CN103335536B - Anti-wind device of air cooling island of direct air cooling unit - Google Patents
Anti-wind device of air cooling island of direct air cooling unit Download PDFInfo
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- CN103335536B CN103335536B CN201310306576.6A CN201310306576A CN103335536B CN 103335536 B CN103335536 B CN 103335536B CN 201310306576 A CN201310306576 A CN 201310306576A CN 103335536 B CN103335536 B CN 103335536B
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Abstract
The invention relates to an anti-wind device of an air cooling island of a direct air cooling unit. The anti-wind device comprises a steel-frame structure, the lower part of the steel-frame structure is supported by an air cooling island support pillar, and the upper part of the steel-frame structure is provided with an air cooling island platform. The anti-wind device is characterized in that the anti-wind device is provided with an anti-wind net, and the anti-wind net is vertical to the ground and is arranged on the steel-frame structure. The anti-wind device can effectively reduce or eliminate the influence of environmental wind on the direct air cooling unit. In the process of strong wind flowing through the anti-wind device, as the wind speed is sharply decreased, the obvious eddy of coming wind is avoided, the range of a negative pressure area is shrunk, and the suction ability of a fan is increased. The air flow passing through the air cooling unit is increased, and hot-wind backflow is reduced or avoided, therefore the heat exchange efficiency of an air-cooling condenser is increased, the back pressure of a turbine is reduced, and the heat economy of a thermal power generating unit is increased.
Description
Technical field
The present invention relates to a kind of power plant for energy conservation device, especially for the Air-Cooling Island wind-proof device of power plant's Direct Air-cooled Unit.
Background technology
Air cooling island of direct air cooling unit be to steam turbine generator acting after steam carry out air-cooled cooling system, and the cooling tower functional similarity of traditional thermoelectricity, compared with traditional water-cooling system, the heat radiation of air cooling saves water than the heat radiation of the water tower that dries in the air.By the restriction of water resources shortage, Direct Air-cooled Unit obtains in the area of rich coal lack of water and develops faster.But ambient wind has larger impact to the safety of Direct Air-cooled Unit and economical operation.On the one hand, due to environment wind action, can produce negative pressuren zone near air cooling blower fan suction inlet, cause the air mass flow of air cooling unit to reduce, cooling effect is deteriorated; On the other hand, under ambient wind effect, the hot-air above Air-Cooling Island by the suction inlet again entrainmented into air cooling blower fan, forms hot air reflux phenomenon under the effect of negative pressure.Therefore, the air capacity that ambient wind not only makes blower fan suck reduces, and also improves the air themperature of suction, has had a strong impact on the heat exchange property of air cooling tubes condenser, condenser vacuum is significantly reduced.
Summary of the invention
The object of the invention is to the drawback for prior art, provide a kind of and can improve the air capacity that air cooling unit blower fan sucks, the air cooling island of direct air cooling unit wind-proof device reducing hot air reflux generation.
Problem of the present invention realizes with following technical proposals:
A kind of air cooling island of direct air cooling unit wind-proof device, it comprises steel frame construction, and steel frame construction bottom is supported by Air-Cooling Island support column, and steel frame construction top arranges Air-Cooling Island platform, special feature is: described wind-proof device is provided with anti-wind net, and anti-wind net is arranged on steel frame construction perpendicular to ground.
Above-mentioned air cooling island of direct air cooling unit wind-proof device, described anti-wind net is coated on steel frame construction periphery with " mouth " type, or anti-wind net is distributed to steel frame construction inside, or anti-wind net steel frame construction periphery with " mouth " type coated and steel frame construction inside distribution anti-wind net.
Above-mentioned air cooling island of direct air cooling unit wind-proof device, described anti-wind net is made up of interconnective windproof unit, each windproof unit comprises mesh sheet, guipure, frame, uniform mesh in described mesh sheet, mesh sheet periphery closes frame admittedly, described guipure lateral direction penetrating is in mesh sheet, and the horizontal frame of adjacent net pieces and each guipure end connect by being connected and fixed mechanism.
Above-mentioned air cooling island of direct air cooling unit wind-proof device, described anti-wind net is connected by being connected and fixed mechanism with between steel frame construction.
Above-mentioned air cooling island of direct air cooling unit wind-proof device, the mesh in described mesh sheet is circle, rhombus, rectangle, triangle.
