CN102980417B - Tower type direct air cooled condenser and tower type direct dry cooling system thereof - Google Patents
Tower type direct air cooled condenser and tower type direct dry cooling system thereof Download PDFInfo
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- CN102980417B CN102980417B CN201210513332.0A CN201210513332A CN102980417B CN 102980417 B CN102980417 B CN 102980417B CN 201210513332 A CN201210513332 A CN 201210513332A CN 102980417 B CN102980417 B CN 102980417B
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Abstract
The invention discloses a tower type direct air cooled condenser and a tower type direct dry cooling system thereof. The tower type direct dry cooling system comprises a tower type direct air cooled condenser, wherein the tower type direct air cooled condenser is arranged on the lower part of a reinforced concrete dual-curve cooling tower; a plurality of condensing units are arranged annularly; steam distribution vertical pipes of the condensing units are connected with a volute-shaped steam distribution main pipe; gas collecting pipes of the condensing units are connected with a vacuum pumping pipeline; a cross-shaped wind insulating plate is arranged inside the reinforced concrete dual-curve cooling tower; a reinforced concrete sloping plate is arranged on a cooling tower annular beam above the tower type direct dry cooled condenser; both sides of collecting pipes are provided with two hooks respectively; a glass fiber reinforced plastic wind blocking plate is movably arranged between two collecting pipes through the hooks; and triangular oblique cover plates are arranged on two rows of pipe bundles of adjacent condensing units. The tower type direct dry cooling system has the advantages of simple structure, running flexibility, low initial investment, small quantity of heat exchange times and high efficiency, the energy consumption and noise of an ACC (Air Cooled Condenser) system fan are eliminated, and the sensitivity to the wind direction is lowered.
Description
Technical field
The invention belongs to the cooling technical field that makes exhaust steam become condensate water of fire (core) exhaust steam of electric power plant dry type, particularly a kind of tower direct air cooled condenser and tower direct dry cooling-system thereof.
Background technology
The every generating a kilowatt energy of thermal power generation, adopts dry type cooling (being commonly called as air cooling), than the water that adopts the cooling saving of wet type 2.5kg.Classical dry cooling systems is between mixed in following table, between table and direct-cooled three kinds of systems.Derive again remaining six kinds of cooling system in following table by three kinds of systems of classics.
It is dry cooling system that developed country has all renamed as air cooling system, at present, the not yet cooling term of specification dry type of China, ambiguity is more, preciseness deficiency.Cooling for power station, heat exchanger, radiator, condenser and clammy, dry cooling-system can be defined as follows:
The cooling significant water-saving result of dry type must cause increasing of the large and operating cost of the change of system investment.The little defect of existing dry cooling systems and the deficiency of suitability, force people to change thinking, and the advantage of integrated various cooling systems is used for reference mutually.
Over more than 50 year, the whole world is equipped with the cooling power plant unit capacity of dry type and has reached 200,000,000 kilowatts.China's (being mainly over nearly 10 years) is built and at the cold-dry type generating set of building, and installed capacity also exceedes 100,000,000 kilowatts, and single-machine capacity differs in size from 2MW to 1000MW, has over thousands of cover dry cooling systems.The cooling generating of dry type of " changing water with coal ", coal consumption is than the large-scale unit of clammy high 5%() to the little unit of 10%().The cooling generating of China's dry type, economizes on water approximately 1,000,000,000 tons every year, needs 7,000,000 tons, many consumption mark coals.Along with constantly riseing of coal price, power plant faces to economize on water also wants energy-conservation awkward situation, is badly in need of the new dry type cooling technology of research and development.In following 20 years, key technology and equipment at least also, by building the cooling power plant of dry type of 100,000,000 kilowatts of installation total capacities, are badly in need of improving in China.
ACC system because system is simple, flexible operation, initial cost be low, heat exchange number of times is few and efficiency is high, is favored.But along with the lifting of environmental requirement, ACC system noise disturbs residents and highlights; Wind direction (than between the colder) sensitivity of ACC system to strong wind, and fan power consumption is larger.ACC system runs into policy bottleneck on Evaluation on Energy Saving, also has, in the performance assessment criteria of some gencos, force to list in station service power consumption rate [lose just and sound, should only examine the generating can (coal) consumption, comparatively reasonable.For example, examination station service power consumption rate, force the feed pump of some power plant to abandon driven by power, uses steam drive instead], make ACC system and a cold scheme comparison in run into unprecedented difficulty.Therefore, retain the advantage of ACC, eliminate fan energy consumption and noise and reduction strong wind sensitiveness, for the cooling research of dry type clear and definite direction.
