CN102155850A - Direct air cooling island windbreak deflecting device for power station - Google Patents
Direct air cooling island windbreak deflecting device for power station Download PDFInfo
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- CN102155850A CN102155850A CN 201110116639 CN201110116639A CN102155850A CN 102155850 A CN102155850 A CN 102155850A CN 201110116639 CN201110116639 CN 201110116639 CN 201110116639 A CN201110116639 A CN 201110116639A CN 102155850 A CN102155850 A CN 102155850A
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Abstract
The invention relates to a direct air cooling island windbreak deflecting device for a power station, which comprises windbreak deflecting nets, a fixed support rod and an adjustment rope, wherein the fixed support rod and the adjustment rope are fixedly mounted between the lower edge of an air cooling island platform and the ground respectively, the fixed support rod is positioned at the inner side of the adjustment rope, the windbreak deflecting net is composed of a porous netting sheet and side frames, a plurality of windbreak deflecting nets are distributed between the fixed support rod and the adjustment rope in a vertically layered manner, one end of each of the windbreak deflecting nets is fixed on the support rod while the other end of the windbreak deflecting net is fixed on the adjustment rope, the angle of inclination of the windbreak deflecting nets is adjusted by pulling the adjustment rope up and down, so that the direction of environmental wind from the outer side of the air cooling island is changed from downward slope to upward slope, therefore, the device plays the role of defecting the environmental wind, increases the pressure in a negative pressure area, raises the flow rate of cooling air from air cooling units at the periphery of the environmental wind, reduces the hot air reflux, improves the heat exchange characteristic of the air cooling condenser, and has no impact on air flow of internal air cooling units, so as to enhance the operating safety and economical efficiency of air cooling unit.
Description
Technical field
The invention belongs to the energy source and power technical field, the windproof guiding device in particularly a kind of power station direct air-cooling island.
Background technology
In northern China, can near coal-mine power plant location water resource be seriously deficient, especially be difficult to more bear big water consumption in dry season, thereby have influence on the problem that build power plant.Direct Air-Cooling Technology, because the water saving characteristics that it is outstanding, can solve the bottleneck problem of water resource well, the used Direct Air-Cooled of this technology island comprises tens air cooling blower fans by column-row arrangement, utilizes surrounding air that direct air cooled condenser is carried out forced-convection heat transfer.Facts have proved that direct air cooled condenser heat exchange effect very easily is subjected to the external environment factor affecting, main cause is that ambient wind can cause the direct air cooled condenser heat exchange to worsen, and influences the safety and the economy operation on Direct Air-Cooled island.Ambient wind is one of research air cooling technique problem demanding prompt solution to the influence on Direct Air-Cooled island.
There are some researches show that surroundings wind field is unfavorable for the air draught of air cooling blower fan, and ambient wind velocity is big more, ambient wind is big more to the influence of blower fan suction air volume, and is also big more to direct air cooled condenser heat exchange influential effect.Existing air cooling system can suppress the harmful effect and the hot air reflux phenomenon of ambient wind to a certain extent usually at platform top, air cooling island installing windbreak; But under the bigger situation of ambient wind, the zone that facings the wind of air cooling island platform below can form negative pressuren zone, and the suction air volume of this air cooling unit, zone blower fan is obviously reduced, even air occurs and pour in down a chimney phenomenon.The method that can take is below the platform of air cooling island guiding device to be installed, as application number is the Chinese patent disclosed " installing the power station direct air-cooling condenser of air intake guide device additional " of 200610040699.X, it comprises heat-exchanging tube bundle, windbreak (1), blower fan group (2), steel structure platform (3) and column (4), steel structure platform (3) upwards is connected on the column (4), heat-exchanging tube bundle and blower fan group (2) are arranged on the steel structure platform (3), blower fan group (2) is arranged in the heat-exchanging tube bundle below, windbreak (1) vertically upwards is arranged in the periphery of steel structure platform (3), steel structure platform (3) periphery of its windbreak (1) below vertically is furnished with air intake guide device (5) downwards, be used to change the direction that air enters the peripheral blower fan suction inlet of air cooling tubes condenser, make harmful natural wind become useful natural wind, improve the performance of air cooling tubes condenser.Described air intake guide device (5) is made up of blade (5.1), coupled connecting rod (5.2) and