CN102538571A - Multifunctional compound air inlet control device of counterflow type natural ventilation cooling tower - Google Patents
Multifunctional compound air inlet control device of counterflow type natural ventilation cooling tower Download PDFInfo
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Abstract
The invention relates to a multifunctional compound air inlet control device of a counterflow type natural ventilation cooling tower. The multifunctional compound air inlet control device constituted by a certain number of air guide plates, air baffle plates and sound insulation plates is arranged outside the air inlet circumference of the cooling tower, wherein the multifunctional compound air inlet control device can improve air inlet uniformity of the cooling tower, improve the performances of the cooling tower, reduce the temperature of circulating water out of the tower and improve economy in operation of an unit through the air guide plates; by arranging the air baffle plates, the cooling tower can be prevented from being iced in cold winter; and by arranging the sound insulation plates, noise pollution at the periphery of the cooling tower can be further reduced.
Description
Technical field
The present invention relates to the multi-functional compound air intake control technology of a kind of reverse-flow cooling stack.This technology constitutes multi-functional compound air intake control device through wind deflector, deep bead and the sound panel that some is set outside cooling tower air intake circumference; To air intake flow field uniformity coefficient and advance tower air quantity size and control and optimize, thereby realize control to the cooling tower cooling effect.The present invention can reduce freezing, the regional noise pollution of reduction cooling tower of leaving water temperature, prevention cooling tower of cooling tower, the economy and the security that improve unit operation.The invention belongs to thermoelectricity and nuclear power field.
Background technology
Reverse-flow cooling stack is the widely used cooling device of present power system, and its effect is that the cooling water with the used heat of carrying under one's arms carries out heat exchange at Ta Nei and air, makes used heat be transferred to air and spills into atmosphere.As the important auxiliary equipment in power plant's thermodynamic cycle, the cooling tower energy-saving potential is bigger, and its thermal performance is directly connected to the economic benefit of power plant.The cooling tower of function admirable is the precondition that guarantees that steam turbine has the higher thermal efficiency, safe operation and generates electricity at full capacity.At present, energy-saving and cost-reducing three big main frames that mainly concentrate in power plant, and the cooling tower in the circulation is lacked enough attention, even many power plant have ignored the maintenance and the supervision of cooling tower, cause the cooling capacity reduction of cooling tower.Domestic cooling tower efficient generally is in a lower level, because cooling tower goes out the tower water temperature and is higher than design load through the environment work down of the off-design conditions of being everlasting.Cooling tower efficient reduces, the cooling effect variation, and the cooling water temperature that gets into condenser is raise, and reduces the vacuum and the cooling effect of condenser; And then cause steam turbine exhaust pressure and temperature to raise; Increase the gross coal consumption rate of unit, finally cause unit output to reduce the economy variation.Document points out that for the 300MW unit, cooling tower goes out the tower water temperature and raises 1 ℃; Thermal efficiency of cycle can reduce by 0.23%; The unit coa consumption rate will increase by 0.798%, and heat consumption rate will increase 23.39kJ/kWh, and a year coal consumption amount will increase 1676t; If according to 800 yuan of meters of mark coal per ton, operating cost is annual to increase about 1,340,000 yuan.
The cooling effect of cooling tower receives the influence of many-sided factor, like environment weather parameter, cooling tower design parameter, unit operation load etc.The improvement of cooling tower water side performance is paid attention in the domestic and international power plant of investigation discovery mostly, comprises changing filler, water distribution pattern, nozzle arrangements, arrangement of nozzles mode etc., and the transformation of cooling tower seldom relates to gas effluent field.In recent years; People have recognized gradually that natural wind is for the adverse effect of cooling tower and actively seek effective measures; But most of at present research also just is directed against dry cooling tower, and does not also launch deep research to the draught exclusion device of wet cooling tower and for the cooling tower Effect on Performance.
Natural wind is a key factor that influences the cooling tower cooling effect.Because natural wind is a stochastic variable; Certain any wind speed and direction is not equal to the steady flow in the simulated test, so the result of on-the-spot test has certain randomness along with the time constantly changes; And natural wind is very complicated for the influence of cooling tower; Also relevant with factors such as the type of tower, shape, payload, the researcher has carried out a large amount of lab simulations tests and outdoor substance test job, but still is difficult to provide expression formula comparatively accurately up to now.