First Belgian HAMON LUMMUS companies in 1993 propose the concept of Natural Draft Condenser, the NDC system of extensively being talked about afterwards, and its key concept is exactly the fan forced-air blast that substitutes ACC system with cooling tower with natural air exhaust.But this research only rests in the horizontally disposed aspect of the interior ridge of air cooling tubes condenser tower, briefly, removes exactly the fan of ACC system, and ACC is put in cooling tower.The said firm is that the conceptual design of a 200MW unit outfit dry cooling tower of Fedtsch wild goose pond two power plant is: tower overall height H=94m, and tower bottom diameter D=83m, air inlet height h10m, fails to enter practical stage.
The German GEA proposition Natural Draft Air Cooled Condenser of company concept in 1994, the NDACC system that its figure is extensively copied afterwards.October nineteen ninety-five, GEA company of Germany was that the Preliminary design of a 200MW unit outfit dry cooling tower of Fedtsch wild goose pond two power plant is: tower overall height H115m, tower bottom diameter D127m, air inlet height h14m, it is horizontally disposed that air cooling tubes condenser is still ridge in tower, bottom has additional shutter, but also fails to enter practical stage.
Summary of the invention
The object of the present invention is to provide a kind of tower direct air cooled condenser and tower direct dry cooling-system thereof, to retain, ACC system is simple, flexible operation, initial cost are low, heat exchange number of times is few and advantage that efficiency is high is eliminated ACC system fan energy consumption and noise, the sensitiveness of reduction to wind direction.
To achieve these goals, the present invention adopts following technical scheme:
A kind of tower direct air cooled condenser, comprises scroll casing shape steam distribution main and some condensing units; Condensing unit comprises that standpipe, following current tube bank, adverse current tube bank and adverse current following current distribute inclined clapboard; Standpipe comprises joins vapour standpipe and discharge, joins adverse current following current is installed between vapour standpipe and discharge distributes inclined clapboard, joins that vapour standpipe and discharge vertically arrange and discharge is positioned at and joins vapour standpipe top; Described standpipe tilts first row tube bank and second row tube bank is installed downwards; First row tube bank comprises multiple be installed on following current tube bank and multiple adverse current tube banks that are installed on discharge of joining on vapour standpipe; The second comb tube bank is arranged symmetrically with centered by restraining to join vapour standpipe with first row; The described vapour standpipe of joining connects described scroll casing shape steam distribution main; Following current tube bank is restrained parallel and interval setting with adverse current, and the end under the following current tube bank of same row and adverse current tube bank are tilted to is all connected to a condensate water collecting standpipe.
The present invention further improves and is: the skewed layout of the Eight characters that first row tube bank and second row tube bank form.
The present invention further improves and is: the angle between following current tube bank and adverse current tube bank and horizontal plane is α=30～60 °.
The present invention further improves and is: described some condensing units are circular layout, and adjacent condensing unit shares a condensate water collecting standpipe.
The present invention further improves and is: collecting pipe connects buried receipts condensate water collection endless tube, and buried receipts condensate water collection endless tube is by going condensate tank carrier pipe to connect condensate tank.
The present invention further improves and is: discharge is connected with vacuum-pumping pipeline; Condensate tank connects scroll casing shape steam distribution main by drainage pump, and condensate tank is also connected with condensate pump; Vacuum-pumping pipeline connects scroll casing shape steam distribution main, and vacuum-pumping pipeline connects condensate tank by liquid-ring type vacuum pumping pump.
The present invention further improves and is: the top of scroll casing shape steam distribution main reduces gradually to the internal diameter of end.
A kind of tower direct dry cooling-system, comprises tower direct air cooled condenser; Described tower direct air cooled condenser is arranged at armored concrete hyperbolic-type cooling tower bottom, some condensing units are circular layout, the vapour standpipe of joining of some condensing units all connects scroll casing shape steam distribution main, and the discharge of some condensing units all connects vacuum-pumping pipeline; Armored concrete hyperbolic-type cooling tower inside is provided with crosswise wind isolation board.