the control lever (5.3) that can move up and down.It can improve the facing the wind intake of regional blower fan of periphery, air cooling island.But the blade of installing on the air cooling island (5.1) is negligible amounts (Fig. 5), and there is negative pressure region at blade (5.1) rear, make ambient wind the whirlwind backflow phenomenon occur at the guide vane rear, worsened the flow field of inner air cooling blower fan unit, reduced the intake of the inner blower fan in air cooling island, ambient wind reduces this problem of air cooling system suction air volume and fails all the time to obtain effectively thoroughly to solve.It uses a control lever (5.3) in addition, easily makes blade (5.1) mass motion during adjusting, and the angular range of adjusting is limited, the water conservancy diversion deleterious; Blade (5.1) two summits are unfixing, easily swing when ambient wind is big, influence the water conservancy diversion effect; In addition, do not provide the adjusting angle scope of blade (5.1) and the vertical distance of adjacent blades (5.1) in the document yet.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, it is reasonable to propose a kind of structure, be connected firmly, regulative mode is flexible, surroundings wind field is played guide functions, effectively improve the peripheral blower fan intake in air cooling island, do not influence the inner blower fan intake in air cooling island, weaken the harmful effect of ambient wind, improve the windproof guiding device in power station direct air-cooling island of unit operation security and economy Direct Air-Cooled unit, air cooling island heat transfer characteristic.
The technical scheme that the present invention solves the problems of the technologies described above employing is: the windproof guiding device in a kind of power station direct air-cooling island, it is arranged in periphery, air cooling island vertically downward, be installed between platform below, air cooling island and the ground, it is characterized in that: it comprises windproof water conservancy diversion net, fixed support bar and regulates rope, fixed support bar and adjusting rope are fixed on respectively between air cooling island platform lower edge and the ground, the fixed support bar is positioned at regulates the rope inboard, windproof water conservancy diversion net is made up of porous net sheet and frame, and porous net sheet is fixed on the quadrangle frame.The some online lower leafs of windproof water conservancy diversion are arranged between fixed support bar and the adjusting rope, wherein two angles, frame the inside and fixed support bar are connected and fixed, two angles, frame outside are connected with the adjusting rope, according to change of wind velocity, regulate the angle of inclination that rope is adjusted windproof water conservancy diversion net by lifting up and down.
Porous net sheet of the present invention is woven by nylon rope, and the nylon rope diameter is 0.2 ~ 1cm, and porous net sheet aperture is between 12 ~ 36 orders.
Windproof water conservancy diversion net of the present invention lateral has a down dip, and the angle of inclination is between level and downward 45 °.
The online lower floor of windproof water conservancy diversion of the present invention interlamellar spacing is 1.5 ~ 2m, and the about width of windproof water conservancy diversion net is between 2 ~ 3m.
The adjusting of the present invention end of restricting is fixed according to adjusting position, and the other end is regulated by manual or electric device.
Mounting arrangements of the present invention is below the platform of air cooling island and between the ground, regulate the angle of inclination of water conservancy diversion net according to change of wind velocity, make ambient wind wind direction from the outside, air cooling island by becoming under oblique obliquely, wind speed is high more, the inclination angle is big more, windproof water conservancy diversion wire side level when calm.The invention has the advantages that, under the ambient wind velocity condition,, change the wind direction of ambient wind by changing the angle of the windproof guiding device in power station direct air-cooling island, make ambient wind wind direction from the air cooling island outside by becoming under oblique obliquely, ambient wind is played guide functions; Can reduce simultaneously the ambient wind kinetic energy of air cooling island platform lower, transverse motion, weaken the negative pressure region negative pressure, improve the air inflow of ambient wind outer peripheral areas air cooling unit cooling air, reduce hot air reflux, improve these air cooling unit heat transfer characteristics; Reduced the influence of ambient wind, improved the security and the economy of unit operation the peripheral air cooling blower fan service behaviour in air cooling island.Regulative mode of the present invention is flexible, and windproof water conservancy diversion net is connected firmly, and ambient wind can not blown windproof water conservancy diversion net; Air cooling island platform has all carried out water conservancy diversion to the air on ground down, is improving peripheral blower fan intake simultaneously, can the blower fan of inner air cooling unit, air cooling island not had a negative impact.