Under the natural wind environment, influence that cooling tower conducts heat, the principal element of mass-transfer performance is the uniformity that ventilation and wind speed distribute in the packing area in the tower, and ventilation and wind speed uniformity mainly receive circumferential air inlet Influences on Wind Velocity at the bottom of the tower.When calm, circumferential air intake is evenly axisymmetric at the bottom of the tower, and promptly inner-tower filling material heat and mass transfer performance everywhere also is that axial symmetry distributes; When wind is arranged, extraneous change of wind velocity to tower at the bottom of around wind speed considerable influence is arranged, promptly ventilation is had considerable influence.When wind speed reached the 0.5m/s left and right sides, the windward side wind speed increased, and the lee face wind speed reduces; The trend that reduces also appears in the wind speed in crosswind district; Cooling tower along the bottom circumference air intake inhomogeneous, advancing tower and going out the tower place and have eddy current, the air intake resistance increases; The overall ventilation of cooling tower reduces, and heat transfer, mass-transfer performance in the tower weaken.
During north China cooling tower winter operation, cross low some position of cooling tower that can cause because of temperature and freeze, thereby influence the normal operation of cooling tower.Freezing has serious harmfulness, can influence the cooling effect of tower, increases the loading of structure, reduces the service life of xoncrete structure, causes the bursting by freezing of pipeline valve etc.In addition, the trickle of reverse-flow cooling stack directly falls into the pond after going out filler, and descent altitude is big, is the main source of cooling tower buzz, and this noise spreads out of from air inlet, to around cause severe noise to pollute.
Summary of the invention
The present invention is directed to the problems of existing reverse-flow cooling stack in design, existence in service; Purpose is to provide a kind of can improve cooling tower air intake uniformity; Improve the performance of cooling tower, reduce the recirculated water tower exit temperature, improve the unit operation economy; Prevent that in the winter of cold cooling tower from freezing, reduce the multi-functional compound air intake control device of cooling tower periphery noise pollution.
The technical scheme that the present invention adopts is: the multi-functional compound air intake control device of reverse-flow cooling stack, and its characteristics are: wind deflector, deep bead and sound panel that some is set outside cooling tower air intake circumference constitute multi-functional compound air intake control device; Form angle between multi-functional compound air intake control device and the cooling tower circle diameter; Multi-functional compound air intake control device is arranged on the triangle air inlet place that forms between adjacent two chevron shaped pillars.
Wherein, the quantity of wind deflector is confirmed according to factors such as the size of cooling tower, cooling capacity, cooling tower periphery facility deployment scenarios.Cooling tower trickle area is big more, and the quantity that wind deflector is set is many more; The quantity of wind deflector is 0.25,0.5,0.75 or 1.0 times of chevron shaped pillar quantity; Wind deflector evenly is arranged on the triangle air inlet place that forms between adjacent two chevron shaped pillars around cooling tower air intake circumference, and when running into triangle air inlet place pipeline, equipment, platform or building are arranged, this place is not provided with wind deflector.
Say that further the wind deflector shape has multiple, can from following several types of templates, take the circumstances into consideration to select for use according to the actual conditions of cooling tower:
(1) rhombus is dull and stereotyped: the acute angle of rhombus is 75 ~ 80 degree.Wind deflector height value H is limited to 0.8 ~ 1.0 times of cooling tower air inlet height.The thickness d of wind deflector is 150 ~ 300mm.Two hypotenuse roundings of wind deflector, its radius R is 75 ~ 175mm.
(2) rectangular flat: this type of wind deflector pattern can be divided into square wind deflector, short long rectangle wind deflector (be wind deflector height H < wind deflector length L) and high short rectangle wind deflector (be the wind deflector height H>wind deflector length L) according to size.The thickness d of wind deflector is 150 ~ 300mm.Two vertical edge roundings of wind deflector, its radius R is 75 ~ 175mm.
(3) inverted right-angled trapezium is dull and stereotyped: limit long in two parallel edges of this trapezoidal wind deflector is the top air intake of wind deflector; Short limit and ground basic fixed; Right-angle side is the sidepiece air intake of wind deflector, hypotenuse near and be parallel to the triangle air intake surface between adjacent two the chevron shaped pillars of cooling tower bottom air inlet circumference.Trapezoidal acute angle is 75 ~ 80 degree.The thickness d of wind deflector is 150 ~ 300mm.The right-angle side of wind deflector and hypotenuse rounding, its radius R are 75 ~ 175mm.