The present invention further improves and is: the top of described tower direct air cooled condenser is provided with the oblique bridging piece of armored concrete at cooling tower ring beam place; Collecting pipe both sides are respectively provided with two hooks, and glass fiber reinforced plastic wind deflector is movably installed between two collecting pipes by described hook; On two comb bundles of adjacent condensing unit, be stamped triangular aslant cover plate.
With respect to prior art, the present invention has the following advantages:
The tower direct dry cooling-system of the present invention does not adopt the ridge of NDC or NDACC horizontally disposed, but condenser is arranged in to the border outside cooling tower with natural air exhaust in the mode of column, overlook finned-tube bundle plate, present the Eight characters skewed (Eight characters prefix portion is high and bottom is low).Natural air exhaust, abandon using shutter, antifreeze means be contrary following current arrange, allow condenser top inflation (large condenser is become to small condenser to be used), open triangular aslant cover plate (hot blast improvements) and carry additionally the deep bead method of aerofoil (the reference wet cooling tower put into gear).Four kinds of means successively come into operation or combine and come into operation.
Shutter slightly has a certain impact to the cleaning of fin.Annual shutter is harmful within 3/4 period, has increased the mobile resistance of cold wind, has reduced heat transfer efficiency.Therefore, tower direct dry cooling-system does not use shutter, changes the aerofoil of putting into gear.The aerofoil of just putting into gear when preventing freeze in winter.In all the other periods, the aerofoil of not putting into gear.
Condensate water collecting endless tube and horizontal tube bury in below ground, for keeping Land leveling, to facilitate hanging and taking and removing of deep bead.
The dual variation of tower direct dry cooling-system energy reform of nature wind and environment temperature, there is novel structure and exquisite layout of utilizing the cooling turbine discharge of natural ventilation system, form larger heat exchange area, and can get more cooling air quantity, there is no the energy consumption of old-fashioned ACC system---the power consumption of blower fan distribution motivation, does not have noise; Cold energy consumption between tower direct dry cooling-system does not have yet---the power consumption of water circulating pump distribution motivation, the cold condenser being equipped with in steam turbine building between more not having---600MW unit is economized 36,000,000 yuan.Tower direct dry cooling-system can obtain lower condenser pressure summer, realizes the low back pressure operation of steam turbine, promotes full sending out.Some direct-cooled advantages of cold-peace between tower direct dry cooling-system is integrated, have following 8 advantages:
1, gravity-flow ventilation: utilize the air heat of dry and cold tower to rise floating function, save the axial flow blower of ACC; Be reserved with the adequate condition of " cooling, smoke evacuation, desulfurization " three towers unifications.
2, the Eight characters is arranged: windage reduces.Load transfer is to ground: condenser column is arranged on the ground, the high-altitude load of ACC (being mainly tube bank deadweight), has transferred to ground, the deadweight of cold heat-exchange working medium (recirculated water) between also not having, and Aseismic Design becomes simply (not comprising cooling tower).Under 1 atmospheric pressure, when steam condensation is water, 1725 times of volume-diminished.The internal capacity of supposing direct air cooled condenser equates with the internal capacity of a cold heat sink, and so, water, vapour in direct air cooled condenser add up to weight, be only between in cold heat sink water heavy 5/10000ths. eight.
3, standpipe self-supporting: the enabling capabilities of standpipe is the several times of horizontal tube (if DN300 pipe is 2 times, along with the increase of caliber, multiple also increases).Make full use of DN2000, DN1000 tubing string at pressurized, turned round and all directions are subject to the excellent performance aspect curved.
4, cross is every wind: in tower, have crosswise wind isolation board, can eliminate draught.
5, heat-transfer surface increases: have the condition that improves tube bank wing ratio, can significantly increase heat-sinking capability;
6, cold blast rate is large: windage is little and cause air quantity large.
7, freeze proof measure: the ratio that 1. can set arbitrarily adverse current, following current tube bank; 2. reduce and bleed, allow condenser top gassy, be equivalent to that a large condenser is become to small condenser and use; 3. open triangular aslant cover plate, hot blast gets warm again after a cold spell; 4. the aerofoil of putting into gear, reduces cooling air quantity.
