CN203216311U - Water collection device for naturally-ventilated reverse flow cooling tower - Google Patents
Water collection device for naturally-ventilated reverse flow cooling tower Download PDFInfo
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- CN203216311U CN203216311U CN 201320193633 CN201320193633U CN203216311U CN 203216311 U CN203216311 U CN 203216311U CN 201320193633 CN201320193633 CN 201320193633 CN 201320193633 U CN201320193633 U CN 201320193633U CN 203216311 U CN203216311 U CN 203216311U
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Abstract
The utility model discloses a water collection device for a naturally-ventilated reverse flow cooling tower. The water collection device comprises a front water collection assembly, a rear water collection assembly, a left water collection assembly and a right water collection assembly, wherein water collection boards in all the water collection assemblies are all obliquely arranged at the periphery of a rain region. According to the water collection device, the airflow resistance of the rain region is reduced, the ventilation quantity of the cooling tower increases, the supply air rate of the central rain region can be improved, the operation efficiency of the cooling tower is finally improved, the temperature of water flowing out of the cooling tower can be lowered by 0.5-1.5 DEG C (wherein the temperature drop is small in summer and is big in winter), and the efficiency of a turbine in a power station is improved; taking a 1000MW set as an example, after the set runs for 5500 hours per year under a situation that the coal consumption does not increase, about 8250000 kilowatt hours of electricity can be additionally generated, and remarkable benefits can be gained each year, so that the water collection device has obvious economic value and significance.
Description
Technical field
The utility model belongs to fire/nuclear power field, relates to the generating efficiency that improves the power plant, specifically, is a kind of captation for the gravity-flow ventilation counterflow cooling tower.
Background technology
The gravity-flow ventilation counterflow cooling tower is a kind of evaporation-cooled device, is mainly used in fire/nuclear power field, for the cold junction of steamer motor provides low-temperature receiver.The efficient height of cooling tower (cooling tower go out the tower water temperature low), Efficiency of Steam Turbine just can improve, if the electricity of sending out same, the cooling tower coal that need burn is with regard to less efficiently, attenuating CO2 emission capable of saving fuel, but energy savings.The gravity-flow ventilation counterflow cooling tower is made up of tower tube 1, packing 2, water distribution system 3 and collecting-tank 4 etc., as shown in Figure 1.Hot water is sprayed at water on the end face of packing 2 through water distribution system 3 after entering cooling tower, carry out heat and mass with air, heat is passed to air, air themperature humidity increases, density reduces, and under the buoyancy of the atmospheric density difference inside and outside the tower, air is flowed into by air inlet, after the caloic exchange through rain belt 5, packing 2 and spray district 7, through tower tube 1 heat in the water is escaped to atmosphere again.The gas-flow resistance that the size of ventilation is directly proportional with density contrast with cooling tower is inversely proportional to; Wherein, spray district 7 accounts for 80% of whole cooling tower heat exchange amount with the heat exchange amount of packing 2, and rain belt 5 accounts for 20%.The resistance of cooling tower mainly comprises structure, rain belt 5 resistances and the outlet kinetic energy rejection that packing 2, air-flow turn to, tower is interior; Wherein, rain belt 5 resistances account for the about 40% of whole tower resistance, and the resistance of rain belt 5 is by laterally constituting with vertical resistance, and lateral resistance accounts for about 60% ［ 1,2 ］ of rain belt 5 resistances.Because the resistance of rain belt 5, it is low outer high in the air velocity of packing 2 sections forms in the cooling tower, therefore, improve gravity-flow ventilation counterflow cooling tower efficient, mainly improve packing 2 heat exchange efficiency, reduce the gas-flow resistance (or increase cooling tower ventilation) of cooling tower and improve the wind speed profile of packing 2 sections.At present the method that adopts has two kinds, and a kind of is means by numerical simulation, and the water distribution air distribution of cooling tower is optimized
［ 3,4 ］, mainly be adjust packing 2 in tower the layout height and the water discharge density of shower nozzle, can obtain about 0.1～0.3 ℃ cooling tower by various scheme optimizations and go out the tower water temperature and reduce; Second kind is to increase wind blade around cooling tower
［ 5 ］, this scheme only when having natural wind to influence, can be slowed down horizontal natural wind to the influence degree of cooling tower, during no natural wind, can not improve the distribution of the air of rain belt in the cooling tower, can not improve the efficient of cooling tower.