The height value H of the wind deflector that (4) relates in above-mentioned (2), (3) is limited to 0.8 ~ 1.0 times of cooling tower air inlet height.The length L of wind deflector confirms that according near the place situation the cooling tower air intake circumference its value is limited to 0.5 ~ 1.0 times of wind deflector height H.Arrange under the prerequisite with road that the length of wind deflector selects higher value increasing the air intake flow area between the adjacent wind deflector as far as possible, and then increases the cooling tower intake not influencing cooling tower periphery facility.
(5) cross section is the rectangle wind deflector of aerofoil profile: wind deflector height value H is limited to 0.8 ~ 1.0 times of cooling tower air inlet height.The wind deflector cross section is a symmetrical airfoil, and wing chord length L (being wind deflector length) is 1.0 ~ 1.5 times of the wind deflector height H.Maximum relative thickness (c/L) is 4% ~ 9%, the relative position (X of maximum ga(u)ge
c/ L) be 30%, leading-edge radius r is 75 ~ 175mm, trailing edge angle B is no more than 30 °.
Further say: also include deep bead, this deep bead is arranged at two top air intake and/or sidepiece air intakes between the wind deflector again.
More a step is said: also include sound panel, this sound panel is arranged at two sidepiece air intakes between the wind deflector.
The present invention has following beneficial effect:
1, the wind deflector, deep bead and the sound panel that some are set outside cooling tower air intake circumference constitute multi-functional compound air intake control device; Through its guide functions with the influence that turns to advantage of the adverse effect of natural wind; Air intake mode, air intake zone, intake, the air-flow distribution of cooling tower are all changed; Mainly show: cooling tower periphery air intake uniformity obviously improves, and air (level) zone of cooling tower periphery entering cooling tower enlarges makes the cooling tower intake improve 12% ~ 30%, at the stable ascending air of the inner formation of cooling tower; Penetrate cooling tower inside, the whirlpool that has reduced in the tower is interval with making even air.
2, prevention arranged winter cooling tower is freezing when requiring for northern frore area; Can through with the sealing of air inlet part area, reserve a part of area air intake in the deep bead of air intake passage place (top air intake and/or sidepiece air intake) the suspension some of winter between wind deflector; The air inflow of tower is reduced; Improve the circulating water temperature that flows out filler and collecting-tank, thereby prevent that cooling tower from freezing, and guarantees the safe operation of cooling tower.Because deep bead also has certain sound insulation capabilities; If the high building of noise reduction demand is arranged near plant area's cooling tower; The deep bead that can keep towards this building in other seasons except that winter plays deadening, perhaps hangs sound panel to satisfy the noise reduction demand of building in other seasons except that winter at the wind deflector sidepiece air intake towards this building.
3, for there not being the cooling tower antifreezing requirement winter but when the building of noise reduction demand is arranged near the cooling tower, can be at suspension sound panel throughout the year on the wind deflector sidepiece air intake of this building side, to reach the effect of sound insulation and noise reduction.
Description of drawings
Fig. 1 is the multi-functional compound air intake control device floor plan sketch map of the reverse-flow cooling stack of the present invention.
Fig. 2 is the layout drawing of the present invention's one preferred embodiment.
Fig. 3 be Fig. 2 along K to structural representation.
Fig. 4 be Fig. 2 along L to structural representation.
Fig. 5 and Fig. 6 are the shape sketch mapes of the dull and stereotyped wind deflector of rhombus.
Fig. 7 to Figure 12 is the shape sketch map of rectangular flat wind deflector.
Figure 13 and Figure 14 are the shape sketch mapes of the dull and stereotyped wind deflector of inverted right-angled trapezium.
Figure 15 and Figure 16 are that the cross section is the shape sketch map of the rectangle wind deflector of aerofoil profile.
The specific embodiment
The problem that the present invention exists according to existing reverse-flow cooling stack technology; The multi-functional compound air intake control device of a kind of reverse-flow cooling stack has been proposed; See also illustrated in figures 1 and 2ly, the wind deflector 2 of some is installed outside around cooling tower air intake circumference outside the chevron shaped pillar in cooling tower 1 bottom, these wind deflector 2 vertical grounds vertically are provided with; And and cooling tower circle diameter 3 between form angle (setting angle), the number of degrees of this angle 0 ~ 45 the degree between.Wind deflector 2 is equidistantly arranged along the air intake circumference in cooling tower 1 bottom; Its position is arranged on the triangle air inlet place that forms between two chevron shaped pillars 4; And confirm the installation quantity of wind deflector according to the demand of reality; When running into triangle air inlet place pipeline, equipment, platform or building being arranged, this place is not provided with wind deflector.
Seeing also Fig. 5 and shown in Figure 6, is example with the dull and stereotyped wind deflector of rhombus: serve as to guarantee that wind deflector is parallel with the triangle air intake surface between the per two chevron shaped pillars in cooling tower bottom near the hypotenuse of cooling tower, the acute angle of rhombus is 75 ~ 80 degree.The material of wind deflector and structural shape are confirmed according to the weather conditions and the anti-freezing requirement of cooling tower in winter of plant area.For the area such as the north cold area that have winter the prevention cooling tower to freeze and require, the material selection strength grade of wind deflector is the concrete between C30 ~ C45, adopts monolithic reinforced concrete structure; For the area such as the southern area that do not prevent winter cooling tower to freeze and require, wind deflector adopts steel structure framework to add the pattern of steel covering.The wind deflector height H is 0.8 ~ 1.0 times of air inlet height.The wind deflector thickness d of reinforced concrete structure is 150mm ~ 350mm, the bottom capping, and limit is taken off at the top; The wind deflector thickness d that steel structure framework adds the steel stressed-skin construction is 200mm.The mounting distance of wind deflector is (wind deflector is near the gap of the hypotenuse and the cooling tower air inlet of cooling tower) 300 ~ 500mm; The setting angle of wind deflector is 0 ~ 45 degree; The setting angle of each wind deflector can be different, and this setting angle is mainly confirmed according to plant area's meteorological condition and the residing position of wind deflector.Two hypotenuse roundings of wind deflector, its radius R is 75 ~ 175mm.
Wind deflector can also be various ways or its combinations such as rectangle wind deflector of aerofoil profile for rectangular flat, inverted right-angled trapezium flat board or cross section.
See also Fig. 7 to shown in Figure 12, it is the structural representation of rectangle wind deflector.This type of wind deflector pattern can be divided into square wind deflector, short long rectangle wind deflector (be wind deflector height H < wind deflector length L) and high short rectangle wind deflector (be the wind deflector height H>wind deflector length L) according to size.The thickness d of wind deflector is 150 ~ 300mm.Two vertical edge roundings of wind deflector, its radius R is 75 ~ 175mm.
See also Figure 13 and shown in Figure 14, it is inverted right-angled trapezium wind deflector.Limit long in two parallel edges of this trapezoidal wind deflector is the top air intake of wind deflector; Short limit and ground basic fixed; Right-angle side is the sidepiece air intake of wind deflector, hypotenuse near and be parallel to the triangle air intake surface between adjacent two the chevron shaped pillars of cooling tower bottom air inlet circumference.Trapezoidal acute angle is 75 ~ 80 degree.The thickness d of wind deflector is 150 ~ 300mm.The right-angle side of wind deflector and hypotenuse rounding, its radius R are 75 ~ 175mm.
Above-mentioned rectangle wind deflector wind deflector and right-angled trapezium wind deflector height value H are limited to 0.8 ~ 1.0 times of cooling tower air inlet height.The length L of wind deflector confirms that according near the place situation the cooling tower air intake circumference its value is limited to 0.5 ~ 1.5 times of wind deflector height H.Arrange under the prerequisite with road that the length of wind deflector selects higher value increasing the air intake flow area between the adjacent wind deflector as far as possible, and then increases the cooling tower intake not influencing cooling tower periphery facility.
See also Figure 15 and shown in Figure 16, it is the rectangle wind deflector of aerofoil profile for the cross section.Wind deflector height value H is limited to 0.8 ~ 1.0 times of cooling tower air inlet height.The wind deflector cross section is a symmetrical airfoil, and wing chord length L (being wind deflector length) is 1.0 ~ 1.5 times of the wind deflector height H.Maximum relative thickness (c/L) is 4% ~ 9%, the relative position (X of maximum ga(u)ge
c/ L) be 30%, leading-edge radius r is 75 ~ 175mm, trailing edge angle B is no more than 30 °.
The multi-functional compound air intake control device of the reverse-flow cooling stack of the present invention can also include deep bead 5 and sound panel 6; See also Fig. 3 and shown in Figure 4; Wherein, Deep bead 5 is arranged on the air intake passage place between two adjacent wind deflectors, and air intake passage comprises top air intake and sidepiece air intake.Deep bead 5 can be arranged on the sidepiece air intake separately, also can be arranged on top air intake and sidepiece air intake according to actual needs.In order to cooperate the installation of deep bead, between two adjacent wind deflectors, support is set and is used to hang deep bead.Pre-buried embedded part is used to weld the support of suspension deep bead on wind deflector, and wherein rack beams can be selected channel-section steel, angle steel or round steel for use, and the position of embedded part is in the edge of wind deflector top air intake and sidepiece air intake.The choosing of deep bead material need be satisfied wind load, requirement such as anticorrosion, can select fiberglass for use.Deep bead is made up of some daughter boards usually, and sub-deep bead is shaped as approximate parallelogram, the about 3000mm of length, the about 1000mm of width, the about 8mm of thickness.The deep bead that is suspended on wind deflector sidepiece air intake can be divided into upper, middle and lower-ranking, 4 ~ 6 sub-deep beads of each layer suspension; The deep bead that is suspended on cooling tower top air intake is divided into three row, and every row are established 4 ~ 6 sub-deep beads; The length of sub-deep bead and width are confirmed according to the air intake passage width between the wind deflector length of side and the adjacent wind deflector.The sub-deep bead of each layer, each row is coated with various colors and identification character to be distinguished.
Wherein, said sound panel 6 is arranged on the sidepiece air intake of air intake passage between adjacent two wind deflectors.Pre-buried some embedded parts are used to weld the support of suspension sound panel on wind deflector, and wherein rack beams can be selected channel-section steel, angle steel or round steel for use, and steel strength satisfies the deadweight and the wind load requirement of sound panel.The position of embedded part is on the edge of wind deflector sidepiece air intake.The sound panel material is selected soft fibre, PMMA material or polycarbonate sheet for use, and sound panel satisfies wind load, requirement such as anticorrosion.Sound panel 6 is generally some daughter boards and constitutes, and sub-sound panel is shaped as approximate parallelogram, the about 3000mm of length, the about 1000mm of width, the about 100mm of thickness.The sound panel that is suspended on wind deflector sidepiece air intake can be divided into upper, middle and lower-ranking, 4 ~ 6 sub-sound panels of each layer suspension, and sub-sound panel length and width are confirmed according to the air intake passage width between the wind deflector length of side and the adjacent wind deflector.Sound panel is suspended on several wind deflectors of this side of building that the noise reduction demand is arranged, and other air intake zones need not hang sound panel.The sub-sound panel of each layer is coated with various colors and identification character to be distinguished.
Area such as north cold area for there being winter the prevention cooling tower to freeze and require need be provided with wind deflector and deep bead simultaneously.Deep bead mainly uses at north cold area winter, and need not hang deep bead other seasons.If the higher building of noise reduction sound isolation requirement is arranged near the cooling tower; The deep bead that then on the wind deflector sidepiece air intake of this building, is hung can keep to play deadening throughout the year, perhaps hangs sound panel in other seasons except that winter at the wind deflector sidepiece air intake towards this building.For there not being area such as the southern area that the prevention cooling tower freezes and requires winter, wind deflector is set, deep bead is not set.If the A that " industrial enterprise's standard on emission of environmental noise within the boundary of an industrial enterprise " (GB12348-2008) stipulate, the building in category-B room are arranged near the cooling tower; Like office, night shift room, lobby, dormitory building etc.; And the noise level of cooling tower has surpassed the standard of regulation and stipulation, and wind deflector and sound panel need be set simultaneously.
Below be a concrete case study on implementation of the present invention, be used to explain the beneficial effect of present technique scheme:
2 * the 600MW of north cold area power plant unit, trickle area of every machine assembly is 6500m
2Reverse-flow cooling stack, cooling tower zero rice diameter is 104m, air inlet height 8.1m, tower outlet diameter 64m, 88 chevron shaped pillars are arranged at the cooling tower bottom.The cooling tower leaving water temperature is about 31.4 ℃ under the TRL operating mode, about 9.5 ℃ of the coolant water temperature range of decrease.This area is mean wind speed 4.7m/s for many years, and natural wind is bigger to the cooling tower thermal performance influence.
The multi-functional compound air intake control technology of a kind of reverse-flow cooling stack that at present will the present invention relates to applies to this power plant, for one of them cooling tower disposes multi-functional compound air intake control device.
This cooling tower surrounding building distributes and environmental profiles is: (1) has the annular cement access path of a wide 5m around cooling tower bottom air inlet circumference, is the lawn greening band on every side; (2) there is one of cooling tower inlet channel valve box in the zone of the just northern adjacent air inlet in cooling tower bottom, takes up an area of about 13m * 18m; (3) zone of the adjacent air inlet in the positive west of cooling tower has a steel ladder to lead to cooling tower filler layer manhole, takes up an area of about 8m * 9m; (4) the cooling tower Due South has the factory road of a wide 4.2m apart from the about 10m of air inlet place, and has one widely this factory road and annular access path to be coupled together for the road of 4.2m; (5) adjacent access path has a cooling tower backwater ditch in cooling tower North by East 40 ~ 70 degree scopes, takes up an area of about 26m * 14m; (6) there is an office building at about 97m place apart from the cooling tower center in the zone of the positive north by west of cooling tower 20 ~ 50 degree, takes up an area of about 70m * 15m, and the cooling tower buzz pollution is more serious, need take the sound insulation and noise reduction measure.
To above-mentioned condition, following multi-functional compound air intake control device arrangement is proposed:
In view of the cooling tower periphery has many zones that is not suitable for arranging wind deflector that (2) ~ (5) relate to; These area distribution are disperseed; Cooling tower bottom air inlet circumference can be used in theory outward arranging that the annular section of wind deflector is divided into a plurality of parts; For fully guaranteeing the air intake control effect of each part, the triangle air intake surface place that at present is employed in per two chevron shaped pillars compositions is provided with a wind deflector, promptly along cooling tower bottom air inlet circumference 88 wind deflectors is set evenly in theory; Remove after the zone that above-mentioned (2) ~ (5) relate to, cooling tower bottom air inlet circumference can be arranged 71 wind deflectors outward altogether.
Referring to Fig. 2, wind deflector is selected the C30 cast-in-place concrete structure for use, and wind deflector is shaped as rhombus, acute angle 75 degree, and height 8100m, length of side 8385mm, bottom thickness 350mm, top thickness 150mm, apart from the mounting distance 500mm of cooling tower air inlet, setting angle is 15 degree.
Referring to Fig. 2, Fig. 3 and Fig. 4,4 of 3 rows, every row totally 12 deep beads are installed on two adjacent wind deflector air intake passage sidepiece air intakes, 4 of 3 row, every row totally 12 deep beads are installed on the air intake of top, deep bead quantity amounts to 1608.The needs that relate in above-mentioned (6) take the zone of sound insulation and noise reduction measure to have 11 wind deflectors, and the deep bead of installing on the sidepiece air intake of adjacent two wind deflectors can play the sound insulation and noise reduction effect, can annually keep, and quantity amounts to 120.
This programme expection can make this cooling-tower circulating water go out 1.2 ℃ of tower water temperature reductions, and correspondingly net coal consumption rate can reduce 1.2g/kWh, and winter, the phenomenon of freezing can not appear in cooling tower, and the noise level of office areas is reduced to below the 50dB.Utilize hour 5500h, annual electricity generating capacity 33 * 10 per year
8KWh, 800 yuan/t of coal price calculate, and this scheme year can be practiced thrift standard coal 3960t, and year can be practiced thrift 316.8 ten thousand yuan of operating costs.This project is invested about 4,350,000 yuan, and be about 16 months payoff period.This shows that this programme energy-saving effect is obvious, remarkable in economical benefits.
Claims (10)
1. the multi-functional compound air intake control device of reverse-flow cooling stack; Wind deflector, deep bead and sound panel that some is set outside cooling tower bottom air inlet circumference constitute multi-functional compound air intake control device; It is characterized in that: multi-functional compound air intake control device vertical ground is provided with, and forms angle between the cooling tower circle diameter.
2. the multi-functional compound air intake control device of reverse-flow cooling stack as claimed in claim 1 is characterized in that: this multi-functional compound air intake control device is arranged on the triangle air inlet place that forms between two chevron shaped pillars.
3. the multi-functional compound air intake control device of reverse-flow cooling stack as claimed in claim 1 is characterized in that: this angle is 0 ~ 45 degree.
4. the multi-functional compound air intake control device of reverse-flow cooling stack as claimed in claim 3 is characterized in that: the quantity of wind deflector is 0.25,0.5,0.75 or 1.0 times of chevron shaped pillar quantity; Wind deflector evenly is arranged on the triangle air inlet place that forms between adjacent two chevron shaped pillars around cooling tower air intake circumference.
5. the multi-functional compound air intake control device of reverse-flow cooling stack as claimed in claim 3; It is characterized in that: this wind deflector is that rhombus is dull and stereotyped; The acute angle of rhombus is 75 ~ 80 degree, and the wind deflector height is at 0.8 ~ 1.0 times of cooling tower air inlet height, and the thickness of wind deflector is 150 ~ 300mm; Two hypotenuse roundings, its radius are 75 ~ 175mm.
6. the multi-functional compound air intake control device of reverse-flow cooling stack as claimed in claim 3; It is characterized in that: this wind deflector is square wind deflector, short long rectangle wind deflector or high short rectangle wind deflector; The thickness of wind deflector is 150 ~ 300mm; Two vertical edge roundings, its radius are 75 ~ 175mm.
7. the multi-functional compound air intake control device of reverse-flow cooling stack as claimed in claim 3; It is characterized in that: this wind deflector is inverted right-angled trapezium, and long limit is the top air intake of wind deflector in two parallel edges, short limit and ground basic fixed; Right-angle side is the sidepiece air intake of wind deflector; Hypotenuse near and be parallel to the triangle air intake surface between adjacent two the chevron shaped pillars of cooling tower bottom air inlet circumference, trapezoidal acute angle is 75 ~ 80 degree, the thickness of wind deflector is 150 ~ 300mm; The right-angle side of wind deflector and hypotenuse rounding, its radius are 75 ~ 175mm.
8. like claim 6 or the multi-functional compound air intake control device of 7 described reverse-flow cooling stacks; It is characterized in that: the wind deflector height value is limited to 0.8 ~ 1.0 times of cooling tower air inlet height, and the length value of wind deflector is limited to 0.5 ~ 1.5 times of wind deflector height.
9. like claim 1, the multi-functional compound air intake control device of 2 or 3 described reverse-flow cooling stacks, it is characterized in that: this wind deflector is that the cross section is the rectangle wind deflector of aerofoil profile, and the wind deflector height value is at 0.8 ~ 1.0 times of cooling tower air inlet height; The cross section is a symmetrical airfoil; Wing chord length is 1.0 ~ 1.5 times of wind deflector height, and maximum relative thickness is 4% ~ 9%, and the relative position of maximum ga(u)ge is 30%; Leading-edge radius is 75 ~ 175mm, and trailing edge angle is no more than 30 °.
10. like claim 1, the multi-functional compound air intake control device of 2 or 3 described reverse-flow cooling stacks, it is characterized in that: also include deep bead or sound panel; This deep bead is arranged at two top air intake and/or sidepiece air intakes between the wind deflector; This sound panel is arranged at two sidepiece air intakes between the wind deflector.
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| CN103884200A (en) * | 2014-04-16 | 2014-06-25 | 山西科工龙盛科技有限公司 | Light-duty steel frame structure indirect air cooling tower capable of achieving water conservation and freeze protection |
| CN105004215A (en) * | 2015-07-16 | 2015-10-28 | 上海电力学院 | All-day and self-adaptation air inlet guiding system for thermal power plant cooling tower |
| CN105202938A (en) * | 2015-09-07 | 2015-12-30 | 中国矿业大学 | Novel air cooling tower |
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| CN107401933A (en) * | 2017-07-20 | 2017-11-28 | 国粤（深圳）科技投资有限公司 | circular counter-flow cooling tower |
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| CN105987487B (en) * | 2015-03-05 | 2019-02-26 | Tcl空调器(中山)有限公司 | The control method of air conditioner and air conditioner wind deflector |
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| CN105202938A (en) * | 2015-09-07 | 2015-12-30 | 中国矿业大学 | Novel air cooling tower |
| CN107401933A (en) * | 2017-07-20 | 2017-11-28 | 国粤（深圳）科技投资有限公司 | circular counter-flow cooling tower |
| CN107401933B (en) * | 2017-07-20 | 2020-01-03 | 国粤（深圳）科技投资有限公司 | Circular counter-flow cooling tower |
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| CN112484523A (en) * | 2020-11-18 | 2021-03-12 | 暨南大学 | Bottom water-receiving and flow field-enhanced wet cooling tower and cooling method |
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