The present invention is directed to and to solve near air cooling island of direct air cooling unit air cooling blower fan suction inlet because negative pressuren zone reduces air mass flow and hot air reflux problem is improved, devise a kind of wind-proof device being applied in air cooling island of direct air cooling unit.Described device can effectively weaken or eliminate the impact of ambient wind on Direct Air-cooled Unit, flows through in the process of wind-proof device at strong wind, because wind speed declines to a great extent, improves the suction capactity of blower fan, and making is increased by the air mass flow of air cooling unit.Through measuring and calculating, employing the present invention designs, when ambient airflow is through wind-proof device, flow velocity can decline more than 50% ~ 80%, can effectively reduce the negative pressuren zone below air cooling unit, and the spiral structure weakened in atmospheric turbulance, improve the air capacity that air cooling unit blower fan sucks, reduce or avoid the generation of hot air reflux, thus promote air cooling tubes condenser heat exchange efficiency, reduce turbine back pressure, improve the heat-economy of fired power generating unit.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is schematic diagram of the present invention;
Fig. 2-Fig. 5 is anti-wind net schematic layout pattern;
Fig. 6 is windproof cell schematics;
Fig. 7-Fig. 9 is mesh sheet schematic diagram;
Figure 10 is connected and fixed structural scheme of mechanism.
In figure, each list of reference numerals is: 1, Air-Cooling Island support column, 2, steel frame construction, 3, anti-wind net, 4, Air-Cooling Island platform, 5, windbreak, 6, air cooling unit, 7, mesh sheet, 8, guipure, 9, frame, 10, mechanism is connected and fixed, 10-1, bolt, 10-2, detent, 10-3, ratchet, 10-4, ratchet, 10-5, handle.
Detailed description of the invention
Referring to Fig. 1, air cooling island of direct air cooling unit relies on support column 1 to be supported in ground, and the steel frame construction 2 that support column 1 is installed is for supporting air cooling platform 4, and Air-Cooling Island platform 4 is provided with multiple air cooling unit 6, and Air-Cooling Island platform surrounding is provided with windbreak 5.For effectively weakening or eliminating the impact of ambient wind on Direct Air-cooled Unit, the suction capactity of air cooling blower fan under raising strong wind operating mode, Air-Cooling Island wind-proof device of the present invention is provided with anti-wind net 3, and anti-wind net is arranged on steel frame construction perpendicular to ground.Anti-wind net is fixed on steel frame construction, good protection effect can be played, again without the need to arranging support bar in addition, being convenient to the installation of anti-wind net, reducing investment outlay.
Referring to Fig. 2-Fig. 5, the layout of anti-wind net 3 can arrange in the following manner: 1, anti-wind net is coated on steel frame construction periphery with " mouth " type, as shown in Figure 2; 2, anti-wind net is distributed to steel frame construction inside, forms " ten " word as shown in Figure 3 or forms " well " word as shown in Figure 4; 3, anti-wind net steel frame construction periphery with " mouth " type coated and steel frame construction inside distribution anti-wind net, sphere of movements for the elephants shape as shown in Figure 5.The layout of anti-wind net, except shown in Fig. 2-Fig. 5, can also distribute according to modes such as "×" shape, stairsteppings in steel frame construction inside as required, not enumerate herein.Anti-wind net or interior or outer or inside and outside the layout type taken into account, both the windproof needs of Air-Cooling Island edge air cooling unit can have been met, also the needs that inside Air-Cooling Island, relevant air cooling unit is windproof can be met, to adapt to the requirement windproof under different cardinal wind of different Direct Air-cooled Unit.Anti-wind net is a kind of barrier of porous, a Ge Di wind speed district can be formed at its lee face, reduce incoming flow wind speed and the spiral structure weakened in atmospheric turbulance, when ambient airflow is through anti-wind net, flow velocity can decline more than 50% ~ 80%, thus can effectively reduce the negative pressuren zone below air cooling unit, and weaken the spiral structure in atmospheric turbulance, improve the air capacity that air cooling unit blower fan sucks, reduce the generation of hot air reflux.The thickness only 0.6 ~ 1.0mm of anti-wind net, quality is light, is convenient to installation and maintenance, without the need to control system in use procedure.
Referring to Fig. 6, anti-wind net 3 is made up of interconnective windproof unit.Each windproof unit comprises mesh sheet 7, guipure 8, frame 9.Uniform mesh in described mesh sheet, mesh sheet is made up of polyester material, there is PVC coating on surface, and mesh sheet adds anticorrisive agent, fire retardant etc. adding man-hour, makes it have long service life, intensity is high, environmental suitability is strong, duration of fire resistance is short, the feature such as uvioresistant, antistatic.Mesh sheet periphery closes frame 9 admittedly, between frame with mesh sheet adopt material identical with frame suturing with thread management together with, then spray corrosion-inhibiting coating.For increasing the intensity of windproof unit, be provided with the guipure 8 of lateral direction penetrating mesh sheet, guipure 8 and mesh sheet are closed admittedly, and the horizontal frame of mesh sheet and each guipure two ends arrange and are connected and fixed mechanism, by the anti-wind net being connected and fixed mechanism and several windproof unit combination being become specified arrangement.
