brings out a mouthful position.By installing according to the various forms of air-duct apparatus of the present invention for solar chimney generating is arranged, because the incoming flow of each wind direction all can first through the air-flow section of contraction when entering this air-duct apparatus, thus airspeed can be accelerated gradually and form blast negative pressuren zone in horizontal segment region, chimney internal gas flow is played to the effect of suction.Facts have proved, solar chimney Energy harvesting form can be increased largely, strengthen solar chimney generating capacity, and improve the generating efficiency of solar power plant.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a solar chimney power generating equipment, this solar chimney power generating equipment comprises thermal-arrest canopy, solar chimney and turbogenerator, absorbed by the recuperation layer in canopy and cause its temperature after wherein sun visible ray penetrates the transparent cover plate of thermal-arrest canopy and raise, carrying out heat exchange with air in canopy makes air temperature raise, heated air rises and enters the solar chimney of thermal-arrest canopy central authorities, because its rate of climb of effect of high stack effect improves, thus promote turbogenerator running, it is characterized in that:
Above-mentioned solar chimney power generating equipment is built in High aititude and the stable place of region wind direction, and rely on massif to build, and be also provided with air-duct apparatus in the outlet port, top of solar chimney, this air-duct apparatus comprises the contraction section be connected successively, horizontal segment and diffuser, jointly form the tubular structure of hollow thus, wherein: described contraction section is the tapered tube configuration of both ends open, its smaller diameter end is connected with one end of described horizontal segment, its larger diameter end carrys out flow path direction opening towards wind, thus after outer gas stream enters contraction section, airspeed increases and forms blast negative pressure in the region of described horizontal segment, this negative pressure causes the heated air of solar chimney inside to rise to chimney top quickly, the corresponding effect playing enhancing high stack effect, described horizontal segment is the straight tube structure of both ends open, it is horizontally set on solar chimney exit position place and comprises therein by chimney breast, and the diameter of this horizontal segment is greater than the diameter of described chimney breast, avoid horizontal segment to the adverse effect of chimney breast air draft thus, the tapered tube configuration of described diffuser equally in both ends open, its smaller diameter end is connected with other one end of described horizontal segment, and for playing to from described horizontal segment effluent air the effect slowing down pressure change, have influence on the peak suction of this horizontal segment air-flow to prevent the air flow pressure sudden change of horizontal segment outlet port, in this way, the generating capacity of above-mentioned solar chimney power generating equipment can be strengthened, improve the generating efficiency of solar chimney power generating equipment simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216839.XA CN102758733B (en) | 2012-06-28 | 2012-06-28 | Air channel device for chimney air draft equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216839.XA CN102758733B (en) | 2012-06-28 | 2012-06-28 | Air channel device for chimney air draft equipment |
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| Publication Number | Publication Date |
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| CN102758733A CN102758733A (en) | 2012-10-31 |
| CN102758733B true CN102758733B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210216839.XA Expired - Fee Related CN102758733B (en) | 2012-06-28 | 2012-06-28 | Air channel device for chimney air draft equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104409782A (en) * | 2014-10-23 | 2015-03-11 | 山东瑞宇蓄电池有限公司 | Storage battery formation device and hydrogen and oxygen mixture guided-discharge device |
| CN107420254A (en) * | 2017-09-07 | 2017-12-01 | 新昌县三新空调风机有限公司 | A kind of heavy duty detergent wind-driven generator |
| CN109826747B (en) * | 2019-03-29 | 2020-11-20 | 国网山东省电力公司梁山县供电公司 | Wind generating set, fixing system and method |
| CN110469860A (en) * | 2019-08-10 | 2019-11-19 | 亿利洁能科技（颍上）有限公司 | A kind of Boiler Cinder Surveying collection device |
| CN112097360B (en) * | 2020-09-22 | 2022-05-03 | 铜陵学院 | Building energy-saving ventilation equipment |
| DE102021110434A1 (en) | 2021-04-23 | 2022-10-27 | TenneT TSO GmbH | Device for ventilating a room through a suction pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3302552A (en) * | 1965-03-17 | 1967-02-07 | Gulf Research Development Co | Venting apparatus including venturi means |
| DE2218514A1 (en) * | 1971-04-28 | 1972-11-02 | Kostner, Herbert, Bruneck, Bozen (Italien) | Extractor hood for chimneys |
| CN202690324U (en) * | 2012-06-28 | 2013-01-23 | 华中科技大学 | Air flue device for chimney ventilation device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587690A (en) * | 2004-09-02 | 2005-03-02 | 西安交通大学 | Building method for solar energy chimney generator |
| US20110204632A1 (en) * | 2010-02-25 | 2011-08-25 | Skala James A | Synchronous Induced Wind Power Generation System |
-
2012
- 2012-06-28 CN CN201210216839.XA patent/CN102758733B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3302552A (en) * | 1965-03-17 | 1967-02-07 | Gulf Research Development Co | Venting apparatus including venturi means |
| DE2218514A1 (en) * | 1971-04-28 | 1972-11-02 | Kostner, Herbert, Bruneck, Bozen (Italien) | Extractor hood for chimneys |
| CN202690324U (en) * | 2012-06-28 | 2013-01-23 | 华中科技大学 | Air flue device for chimney ventilation device |
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| CN102758733A (en) | 2012-10-31 |
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