Description of drawings
The present invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the user mode schematic diagram of ambient wind of the present invention when the right side blows.
Fig. 2 is the enlarged diagram of the local A of Fig. 1.
Fig. 3 is a confined state schematic diagram under the calm condition of the present invention.
Fig. 4 is the user mode schematic diagram of ambient wind of the present invention when the left side blows.
Fig. 5 is the airflow field schematic diagram that the guide vane ambient wind is installed on the power station direct air-cooling island in the background technology.
Fig. 6 is the airflow field schematic diagram of the present invention's ambient wind when using.
Label among the figure is: 1. windbreak, and 2. air cooling blower fan, 3. windproof water conservancy diversion net, 31. porous net sheets, 32. frames, 4. pillar, 5. air cooling island platform, 6. ground, 7. the fixed support bar is 8. regulated rope.
The specific embodiment
From Fig. 1, Fig. 3, Fig. 4 as can be seen, the windproof guiding device in a kind of power station direct air-cooling island, it is arranged in periphery, air cooling island (not comprising steam turbine building one side, as follows) vertically downward, below the air cooling island platform 5 and between the ground 6.Air cooling island platform 5 supports by some pillars 4, and air cooling blower fan 2 is installed on the air cooling island platform 5.Windbreak 1 is an enclosure wall, is contained in the upper outside of air cooling island platform 5.Wind direction is expressed as respectively and blows from the right side and blow from the left side among Fig. 1, Fig. 4.
Fig. 1 is the user mode schematic diagram of ambient wind of the present invention when the right side blows, and Fig. 2 is the enlarged diagram of the local A of Fig. 1.As Fig. 1, shown in Figure 2, the windproof guiding device in a kind of power station direct air-cooling island, it is arranged in periphery, air cooling island vertically downward, below the air cooling island platform 5 and between the ground 6, it mainly comprises windproof water conservancy diversion net 3, fixed support bar 7 and adjusting rope 8, fixed support bar 7 and adjusting rope 8 vertically are fixed on respectively between air cooling island platform 5 lower edges and the ground 6, fixed support bar 7 is positioned at regulates rope 8 inboards, windproof water conservancy diversion net 3 is made up of porous net sheet 31 and frame 32, some windproof water conservancy diversion nets about in the of 3 layered arrangement at fixed support bar 7 with regulate between the rope 8, wherein two angles, frame 32 the insides and two fixed support bars 7 are connected and fixed, two angles, frame 32 outsides are connected with two adjusting ropes 8, according to change of wind velocity, regulate the angle of inclination that rope is adjusted windproof water conservancy diversion net by lifting up and down.
The present invention regulates rope 8 and is steel wire rope, regulates the difference of rope 8 lower ends according to adjusting position, is fixed on the ground 6; Regulate rope 8 upper ends for two and drive, reach the purpose of regulating windproof water conservancy diversion net 3 angles of inclination by two ropewinders.Ropewinder can move in the horizontal direction by control device when rolling.Windproof water conservancy diversion net 3 is undertaken up and down by adjusting rope and ropewinder and moves horizontally.Windproof water conservancy diversion net of the present invention 3 laterals have a down dip, and the angle of inclination is between level and downward 45 °.Windproof water conservancy diversion net 3 angles of inclination determine that according to the size of ambient wind velocity the angle of inclination has a down dip between 45 ° to windproof water conservancy diversion net lateral at 0 °.
The distance of windproof water conservancy diversion net 3 levels interlayers of the present invention is 1.5 ~ 2m, and the about width of windproof water conservancy diversion net 3 is between 2 ~ 3m.Porous net sheet 31 of the present invention is by the nylon rope braiding, and the nylon rope diameter is 0.2 ~ 5cm, and porous net sheet 31 apertures are between 12 ~ 36 orders, and porous net sheet 31 is fixed on the quadrangle frame 32.