Referring to Fig. 7-Fig. 9, the mesh in mesh sheet is the polygon of the rules such as rectangle, circle, rhombus or triangle, and the ventilative area of mesh sheet is 38%-45%.When wind speed is higher than 4-6 meter per second, significantly can reduces the rear wind speed of net, weaken the impact of ambient wind on air cooling blower fan performance, improve the ventilation of air cooling unit; When wind speed is lower than 3 meter per second, because the resistance of anti-wind net is less, the flowing resistance of air cooling blower fan can not be increased, make it still can keep higher ventilation.
Referring to Fig. 6, Figure 10, the length of windproof unit of the present invention can set according to the size of Air-cooled Unit steel frame construction to size, and the mechanism 10 that is connected and fixed of horizontal frame and guipure two ends that the connection between each windproof unit transverse and the fixing dependence between anti-wind net and steel frame construction are arranged on mesh sheet realizes.Tautness between mesh sheet can be changed by being connected and fixed mechanism, being therefore connected and fixed mechanism and there is connection, fastening and fixing triple role.The mechanism 10 that is connected and fixed of the present invention selects ratchet tightener (commercially available prod), and its formation comprises bolt 10-1, detent 10-2, ratchet 10-3,1 ratchet 10-4 and handle 10-5.Connect by being connected and fixed mechanism between two adjacent windproof unit, wherein, one end of one windproof unit transverse frame or guipure forms a ring body, be fixed on by bolt 10-1 and be connected and fixed mechanism, the horizontal frame of another windproof unit or one end of guipure are connected to and are connected and fixed on the ratchet 10-3 of mechanism, by reciprocating operation handle 10-5, drive ratchet 10-4 driving pawl to rotate, the horizontal frame of one windproof unit or guipure are wrapped on ratchet shaft, thus change the tautness between adjacent net pieces.Open detent 10-2, horizontal frame or guipure can be made to unload from ratchet.The load that fastening force when horizontal frame and guipure mainly bear windproof cell layout and strong wind are formed.
Claims (3)
1. an air cooling island of direct air cooling unit wind-proof device, it comprises steel frame construction (2), steel frame construction bottom is supported by Air-Cooling Island support column (1), steel frame construction top arranges Air-Cooling Island platform (4), it is characterized in that: described wind-proof device is provided with anti-wind net (3), and anti-wind net is arranged on steel frame construction perpendicular to ground;
Described anti-wind net (3) is coated on steel frame construction periphery with " mouth " type, or anti-wind net is distributed to steel frame construction inside, or anti-wind net steel frame construction periphery with " mouth " type coated and steel frame construction inside distribution anti-wind net;
Described anti-wind net (3) is made up of interconnective windproof unit, each windproof unit comprises mesh sheet (7), guipure (8), frame (9), uniform mesh in described mesh sheet, mesh sheet periphery closes frame admittedly, described guipure lateral direction penetrating is in mesh sheet, and the horizontal frame of adjacent net pieces and each guipure end connect by being connected and fixed mechanism (10);
Described mesh sheet is made up of polyester material, and there is PVC coating on surface.
2. air cooling island of direct air cooling unit wind-proof device according to claim 1, is characterized in that: described anti-wind net is connected by being connected and fixed mechanism (10) with between steel frame construction.
3. air cooling island of direct air cooling unit wind-proof device according to claim 2, is characterized in that: the mesh in described mesh sheet (7) is circle, rhombus, rectangle, triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306576.6A CN103335536B (en) | 2013-07-22 | 2013-07-22 | Anti-wind device of air cooling island of direct air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310306576.6A CN103335536B (en) | 2013-07-22 | 2013-07-22 | Anti-wind device of air cooling island of direct air cooling unit |
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| Publication Number | Publication Date |
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| CN103335536A CN103335536A (en) | 2013-10-02 |
| CN103335536B true CN103335536B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310306576.6A Expired - Fee Related CN103335536B (en) | 2013-07-22 | 2013-07-22 | Anti-wind device of air cooling island of direct air cooling unit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629944B (en) * | 2013-12-04 | 2015-10-21 | 华北电力大学（保定） | A kind of direct air cooled condenser air intake cooling diffusion diversion device |
| CN105783540A (en) * | 2016-04-19 | 2016-07-20 | 华北电力大学 | Mixing ventilation air-cooling condenser |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576765A (en) * | 2003-07-10 | 2005-02-09 | 巴尔克-迪尔有限公司 | Method and device for directing flow in air-cooled condenser systems |
| CN202709779U (en) * | 2012-07-24 | 2013-01-30 | 赵爽 | Movable wind shielding device of direct air-cooling system of power station |
| 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 |
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2013
- 2013-07-22 CN CN201310306576.6A patent/CN103335536B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576765A (en) * | 2003-07-10 | 2005-02-09 | 巴尔克-迪尔有限公司 | Method and device for directing flow in air-cooled condenser systems |
| CN202709779U (en) * | 2012-07-24 | 2013-01-30 | 赵爽 | Movable wind shielding device of direct air-cooling system of power station |
| 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 |
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