Above-mentioned two technology can be used for newly-built gravity-flow ventilation counterflow cooling tower optimal design and also can be used for having built up renovating of tower.First kind of technical scheme changed the gas-flow resistance distribution of cooling tower packing 2 sections, make moderate progress for the air distribution in the cooling tower, but owing to fail to be taken measures in the rain belt 5 that causes wind speed profile inhomogeneous (tower central area wind speed hangs down outskirt wind speed height) main cause in the cooling tower, so improvement is very limited.Second kind of technical scheme changed the air-inlet condition in cooling tower air inlet zone 7, in that being arranged, natural wind does the time spent, can slow down horizontal natural wind to the influence of the operational efficiency of cooling tower, when no natural wind, wind speed profile to packing 2 sections of cooling tower does not have influence substantially, more can not increase the ventilation in the cooling tower.Two schemes a common ground, do not pay close attention to about 40% the rain belt 5 that accounts for the cooling tower drag overall and how to reduce; Thereby, can not material alterations be arranged to the operational effect of cooling tower.Patent ZL201120254720.2 has proposed a ring diversion plate device scheme at the problems referred to above, have bigger effect for the efficient that improves cooling tower, but ring diversion plate implements certain degree of difficulty.
［ 1 ］, Zhao Zhenguo shows cooling tower, Chinese Water Conservancy water power publishing house, in June, 1997
［ 2 ］, Zhao Shunan shows seawater cooling tower, Chinese Water Conservancy water power publishing house, in January, 2007
［ 3 ］, Zhao Shunan etc., reverse-flow cooling stack Two-dimensional numerical simulation optimal design, water conservancy journal, 2003 years the 10th phases
［ 4 ］, Huang Dongtao etc., the numerical optimization design that counterflow cooling tower filler and trickle distribute, the applied mechanics journal, 2000,17(1), P.102-109
［ 5 ］, Xu Shiqian etc., the numerical simulation of water-cooling tower air-swirl guiding device, Peking University's journal (natural science edition), 2011 year first phase
Summary of the invention
In order to address the above problem, the present invention proposes a kind of captation for the gravity-flow ventilation counterflow cooling tower, comprises the place ahead catchment assembly, rear catchment assembly, left catchment assembly, the right-hand assembly that catchments.
Making two orthogonal longitudinal sections of cooling tower is section A and cross section B, and the both sides of section A are respectively the cooling tower fore-and-aft direction, and the both sides of cross section B are respectively the cooling tower left and right directions; Thus, be provided with the place ahead assembly and rear assembly that catchments that catchments in the bilateral symmetry of section A; The bilateral symmetry of cross section B is provided with left catchment assembly and the right-hand assembly that catchments; Described the place ahead assembly, rear assembly that catchments that catchments constitutes by n water collection sheet; Catchment assembly and the right-hand assembly that catchments of left constitutes by m water collection sheet;
What described the place ahead catchmented that assembly, rear catchment that assembly, left catchment each water collection sheet in assembly and the right-hand assembly that catchments is arranged in peripheral place, rain belt; And the place ahead catchment assembly, left of assembly, rear that catchment catchments that each water collection sheet all is obliquely installed in assembly and the right-hand assembly that catchments, and m, n are even number.
Advantage of the present utility model is:
1, the utility model a kind of in the low level energy-efficient gravity-flow ventilation counterflow cooling tower that catchments, by being obliquely installed water collection sheet in the periphery, district of drenching with rain, trickle in the district of drenching with rain is fallen on each water collection sheet, make the water collection sheet below drench with rain and to drop along water collection sheet, can form and the center straight-through no rain passage in district of drenching with rain, thereby reduce the gas-flow resistance of rain belt, increase the ventilation of cooling tower, the intake of rain belt, center can be improved, and finally improves the operational efficiency of cooling tower;
2, the utility model a kind of in the low level water collection sheet set-up mode that catchments in the energy-efficient gravity-flow ventilation counterflow cooling tower simple, cost is low.
Description of drawings
Fig. 1 is common gravity-flow ventilation counterflow cooling tower schematic diagram;
Fig. 2 is the component mounting position schematic top plan view of catchmenting in the utility model gravity-flow ventilation counterflow cooling tower;
Fig. 3 is the utility model gravity-flow ventilation counterflow cooling tower mounting means schematic diagram;
Fig. 4 lifts the mode schematic diagram for the assembly that catchments in the utility model gravity-flow ventilation counterflow cooling tower by connector.