8, on blow-off line, without separation valve door, vapour locking reduces.
Initial estimate, adopts the comparable ACC system of tower direct dry cooling-system to increase by 3% electricity volume.
Brief description of the drawings
Fig. 1 is the schematic diagram of the direct dry cooling systems ACC of classics; A condensing and cooling unit in figure, are drawn; The Turbo-generator Set of 600MW, generally has 56 unit.
Fig. 2 is the schematic diagram of system of the present invention; In figure, drawn 3 identical condensings and cooling unit, the finned-tube bundle plate of unit, the left and right sides is reduced to tabular drafting; In order to give top priority to what is the most important, do not draw the oblique bridging piece of armored concrete at cooling tower ring beam place.
Fig. 3 is the profile of system of the present invention along A-A line in Fig. 4, wherein 30～60 ° of α; In order clearly to represent critical piece, in figure, do not draw the pillar of cooling tower.
Fig. 4 is the cutaway view of system of the present invention along B-B line in Fig. 3, in order clearly to represent column condenser, the underground condensate water collecting endless tube in You1/4Ta district does not have drawn, in tower, there is cross wind isolation board, can eliminate draught, wind isolation board is reinforced concrete prefabricated board, is highly not less than the tower direct air cooled condenser of the present invention.
Fig. 5 a is the structural representation of the present invention that is provided with barge board, tiltedly bridging piece and triangular aslant cover plate, only draws the deep bead in Liao1/4Ta district; Fig. 5 b is the partial enlarged drawing of Fig. 5 a, has illustrated the hook pattern of deep bead, and every deep bead has 4 hooks; Between the present invention's handle, cold flat bridging piece changes the oblique bridging piece of armored concrete into, to hold huge scroll casing shape steam-distributing pipe, in figure, arrow represents that cold wind skims over the situation of finned-tube bundle plate.
Fig. 6 is the schematic diagram for expressing system scroll casing shape steam distribution pipeline of the present invention and column condenser; 30～60 ° of α, get 10 times of calculating that spiral case pipe starting point place tube section is a cold water pipe cross section, have Dmax3.16d; To 600MW unit, cold d=3m between employing, adopts tower directly dry and coldly, and spiral case pipe maximum gauge is Dmax9.48m.
Fig. 7 is similar to Fig. 4, for expressing 2 semi-scroll shelly steam-distributing pipe roads of system of the present invention, to 600MW unit, Dmax2.236d=6.7m.
Figure elements instruction card
The object of modular member 3,4,8: be convenient to factory floor manufacture, be convenient to building-site welding inside weld (caliber is too small, cannot do inseam).
Detailed description of the invention
Refer to shown in Fig. 2 to Fig. 7, a kind of tower direct air cooled condenser of the present invention, comprises scroll casing shape steam distribution main 2 and condensing unit.Condensing unit comprises that standpipe, following current tube bank 5, adverse current tube bank 6 and adverse current following current distribute inclined clapboard 16.Standpipe comprises joins vapour standpipe 3 and discharge 4, joins adverse current following current is installed between vapour standpipe 3 and discharge 4 distributes inclined clapboard 16, joins that vapour standpipe 3 and discharge 4 vertically arrange and discharge 4 is positioned at and joins vapour standpipe 3 tops.Above-mentioned standpipe tilts first row tube bank and second row tube bank is installed downwards, the skewed layout of the Eight characters that first row tube bank and second row tube bank form.First row tube bank comprises multiple be installed on following current tube bank 5 and multiple adverse current tube banks 6 that are installed on discharge 4 of joining on vapour standpipe 3; The second comb tube bank is arranged symmetrically with first row tube bank.Following current tube bank 5 is restrained 6 parallel and interval settings with adverse current, and the end under the following current tube bank 5 of same row and adverse current tube bank 6 are tilted to is all connected to a condensate water collecting standpipe 8.Angle between following current tube bank 5 and adverse current tube bank 6 and horizontal plane is α=30～60 °.Adjacent condensing unit shares a condensate water collecting standpipe 8.The ratio of distributing inclined clapboard 16 can adjust arbitrarily and distribute adverse current and following current condenser by adjusting adverse current following current.First row tube bank and the second row tube bank Eight characters are arranged: windage reduces, load transfer is to ground: condenser column is arranged on the ground, the high-altitude load of ACC (being mainly tube bank deadweight), transfer to ground, also the deadweight of cold heat-exchange working medium (recirculated water) between not having, Aseismic Design becomes simply (not comprising cooling tower); Under 1 atmospheric pressure, when steam condensation is water, 1725 times of volume-diminished.The internal capacity of supposing condenser of the present invention equates with the internal capacity of a cold heat sink, and so, water, vapour in condenser of the present invention add up to weight, be only between in cold heat sink water heavy 5/10000ths. eight.
Join vapour standpipe 3 and adopt standpipe self-supporting: the enabling capabilities of standpipe is the several times of horizontal tube (if DN300 pipe is 2 times, along with the increase of caliber, multiple also increases).Make full use of DN2000, DN1000 tubing string at pressurized, turned round and all directions are subject to the excellent performance aspect curved.
Exhaust steam flows in scroll casing shape steam distribution main 2 by steam discharge main, then enters and join in vapour standpipe 3, is condensed into water through following current tube bank 5, flows in collecting pipe 8; Restrain through following current a small amount of steam not yet condensing after 5, rise to the top of collecting pipe 8, be condensed into water through adverse current tube bank 6; Other gas such as not condensing vapour and leaked-in air etc. of minute quantity, is collected in discharge 4, is pumped by vacuum-pumping pipeline 13.When steam condensation is water, volume is rapid little over thousands of times and form vacuum.Collecting pipe 8 connects buried receipts condensate water collection endless tube 17, and buried receipts condensate water collection endless tube 17 is by going condensate tank carrier pipe 170 that the condensate water of collection is delivered to condensate tank 9.Condensate tank 9 connects scroll casing shape steam distribution main 2 by drainage pump 12, and condensate tank 9 is also connected with condensate pump 11.Vacuum-pumping pipeline 13 connects scroll casing shape steam distribution main 2, and connects condensate tank 9 by liquid-ring type vacuum pumping pump 10.
A kind of tower direct dry cooling-system of the present invention, comprises tower direct air cooled condenser; Tower direct air cooled condenser is arranged at armored concrete hyperbolic-type cooling tower 15 bottoms, multiple condensing units are circular layout, the vapour standpipe 3 of joining of multiple condensing units all connects scroll casing shape steam distribution main 2, and the discharge 4 of multiple condensing units all connects vacuum-pumping pipeline 13.Armored concrete hyperbolic-type cooling tower 15 inside are provided with crosswise wind isolation board, can eliminate draught.
Refer to shown in Fig. 5 a and Fig. 5 b, the top of tower direct air cooled condenser is provided with the oblique bridging piece 20 of armored concrete at cooling tower ring beam place; Collecting pipe 8 both sides are respectively provided with two hooks, glass fiber reinforced plastic wind deflector 19 can be hung between two collecting pipes 8 by hook.On two comb bundles of adjacent condensing unit, be stamped triangular aslant cover plate 21.
Refer to shown in Fig. 4 and Fig. 7, in the present invention, scroll casing shape steam distribution main 2 can be as the monolithic construction in Fig. 4, also can adopt the symmetrical Split type structure shown in Fig. 7.The top of scroll casing shape steam distribution main 2 reduces gradually to the internal diameter of end.
Power Plant varies in size, and causes tower direct dry cooling-system scale difference.There are the first power plant, two embodiments of second power plant.
One, a first 66OMW Turbo-generator Set of power plant is can embodiment as follows:
Two, the embodiment of second power plant 0.3MW unit is as follows:
Second power plant 0.3MW unit and the public wet cooling tower of other 5 units, be separated, and clammyly changes tower direct dry cooling-system, and tower direct dry cooling-system is carried out to industrialness checking.Clammy tower and all the other units are maintained the statusquo, and do not make any changes.
By expanding the scale of tower direct dry cooling-system, tower direct dry cooling-system can match with wet cooling gas turbine, and this does not need to transform steam turbine.
Tower direct dry cooling-system is designed with wind isolation board in tower, and surrounding air flow field is not had to special requirement.According to the present situation of second power plant, dry and cold tower is arranged in steam turbine building stiff end, far away apart from approximately 50 meters, steam turbine.
The exhaust steam of discharging from steam turbine, draws main building by the pipeline of DN3000, arrives the scroll casing shape main steam range outside cooling tower, enters respectively the steam distribution pipe of 12 DN2000, to bank of condenser pipes distributing steam.Because the project location lowest temperature is 30 DEG C, condenser adverse current section area is the gross area 20%, and condenser is arranged in cooling tower border, height 6m, width 6m.Adopt 3 combs, finned tube is that steel rolls constructed of aluminium, and steel pipe specification is D25 × 1.5mm, and fin specification is D57/D25mm, and sheet is thick is 0.30mm, spacing of fin 2.3mm.
Tower direct dry cooling-system calculates and configuration list
| Sequence number | Project | Tower is arranged vertically outward |
| 1 | Completely send out summer temperature (DEG C) | 30 |
| 2 | Full carbuncle on the back pressure [kPa(a)] | 18 |
| 3 | Design temperature (DEG C) | 20 |
| 4 | Design back-pressure [kPa(a)] | 10.8 |
| 5 | Air side film-cooled heat (m 2） | 36000 |
| 6 | Steam side condensation area (ten thousand m 2） | 1352 |
| 7 | Windward side area (m 2） | 360 |
| 8 | Windward side wind speed (m/s) | 1.68 |
| 9 | Pillar condenser number (individual) | 12 |
| 10 | Dry and cold tower border pillar condenser outside diameter (m) | 31 |
| 11 | Triangular aslant cover plate perpendicular bisector length (m) | 6.96 |
| 12 | 0 meter of absolute altitude place diameter of cooling tower (m) | 13 |
| 13 | Cooling tower height (m) | 78 |
| 14 | Cooling tower air inlet height (m) | 6.5 |
| 15 | Tiltedly bridging piece width (plagioclase) (m) | 1.15 |
Design data sheet (declared working condition)
The advantage that second power plant 0.3MW Transformation of Unit is tower direct dry cooling-system:
(1) tower direct dry cooling-system natural air exhaust effect of hot-air in cold tower cylinder between having used, has realized the heating power automatic cycle of cooling-air.Not only saved direct air cooling system High Altitude Platform and supporting frame, also saved all investments of whole axial fan systems, more there is no blower fan power consumption, maintenance cost and noise, eliminated all faults that affect Unit Economic and safe operation that fan system brings simultaneously yet.
Tower direct dry cooling-system has been used the advantage that the direct steam discharge of steam turbine enters ACC.There is no the armamentarium of condenser in a cooling system steam turbine building and terminal temperature difference loss and circulation, without power consumption, noise and occupation of land, reduce investment outlay.Also all faults that affect Unit Economic and safe operation that these equipment bring have been eliminated simultaneously.
Tower direct dry cooling-system has only just been passed to air by heat through a partition heat exchange, and heat transfer temperature loss is little, and logarithmic mean temperature difference (LMTD) is large, is conducive to reduce the operation back pressure of steam turbine.Adopt and a cold same air mass flow, can take away more heat, make steam turbine back pressure fall cold lowlyer than between, thereby increase the power output of steam turbine.
Tower direct dry cooling-system has thoroughly solved the distinctive hot air circulation problem of ACC.
Summer, the temperature of condensate water was lower 15 DEG C than 70 DEG C of ACC, than cold 65 DEG C also low 10 DEG C; The deironing amount of condensate polishing system is little, thereby reduces costs.
Second power plant 0.3MW steam turbine is clammy change tower direct dry cooling-system dry and cold after, strengthen cooling air quantity 50%, the finned tube gross area is 36000m
2(ACC area significantly increases relatively), cooling effect is good.In the time of 20 DEG C of temperature, tower direct dry cooling-system can ensure that steam turbine back pressure reaches 10.8kPa, makes steam turbine to approach the operation of clammy operating mode, under the constant condition of throttle flow, only reduces generated energy 18kW.
Tower direct dry cooling-system power consumption only has vavuum pump power consumption 20kW, condensate pump power consumption 11kW, under 20 DEG C of temperature conditions, not only 18 tons of water savings per hour, also than present clammy economize on electricity 72kW, than a cold economize on electricity 342kW, than direct-cooled economize on electricity 362kW, the tower direct dry cooling-system gross investment of second power plant is about 6,000,000 yuan, within 10 years, can realize repay capital with interest (electric weight of having considered other 5 unit cooling system grow institute super generatings when estimation).
Claims (2)
1. a tower direct air cooled condenser, is characterized in that, comprises scroll casing shape steam distribution main (2) and some condensing units; Condensing unit comprises that standpipe, following current tube bank (5), adverse current tube bank (6) and adverse current following current distribute inclined clapboard (16); Standpipe comprises joins vapour standpipe (3) and discharge (4), join and adverse current following current is installed between vapour standpipe (3) and discharge (4) distributes inclined clapboard (16), join that vapour standpipe (3) and discharge (4) vertically arrange and discharge (4) is positioned at and joins above vapour standpipe (3); Described standpipe tilts first row tube bank and second row tube bank is installed downwards; First row tube bank comprises multiple be installed on following current tube bank (5) and multiple adverse current tube banks (6) that are installed on discharge (4) of joining on vapour standpipe (3); The second comb tube bank is arranged symmetrically with centered by restraining to join vapour standpipe (3) with first row; The described vapour standpipe (3) of joining connects described scroll casing shape steam distribution main (2); Parallel and the interval of following current tube bank (5) and adverse current tube bank (6) arranges, and the following current tube bank (5) of same row and adverse current are restrained (6) end under being tilted to and be all connected to a condensate water collecting standpipe (8);
The skewed layout of the Eight characters that first row tube bank and second row tube bank form;
Angle between following current tube bank (5) and adverse current tube bank (6) and horizontal plane is α=30～60 °;
Described some condensing units are circular layout, and adjacent condensing unit shares a condensate water collecting standpipe (8);
Condensate water collecting standpipe (8) connects buried receipts condensate water collection endless tube (17), and buried receipts condensate water collection endless tube (17) is by going condensate tank carrier pipe (170) to connect condensate tank (9);
Discharge (4) is connected with vacuum-pumping pipeline (13); Condensate tank (9) connects scroll casing shape steam distribution main (2) by drainage pump (12), and condensate tank (9) is also connected with condensate pump (11); Vacuum-pumping pipeline (13) connects scroll casing shape steam distribution main (2), and vacuum-pumping pipeline (13) connects condensate tank (9) by liquid-ring type vacuum pumping pump (10);
The top of scroll casing shape steam distribution main (2) reduces gradually to the internal diameter of end.
2. a tower direct dry cooling-system, is characterized in that, comprises tower direct air cooled condenser claimed in claim 1; Described tower direct air cooled condenser is arranged at armored concrete hyperbolic-type cooling tower (15) bottom, some condensing units are circular layout, the vapour standpipe (3) of joining of some condensing units all connects scroll casing shape steam distribution main (2), and the discharge (4) of some condensing units all connects vacuum-pumping pipeline (13); Armored concrete hyperbolic-type cooling tower (15) inside is provided with crosswise wind isolation board; The top of described tower direct air cooled condenser is provided with the oblique bridging piece of armored concrete (20) at cooling tower ring beam place; Condensate water collecting standpipe (8) both sides are respectively provided with two hooks, and glass fiber reinforced plastic wind deflector (19) is movably installed between two condensate water collecting standpipes (8) by described hook; On two comb bundles of adjacent condensing unit, be stamped triangular aslant cover plate (21).
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| US20150345166A1 (en) * | 2013-05-28 | 2015-12-03 | Spx Cooling Technologies, Inc. | Modular Air Cooled Condenser Apparatus and Method |
| CN104533545A (en) * | 2014-12-27 | 2015-04-22 | 西安热工研究院有限公司 | Novel air cooling system |
| CN105464725A (en) * | 2015-12-31 | 2016-04-06 | 武汉凯迪电力工程有限公司 | Direct-air-cooling power generation system with natural ventilation cooling tower |
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| CN107120980A (en) * | 2017-04-20 | 2017-09-01 | 华北电力大学 | Vertically arranged mixed ventilation direct air cooling system outside a kind of air cooling tubes condenser tower |
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