CN103307927A - Solar synergistic device for cooling tower in thermal power plant - Google Patents
Solar synergistic device for cooling tower in thermal power plant Download PDFInfo
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- CN103307927A CN103307927A CN2013102717334A CN201310271733A CN103307927A CN 103307927 A CN103307927 A CN 103307927A CN 2013102717334 A CN2013102717334 A CN 2013102717334A CN 201310271733 A CN201310271733 A CN 201310271733A CN 103307927 A CN103307927 A CN 103307927A
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Abstract
The invention discloses a solar synergistic device for a cooling tower in a thermal power plant. A solar vortex synergistic device is configured on the basis of a conventional circulating cooling water system in the thermal power plant; the solar synergistic device comprises a synergistic water pump, a water conveying pipeline and multiple groups of vortex spraying nozzles arranged at the upper part of the cooling tower; high-pressure water mist sprayed by the vortex spraying nozzles in a controllable tangential angle way is utilized to form a tangential circular vortex for improving the ventilation efficiency and the working medium cooling efficiency of the cooling tower; meanwhile, the running efficiency of the cooling tower can be improved by the day-night and seasonal natural solar energy regulation characteristics so as to achieve a remarkable energy-saving effect.
Description
Technical field
The present invention relates to a kind of energy-saving solar device, particularly a kind of complementary type enhancing device that utilizes solar energy to improve thermal power plant's recirculating cooling water system efficiency and the working medium rate of recovery.
Background technology
In the primary energy structure of China, fossil fuel proportions such as coal reach more than 70%.Therefore, the thermal power plant ratio in the capacity of installed generator at home also surpasses 60%, and according to statistics, there is electric power more than 40% in the whole world from fossil fuels such as coals.Although the ratio of various regenerative resources such as wind energy, solar energy is progressively improving at present, in one quite long from now on period, the thermal power plant will be an important component part of global power industry.
The pay attention to day by day of the greenhouse effects problem that the carbon dioxide that the thermal power plant that uses fossil fuel is discharged along with national governments and the public causes, improving the efficient of generating set and reducing pollutant emission just becomes a vital problem of thermal power plant survival and development from now on.
The thermal power generation unit is a whole set of the complicated technical process that the chemical energy of fossil fuels such as coal is converted to electric energy through heat energy and mechanical energy.The efficient of its thermal power transfer and transmittance process only about 40% has the low temperature exhaust heat of 50-60% directly to be lost in air or the rivers,lakes and seas by the unit recirculating cooling water system approximately.Wherein, in the comparatively deficient area of cooling water source, the unit recirculating cooling water system adopts cooling tower more
[1] [2]Etc. the secondary cycle mode.And along with water head sites such as rivers and lakes being protected the harsh day by day of index, originally can design and adopt recirculated water directly also to have to use instead the design of cooling tower secondary cycle in the big capacity thermal power plant of discharging.Therefore, the efficient operation of cooling tower also just has more broad sense.
And in the extensive utilization of regenerative resources such as present solar energy and wind energy, one of maximum problem is exactly its uncertainty with environment, weather and time
[3]These regenerative resources directly insert the unstable generated energy that electrical network brings can cause tremendous influence to operation and the safety of whole electrical network, must adapt to direct networking and the scheduling problem of these generation of electricity by new energy units by costly intelligent grid transformation and upgrading.Because China exists a large amount of coal-fired stations, along with improving constantly of environmental protection index, the pressure of its operation cost also increases substantially thereupon.And along with the raising of unit initial conditions with adopt various operations to optimize measures; the space of further realizing energy-saving and emission-reduction on original therrmodynamic system basis also dwindles gradually; and will realize energy-conservation as the conventional thermal power plant of the introducing circulation systems such as solar energy of regenerative resource; not only for the thermal power plant energy-saving and emission-reduction provide a new road, also can realize the scale utilization of solar energy the most convenient and effectively.Therefore, the present patent application people had once proposed a kind of thermal power plant circulating cooling water solar energy saving control device, changed with the natural characteristic in season round the clock by utilizing solar energy, and the method by complementation realizes the energy-conservation of recirculated water induction system
[4]
List of references:
[1] Zhao Zhenguo. cooling tower [M]. Beijing: the Chinese Water Conservancy water power .1997. of publishing house
[2] Zhao Shunan. seawater cooling tower [M]. Beijing: the Chinese Water Conservancy water power .2007. of publishing house
[3] work such as Cui Rongqiang. parallel networking type solar photovoltaic electricity generation system [M]. Beijing: the .2007. of Chemical Industry Press
[4] a kind of thermal power plant's circulating cooling water solar energy saving control device [Z]. Chinese patent, 201010191387.5
Summary of the invention
In order further to improve the organic efficiency of cooling tower operational energy efficiency and working medium, the present invention proposes a kind of solar energy synergy device of cooling tower.Its technical scheme is specifically realized by following method and step:
Conventional thermal power plant's recirculating cooling water system comprises cooling tower 1, pond of cooling tower 2, turbine condenser 3, water circulating pump 4 and circulating water line, the present invention has then set up synergy water pump 5 and corresponding water distribution pipeline in thermal power plant's recirculating cooling water system, be used for cooling water is delivered to the many groups spray nozzle of volution 6 that is installed on cooling tower 1 top, every group of spray nozzle of volution 6 all has adjustable horizontal inclination alpha and circle of contact drift angle β, form a controlled vortex on cooling tower 1 top by inject high pressure water smoke, strengthen the through-current capability of cooling tower, but and in the accelerated tower water vapour condense to reclaim working medium; Synergy water pump 5 is powered by a device of solar generating 7, and is controlled by solar energy synergy control system 8 with spray nozzle of volution 6;
Wherein, spray nozzle of volution 6 can be designed to outer ring layout or center arrangement.When spray nozzle of volution 6 is arranged for the outer ring, organize the inwall that spray nozzle of volution 6 is arranged in cooling tower 1 at interval more, every group of spray nozzle of volution 6 can have a plurality of spouts, respectively to the cooling tower center with a circle of contact drift angle β inject high pressure water smoke, thereby form hydrocone type rising vortex;
Center arrangement then be many group spray nozzle of volution 6 with the different directions centralized arrangement in cooling tower 1 centre, every group of spray nozzle of volution 6 can have a plurality of spouts 9, with level inclination α by interior toward export-oriented cooling tower 1 inwall place inject high pressure water smoke, thereby form a fan-shaped controlled vortex.
Synergy water pump 5 can be designed to its water supply and be taken from pond of cooling tower 2 or take from independently cooling water water source, and namely synergy water pump 5 is form operation arranged side by side with water circulating pump 4; In addition, synergy water pump 5 also can be designed to be connected in water circulating pump 4 outlets, and namely synergy water pump 5 moves for being connected in series form with water circulating pump 4;
The running status that solar energy synergy control system 8 is used for regulating synergy water pump 5, spray nozzle of volution 6 and device of solar generating 7.Design has signaling interface to contact between itself and the monoblock scattered control system DCS, thereby can obtain the real time data that unit load, condenser vacuum, condensing water temperature, recirculated water advance return water temperature, atmospheric temperature by monoblock scattered control system DCS; Simultaneously, but solar energy synergy control system 8 is supply voltage, synergy water pump 5 tach signals, level inclination α and the circle of contact drift angle β position signalling of each spray nozzle of volution 6 of collection in worksite device of solar generating 7 also, after above-mentioned signal is handled via solar energy synergy control system 8, start and stop and the rotating speed control instruction of output synergy water pump 5 and the control signal of adjusting each spray nozzle of volution 6 level inclination α and circle of contact drift angle β; Simultaneously, solar energy synergy control system 8 also can be convenient at the Centralized Monitoring of central control room realization to whole circulation water system and enhancing device to above-mentioned each running status and the control signal of monoblock scattered control system DCS transmission.
The invention has the beneficial effects as follows on existing thermal power plant cooling tower recirculating cooling water system basis, adopted solar powered synergy cooling system as the energy saving optimizing means, the vortex that utilizes high-pressure water mist to form strengthens the through-current capability of cooling tower, but and in the accelerated tower water vapour condense to reclaim working medium.It can be used in combination with the water circulating pump of routine, can take full advantage of cooling tower and device of solar generating the exert oneself season of the two and synchronous characteristic round the clock, maximally utilise solar energy and finish the adjusting of cooling tower cooling and working medium recovery ability, for the cycle efficieny that improves traditional thermal power plant and effective application of solar energy provide a practical solution.
Description of drawings
Fig. 1 adopts cooling tower synergistic device schematic diagram of the present invention;
Fig. 2 adopts spray nozzle of volution operation principle schematic diagram of the present invention.
The specific embodiment
Come embodiments of the invention are elaborated below in conjunction with accompanying drawing 1～Fig. 2: present embodiment is being to implement under the prerequisite and provided concrete embodiment and system architecture with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
Since the Technological Economy evaluation stress the factor difference, the cooling tower in domestic thermal power plant is compared with external design, often through-current capability is less than normal.Though can reduce the station-service power consumption of water circulating pump etc. like this, reduce the initial outlay of whole cooling tower system, also the corresponding performance driving economy that reduces unit.Along with domestic attention to the energy saving for power plants consumption reduction, and continue to improve generating set and design the restriction that initial conditions also has been subjected to factors such as high temperature metallic material, improve the operational efficiency of recirculating cooling water system, the end difference that further improves the steam turbine power generation unit also just becomes a kind of important energy saving method.
The present invention has adopted solar energy synergy device to improve the operational efficiency of recirculated cooling water by adopting the mode of solar energy and the complementation of thermal power generation unit, and the station service power consumption rate of generating set does not rise counter falling.Owing to place the unit recirculating cooling water system can also take full advantage of cooling tower and device of solar generating exert oneself the two season and natural synchronous characteristic round the clock solar energy, have good self compensation and self regulating charactoristic.
Present embodiment namely is to set up cover synergy water pump 5 and a corresponding water distribution pipeline in thermal power plant's recirculating cooling water system of routine, be used for cooling water is delivered to the many groups spray nozzle of volution 6 that is installed on cooling tower 1 top, every group of spray nozzle of volution 6 all has adjustable horizontal inclination alpha and circle of contact drift angle β, form a controlled vortex on cooling tower 1 top by inject high pressure water smoke, strengthen the through-current capability of cooling tower, but and in the accelerated tower water vapour condense to reclaim working medium; Synergy water pump 5 is powered by a device of solar generating 7, and is controlled by solar energy synergy control system 8 with spray nozzle of volution 6.This embodiment not only can directly apply to the design of newly-built power plant, also can realize the technological transformation of old unit easily.Accompanying drawing 1 has provided the systematic schematic diagram of one embodiment of the invention.The cooling pond 2 of cooling tower 1 is taken from the water supply of synergy water pump 5, working media is transported to the many groups spray nozzle of volution 6 that is positioned over cooling tower 1 top by conveyance conduit.
The operation principle of spray nozzle of volution 6 is seen accompanying drawing 2.By the A-A sectional view of accompanying drawing 2 as can be seen, the inwall at cooling tower 1 evenly is provided with 8 groups of spray nozzle of volution 6 in the present embodiment, its spout all to cooling tower 1 center-biased a circle of contact drift angle β, be used to form horizontal circle of contact vortex.This drift angle can be adjusted by solar energy synergy control system 8 by position control.Simultaneously, B-B sectional view by accompanying drawing 2 it can also be seen that, every group of spray nozzle of volution 6 has 4 vortex spouts 9 to be used for inject high pressure water smoke, but the level inclination α that its placement angle is spray nozzle of volution 6 is the design attitude control device also, and by 8 controls of solar energy synergy control system, this level inclination α can make whole circle of contact vortex produce siphonage upwards, thus improve the through-current capability of cooling tower and accelerate steam in the tower condense to reclaim working medium.
Solar energy synergy control system 8 can comprise the duty of device of solar generating 7 according to the whole circulation cooling water system, immediately adjusts the operation of synergy water pump 5 and spray nozzle of volution 6.Can also cooperate the running status of the water circulating pump of unit scattered control system DCS to adjust.
According to the design of whole circulation cooling water system, present embodiment has also been taked a series of optimization measure, as disposed the battery energy storage device in device of solar generating 7, in order to further take full advantage of the service ability of solar energy and raising synergistic device.Simultaneously, synergy water pump 5 is except can directly fetching water from cooling pond 2, and fetch water separately in the circulating cooling make-up water loop that can also switch to unit, as the small pump of cooling pond 2.
Claims (5)
1. thermal power plant's cooling tower solar energy synergy device, wherein thermal power plant's recirculating cooling water system comprises cooling tower (1), pond of cooling tower (2), turbine condenser (3), water circulating pump (4) and circulating water line, it is characterized in that: in thermal power plant's recirculating cooling water system, set up synergy water pump (5) and corresponding water distribution pipeline, be used for cooling water is delivered to the many groups spray nozzle of volution (6) that is installed on cooling tower (1) top, every group of spray nozzle of volution (6) all has adjustable horizontal inclination alpha and circle of contact drift angle β, forms a controlled vortex on cooling tower (1) top by inject high pressure water smoke; Synergy water pump (5) is powered by a device of solar generating (7), and is controlled by solar energy synergy control system (8) with spray nozzle of volution (6).
2. a kind of thermal power plant as claimed in claim 1 cooling tower solar energy synergy device, it is characterized in that: described spray nozzle of volution (6) is arranged for the outer ring, namely many group spray nozzle of volution (6) are arranged in the inwall of cooling tower (1) at interval, every group of spray nozzle of volution (6) can have a plurality of spouts, respectively to the cooling tower center with a circle of contact drift angle β inject high pressure water smoke, thereby form controlled vortex.
3. a kind of thermal power plant as claimed in claim 1 cooling tower solar energy synergy device, it is characterized in that: arrange centered by the described spray nozzle of volution (6), namely many group spray nozzle of volution (6) with the different directions centralized arrangement in cooling tower (1) centre, every group of spray nozzle of volution (6) can have a plurality of spouts (9), with level inclination α by interior toward export-oriented cooling tower (1) inwall place inject high pressure water smoke, thereby form fan-shaped controlled vortex.
4. a kind of thermal power plant as claimed in claim 1 cooling tower solar energy synergy device, it is characterized in that: described synergy water pump (5) can be designed to its water supply and be taken from pond of cooling tower (2) or take from independently cooling water water source, and namely synergy water pump (5) is form operation arranged side by side with water circulating pump (4); In addition, synergy water pump (5) also can be designed to be connected in water circulating pump (4) outlet, and namely synergy water pump (5) moves for being connected in series form with water circulating pump (4).
5. a kind of thermal power plant as claimed in claim 1 cooling tower solar energy synergy device, it is characterized in that: design has signaling interface to contact between described solar energy synergy control system (8) and the monoblock scattered control system DCS, thereby can be advanced the real time data of return water temperature, atmospheric temperature by monoblock scattered control system DCS acquisition unit load, condenser vacuum, condensing water temperature, recirculated water; Simultaneously, solar energy synergy control system (8) but also level inclination α and the circle of contact drift angle β position signalling of the supply voltage of collection in worksite device of solar generating (7), synergy water pump (5) tach signal, each spray nozzle of volution (6), above-mentioned signal is exported start and stop and the rotating speed control instruction of synergy water pump (5) and is adjusted each spray nozzle of volution (6) level inclination α and the control signal of circle of contact drift angle β after handling via solar energy synergy control system (8); Simultaneously, solar energy synergy control system (8) also can be to above-mentioned each running status and the control signal of monoblock scattered control system DCS transmission.
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| CN2013102717334A CN103307927A (en) | 2013-07-01 | 2013-07-01 | Solar synergistic device for cooling tower in thermal power plant |
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| CN2013102717334A CN103307927A (en) | 2013-07-01 | 2013-07-01 | Solar synergistic device for cooling tower in thermal power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609728A (en) * | 2020-05-25 | 2020-09-01 | 江苏省同远节能科技有限公司 | Efficient heat exchange type cooling circulating water system and working method thereof |
Citations (7)
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| GB1144087A (en) * | 1966-10-19 | 1969-03-05 | Us Stoneware Inc | Distributor |
| US3533560A (en) * | 1968-02-12 | 1970-10-13 | Munters & Co Carl | Cooling tower spray nozzle |
| CN201104156Y (en) * | 2007-04-03 | 2008-08-20 | 北京全航信诺科技发展有限公司 | Injection rotary device |
| CN201548118U (en) * | 2009-10-19 | 2010-08-11 | 南京大洋冷却塔股份有限公司 | Wear-resistant rotary jet atomizing exhaustor for spray cooling tower |
| CN202255076U (en) * | 2011-09-29 | 2012-05-30 | 无锡永信能源科技有限公司 | Uniform water distributing device capable of realizing variable flow of reverse-flow cooling tower |
| CN101886884B (en) * | 2010-06-02 | 2012-06-27 | 上海迪吉特控制系统有限公司 | Circulating cooling water solar energy saving and controlling device for coal-based power plant |
| CN203518792U (en) * | 2013-07-01 | 2014-04-02 | 上海迪吉特控制系统有限公司 | Solar energy efficacy enhancement device of thermal power plant cooling tower |
-
2013
- 2013-07-01 CN CN2013102717334A patent/CN103307927A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1144087A (en) * | 1966-10-19 | 1969-03-05 | Us Stoneware Inc | Distributor |
| US3533560A (en) * | 1968-02-12 | 1970-10-13 | Munters & Co Carl | Cooling tower spray nozzle |
| CN201104156Y (en) * | 2007-04-03 | 2008-08-20 | 北京全航信诺科技发展有限公司 | Injection rotary device |
| CN201548118U (en) * | 2009-10-19 | 2010-08-11 | 南京大洋冷却塔股份有限公司 | Wear-resistant rotary jet atomizing exhaustor for spray cooling tower |
| CN101886884B (en) * | 2010-06-02 | 2012-06-27 | 上海迪吉特控制系统有限公司 | Circulating cooling water solar energy saving and controlling device for coal-based power plant |
| CN202255076U (en) * | 2011-09-29 | 2012-05-30 | 无锡永信能源科技有限公司 | Uniform water distributing device capable of realizing variable flow of reverse-flow cooling tower |
| CN203518792U (en) * | 2013-07-01 | 2014-04-02 | 上海迪吉特控制系统有限公司 | Solar energy efficacy enhancement device of thermal power plant cooling tower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609728A (en) * | 2020-05-25 | 2020-09-01 | 江苏省同远节能科技有限公司 | Efficient heat exchange type cooling circulating water system and working method thereof |
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Application publication date: 20130918 |