Among the figure:
1-tower tube 2-packing 3-water distribution system 4-collecting-tank
5-rain belt 6-spray district 7-section A 8-cross section B
The 9-water collection sheet 10-connector 701-assembly 702-rear assembly that catchments that catchments in the place ahead
The 801-left right-hand assembly that catchments of assembly 802-that catchments
The specific embodiment
A kind of captation for the gravity-flow ventilation counterflow cooling tower of the utility model comprises the place ahead catchment assembly 701, rear catchment assembly 702, left catchment assembly 801, the right-hand assembly 802 that catchments.
Make that two orthogonal longitudinal sections of cooling tower are section A 7 and cross section B8, the both sides of section A 7 are respectively the cooling tower fore-and-aft direction, and the both sides of cross section B8 are respectively the cooling tower left and right directions; Thus, be provided with the place ahead assembly 701 and rear assembly 702 that catchments that catchments in the bilateral symmetry of section A 8; The bilateral symmetry of cross section B8 is provided with left catchment assembly 801 and the right-hand assembly 802 that catchments, as shown in Figure 2.
Described the place ahead assembly 701, rear assembly 702 that catchments that catchments constitutes by n rectangle water collection sheet 9; Left catchments assembly 801 and the right-hand assembly 802 that catchments by m rectangle water collection sheet 9 formations; And the place ahead assembly 701, rear catchment each water collection sheet 9 in assembly 801 and the right-hand assembly 802 that catchments of assembly 702, left that catchments that catchments can be connected with the support column that had in the cooling tower, or end face is fixedly set on the bottom supporting framework of packing area by connector 10, thereby realizes each water collection sheet 9 fixing in rain belt 5; And what the place ahead catchmented that assembly 701, rear catchment that assembly 702, left catchment each water collection sheet 9 in assembly 801 and the right-hand assembly 802 that catchments is arranged in 5 peripheral places, rain belt.Above-mentioned water collection sheet 9 materials can adopt concrete, glass epoxy, PVC plastic plate or color steel etc. to have the hard plate of rigidity, and purpose is under the effect of the whereabouts of drenching with rain, and does not have big distortion, avoids influencing air intake.Connector 10 can adopt metal or the nonmetallic materials of the rigidity with certain intensity, also can adopt metal or nonmetal rope material, can be more definite according to economy.
N water collection sheet 9 five equilibriums in the assembly 701 are catchmented in the both sides of cross section B10 in above-mentioned the place ahead, (be that n is even number, the both sides of cross section B8 have catchment water collection sheet 9 in the assembly 701 of n/2 the place ahead respectively), and make the place ahead that is arranged in B8 both sides, cross section catchment water collection sheet 9 tops or the bottom relative tilt of assembly 701, with horizontal plane angle α be 30 °～45 °, and the top margin of adjacent two water collection sheets 9 or base spacing are H, and H is 2m～4m.
Left catchments m water collection sheet 9 five equilibriums in the assembly 801 in the both sides of section A 7, (be that m is even number, the both sides of section A 7 have catchment water collection sheet 9 in the assembly 801 of m/2 left respectively), and make the left that is arranged in section A 7 both sides catchment water collection sheet 9 tops or the bottom relative tilt of assembly 801, with horizontal plane angle be α, and the top margin of adjacent two water collection sheets 9 or base spacing are H.
Assembly 702, the right-hand assembly 802 that catchments are symmetrical arranged with the place ahead assembly 701 and left assembly 801 that catchments that catchments respectively owing to catchment in the rear, so its set-up mode and the place ahead assembly 701 and left assembly 801 that catchments that catchments arranges identical.In the above-mentioned set-up mode, with m=n, and the water collection sheet inclination angle is 45 °, and the adjacent distance between plates of catchmenting is the 2m optimum.
Above-mentioned the place ahead catchment assembly 702, left of assembly 701, rear that catchment catchments that the facade length of each water collection sheet 9 is H * tg (α) in assembly 801 and the right-hand assembly 802 that catchments; And the top margin of each water collection sheet is 1/3 of air inlet height apart from air inlet end face spacing L, and the base is positioned at collecting-tank top, looks setting angle and spacing is determined.Also can increase denoising device or acoustic damping materials at water collection sheet in the utility model, can reduce the noise of cooling tower.