When the present invention used, when wind speed was 0m/s, just under calm condition, as shown in Figure 3, windproof water conservancy diversion net 3 was in level, can make the heat exchange of direct air cooled condenser not have negative effect like this.When wind speed during greater than 0m/s, utilize and regulate the angle of inclination that rope 8 is regulated the windproof water conservancy diversion net 3 of the direction of the wind comes from, wind speed is big more, and the angle of windproof water conservancy diversion net and horizontal plane is big more.Fig. 1 is the user mode schematic diagram of ambient wind when the right side blows.As shown in Figure 1, only regulate the windproof water conservancy diversion net 3 on right side, the windproof water conservancy diversion net in left side keeps level; Fig. 4 is the user mode schematic diagram of ambient wind when the left side blows, and under this state, only regulates the windproof water conservancy diversion net 3 in left side.
Fig. 5 is the airflow field schematic diagram that the guide vane ambient wind is installed on the power station direct air-cooling island in the background technology.As shown in Figure 5, there is negative pressure region, makes ambient wind the whirlwind backflow phenomenon occur, worsened the flow field of inner air cooling blower fan unit, reduced the intake of the inner submarginal some air cooling blower fans in air cooling island at the guide vane rear at the blade rear.
Mounting arrangements of the present invention is regulated the angle of inclination of water conservancy diversion net according to change of wind velocity below the platform of air cooling island and between the ground, make ambient wind wind direction from the outside, air cooling island by becoming under oblique obliquely, and wind speed is high more, and the inclination angle is big more.Fig. 6 is the airflow field schematic diagram of the present invention's ambient wind when using.As shown in Figure 6, the present invention plays guide functions to ambient wind.Can reduce simultaneously the ambient wind kinetic energy of air cooling island platform lower, transverse motion, weaken the negative pressure region negative pressure, improve the air inflow of ambient wind outer peripheral areas air cooling unit cooling air, reduce hot air reflux, improve these air cooling unit heat transfer characteristics, improve the security and the economy of unit operation, can the blower fan of inner air cooling unit, air cooling island not had a negative impact simultaneously.
Regulative mode of the present invention is flexible, and windproof water conservancy diversion net is connected firmly, and ambient wind can not blown windproof water conservancy diversion net; Air cooling island platform has all carried out water conservancy diversion to the air on ground down, is improving peripheral blower fan intake simultaneously, can the blower fan of inner air cooling unit, air cooling island not had a negative impact.
Claims (5)
1. windproof guiding device in power station direct air-cooling island, it is arranged in periphery, air cooling island vertically downward, be installed between platform below, air cooling island and the ground, it is characterized in that: it comprises windproof water conservancy diversion net, fixed support bar and regulates rope, fixed support bar and adjusting rope are fixed on respectively between air cooling island platform lower edge and the ground, the fixed support bar is positioned at regulates the rope inboard, and windproof water conservancy diversion net is made up of porous net sheet and frame, and porous net sheet is fixed on the quadrangle frame.The some online lower leafs of windproof water conservancy diversion are arranged between fixed support bar and the adjusting rope, wherein two angles, frame the inside and fixed support bar are connected and fixed, two angles, frame outside are connected with the adjusting rope, according to change of wind velocity, regulate the angle of inclination that rope is adjusted windproof water conservancy diversion net by lifting up and down.
2. according to the windproof guiding device in the described power station direct air-cooling of claim 1 island, it is characterized in that described porous net sheet is woven by nylon rope, the nylon rope diameter is 0.2 ~ 5cm, and porous net sheet aperture is between 12 ~ 36 orders.
3. according to the windproof guiding device in the described power station direct air-cooling of claim 1 island, it is characterized in that described windproof water conservancy diversion net lateral has a down dip, the angle of inclination is between level and downward 45 °.
4. according to the windproof guiding device in the described power station direct air-cooling of claim 1 island, it is characterized in that the online lower floor of described windproof water conservancy diversion interlamellar spacing is 1.5 ~ 2m, the about width of windproof water conservancy diversion net is between 2 ~ 3m.
5. according to the windproof guiding device in the described power station direct air-cooling of claim 1 island, it is characterized in that regulating rope one end and fix, the other end is regulated by manual or electric device.
Priority Applications (1)
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CN 201110116639 CN102155850B (en) | 2011-05-06 | 2011-05-06 | Direct air cooling island windbreak deflecting device for power station |
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CN 201110116639 CN102155850B (en) | 2011-05-06 | 2011-05-06 | Direct air cooling island windbreak deflecting device for power station |
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CN102155850A true CN102155850A (en) | 2011-08-17 |
CN102155850B CN102155850B (en) | 2012-07-25 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102788527A (en) * | 2012-09-09 | 2012-11-21 | 李尚勇 | Water tower wind board |
CN102997706A (en) * | 2012-12-28 | 2013-03-27 | 山西尚风科技股份有限公司 | Anti-wind device improving heat exchange capability of direct air-cooling unit |
CN103134380A (en) * | 2011-11-23 | 2013-06-05 | 王卫良 | Management and utilization system of environmental wind of cooling tower |
CN103134340A (en) * | 2011-11-23 | 2013-06-05 | 王卫良 | Inlet air management device of air cooling island environmental wind management utilization system |
CN103134341A (en) * | 2011-11-23 | 2013-06-05 | 王卫良 | Air cooling tower environmental wind management utilization system |
CN103148709A (en) * | 2013-03-20 | 2013-06-12 | 北京奇点时空科技发展有限公司 | Windproof device of direct air-cooling system, windproof control system and windproof control method |
CN103940253A (en) * | 2014-04-04 | 2014-07-23 | 中国能源建设集团广东省电力设计研究院 | Wind guide device and direct air cooling system provided with same |
CN111895802A (en) * | 2020-07-20 | 2020-11-06 | 内蒙古工业大学 | Diversion pressurization downward extension wind-break wall applied to direct air cooling platform |
CN112275633A (en) * | 2020-10-13 | 2021-01-29 | 湖南谊诚科技有限公司 | Prevent wind formula food level sodium metabisulfite production and use filtration equipment |
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CN101377387A (en) * | 2008-09-11 | 2009-03-04 | 金坛市塑料厂 | Noise reducing and anti-freezing device outside power plant cooling tower |
CN101581544A (en) * | 2009-06-08 | 2009-11-18 | 华北电力大学 | Shutter type environmental wind guiding device of air cooling island of power plant |
CN202074846U (en) * | 2011-05-06 | 2011-12-14 | 哈尔滨工业大学(威海) | Wind-proof flow guide device for direct air cooling island of power plant |
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GB616032A (en) * | 1946-08-21 | 1949-01-14 | Northmet Power Company | Improvements in or relating to cooling towers and their operation |
DE2337236A1 (en) * | 1972-08-29 | 1974-03-14 | Transelektro Magyar Villamossa | MOVABLE OPENING LOCKING ELEMENTS FOR REDUCING THE WIND EFFECT IN COOLING SYSTEMS |
US4129625A (en) * | 1976-03-01 | 1978-12-12 | The Marley Company | Selectively controllable water curtain damper for inlet face of circular water cooling tower |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103134380A (en) * | 2011-11-23 | 2013-06-05 | 王卫良 | Management and utilization system of environmental wind of cooling tower |
CN103134340A (en) * | 2011-11-23 | 2013-06-05 | 王卫良 | Inlet air management device of air cooling island environmental wind management utilization system |
CN103134341A (en) * | 2011-11-23 | 2013-06-05 | 王卫良 | Air cooling tower environmental wind management utilization system |
CN102788527A (en) * | 2012-09-09 | 2012-11-21 | 李尚勇 | Water tower wind board |
CN102997706A (en) * | 2012-12-28 | 2013-03-27 | 山西尚风科技股份有限公司 | Anti-wind device improving heat exchange capability of direct air-cooling unit |
CN103148709A (en) * | 2013-03-20 | 2013-06-12 | 北京奇点时空科技发展有限公司 | Windproof device of direct air-cooling system, windproof control system and windproof control method |
CN103940253A (en) * | 2014-04-04 | 2014-07-23 | 中国能源建设集团广东省电力设计研究院 | Wind guide device and direct air cooling system provided with same |
CN103940253B (en) * | 2014-04-04 | 2016-01-27 | 中国能源建设集团广东省电力设计研究院有限公司 | Air ducting and be provided with the direct air cooling system of this air ducting |
CN111895802A (en) * | 2020-07-20 | 2020-11-06 | 内蒙古工业大学 | Diversion pressurization downward extension wind-break wall applied to direct air cooling platform |
CN112275633A (en) * | 2020-10-13 | 2021-01-29 | 湖南谊诚科技有限公司 | Prevent wind formula food level sodium metabisulfite production and use filtration equipment |
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