Claims (5)
1. captation that is used for the gravity-flow ventilation counterflow cooling tower is characterized in that: comprise the place ahead catchment assembly, rear catchment assembly, left catchment assembly, the right-hand assembly that catchments;
Making two orthogonal longitudinal sections of cooling tower is section A and cross section B, and the both sides of section A are respectively the cooling tower fore-and-aft direction, and the both sides of cross section B are respectively the cooling tower left and right directions; Thus, be provided with the place ahead assembly and rear assembly that catchments that catchments in the bilateral symmetry of section A; The bilateral symmetry of cross section B is provided with left catchment assembly and the right-hand assembly that catchments; Described the place ahead assembly, rear assembly that catchments that catchments constitutes by n water collection sheet; Catchment assembly and the right-hand assembly that catchments of left constitutes by m water collection sheet; M and n are even number;
What described the place ahead catchmented that assembly, rear catchment that assembly, left catchment each water collection sheet in assembly and the right-hand assembly that catchments is arranged in peripheral place, rain belt; And the place ahead catchment assembly, left of assembly, rear that catchment catchments that each water collection sheet all is obliquely installed in assembly and the right-hand assembly that catchments.
2. a kind of captation for the gravity-flow ventilation counterflow cooling tower according to claim 1 is characterized in that: described the place ahead assembly, rear assembly, left support column that has had in each water collection sheet and cooling tower in assembly and the right-hand assembly that catchments that catchments that catchments that catchments is connected.
3. a kind of captation for the gravity-flow ventilation counterflow cooling tower according to claim 1 is characterized in that: described the place ahead catchment assembly, left of assembly, rear that catchment catchments that each water collection sheet end face is fixedly set on the bottom supporting framework of packing area by connector in assembly and the right-hand assembly that catchments.
4. a kind of captation for the gravity-flow ventilation counterflow cooling tower according to claim 1, it is characterized in that: described water collection sheet is the rectangle water collection sheet.
5. a kind of captation for the gravity-flow ventilation counterflow cooling tower according to claim 1 is characterized in that: denoising device or acoustic damping materials are installed on the described water collection sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320193633 CN203216311U (en) | 2013-04-17 | 2013-04-17 | Water collection device for naturally-ventilated reverse flow cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320193633 CN203216311U (en) | 2013-04-17 | 2013-04-17 | Water collection device for naturally-ventilated reverse flow cooling tower |
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| Publication Number | Publication Date |
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| CN203216311U true CN203216311U (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320193633 Expired - Lifetime CN203216311U (en) | 2013-04-17 | 2013-04-17 | Water collection device for naturally-ventilated reverse flow cooling tower |
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| CN (1) | CN203216311U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062938A (en) * | 2017-04-27 | 2017-08-18 | 北京百度网讯科技有限公司 | Cooling tower |
| CN107300338A (en) * | 2017-07-20 | 2017-10-27 | 国粤（深圳）科技投资有限公司 | High-order water collector for cooling tower |
| US9976810B2 (en) | 2015-10-01 | 2018-05-22 | Pacific Airwell Corp. | Water recovery from cooling tower exhaust |
| CN109506489A (en) * | 2018-11-26 | 2019-03-22 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of air-guiding high position receipts water cooling tower |
| CN109708488A (en) * | 2019-01-08 | 2019-05-03 | 山东大学 | A kind of New type wet cooling tower of inside and outside coordination optimization air inlet |
-
2013
- 2013-04-17 CN CN 201320193633 patent/CN203216311U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9976810B2 (en) | 2015-10-01 | 2018-05-22 | Pacific Airwell Corp. | Water recovery from cooling tower exhaust |
| CN107062938A (en) * | 2017-04-27 | 2017-08-18 | 北京百度网讯科技有限公司 | Cooling tower |
| CN107062938B (en) * | 2017-04-27 | 2019-07-09 | 北京百度网讯科技有限公司 | Cooling tower |
| CN107300338A (en) * | 2017-07-20 | 2017-10-27 | 国粤（深圳）科技投资有限公司 | High-order water collector for cooling tower |
| CN109506489A (en) * | 2018-11-26 | 2019-03-22 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of air-guiding high position receipts water cooling tower |
| CN109506489B (en) * | 2018-11-26 | 2024-02-06 | 中国电力工程顾问集团西北电力设计院有限公司 | Air guide type high-level water receiving cooling tower |
| CN109708488A (en) * | 2019-01-08 | 2019-05-03 | 山东大学 | A kind of New type wet cooling tower of inside and outside coordination optimization air inlet |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |