CN102353278B - Dry cooling tower integrated by natural ventilation and mechanical ventilation - Google Patents
Dry cooling tower integrated by natural ventilation and mechanical ventilation Download PDFInfo
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- CN102353278B CN102353278B CN 201110232953 CN201110232953A CN102353278B CN 102353278 B CN102353278 B CN 102353278B CN 201110232953 CN201110232953 CN 201110232953 CN 201110232953 A CN201110232953 A CN 201110232953A CN 102353278 B CN102353278 B CN 102353278B
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Abstract
The invention relates to a dry cooling tower integrated by natural ventilation and mechanical ventilation, the dry cooling tower comprises a tower body (1), blowers (2), radiators (3), an unsealed first partition wall (4) and a second partition wall (5), the blowers (2) are vertically or horizontally arranged in the tower body (1); the radiators (3) are vertically arranged outside the bottom of the tower body (1); the unsealed first partition wall (4) is provided in the tower body (1) and perpendicular to the ground, or the unsealed first partition wall (4) is provided in the tower body (1) and horizontally arranged over the blowers (2); the second partition wall (5) divides a number of blowers (2) and radiators (3) into a number of cooling units. The dry cooling tower is capable of selecting working modes of mechanical ventilation, natural ventilation or a combination of mechanical ventilation and natural ventilation according to the environmental temperature and heat load, integrating the advantages of small investment of mechanical ventilation and low operation cost of natural ventilation, and enhancing the frost resistance performance of radiator of the dry cooling tower in cold region under the low temperature environment.
Description
Technical field
The present invention relates to a kind of dry cooling tower, be mainly used in thermal power plant's indirect air cooling system.
Background technology
The indirect air cooling system in thermal power plant has obtained using widely.Dry cooling tower is the pith of indirect air cooling system, and what on engineering, use at present is the dry cooling tower of gravity-flow ventilation, and it mainly is made up of air cooling heat radiator and tower body.The dry cooling tower operation principle of gravity-flow ventilation is: air at first gets into and vertically is arranged in the air cooling heat radiator of the outer or horizontal arrangement of tower at tower bottom, carries out heat exchange with hot water in the radiator heat-transfer pipe; The temperature of air gets in the tower body after raising again, and the draft that utilizes tower body height and atmospheric density difference to be produced is then discharged the air after heating outside the tower through the top exit of tower body.The advantage of the dry cooling tower of gravity-flow ventilation is that operating cost is low, but its shortcoming is:
(1) external diameter of tower body and height dimension are big, and disposable cost of investment is high;
(2) under the winter low temperature environment of cold district, its radiator resistance to frost is relatively poor.
Jiang Zonglin etc. have proposed the indirect cooling system of mechanical draft in its disclosed patent (application number 200920110167.8), the dry cooling tower of this system belongs to the form of mechanical draft, and its advantage is to reduce the height of tower body.But because the cooling unit (being made up of blower fan and radiator etc.) that machine power (pressure) is ventilated all is arranged in outside the tower, needed floor space is big; In addition, it only uses with force ventilated form, does not make full use of the low advantage of operating cost of gravity-flow ventilation.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of floor space is little, the tower body height is low, operating cost is low, resistance to frost is good gravity-flow ventilation and the combined dry cooling tower of mechanical draft are provided.
The objective of the invention is to realize like this: the dry cooling tower that a kind of gravity-flow ventilation and mechanical draft are combined; Said cooling tower comprises tower body, blower fan, radiator, can open first partition wall and second partition wall; Said blower fan vertically is arranged in the inside of tower body, simultaneously saidly opens that first partition wall is positioned at tower body and perpendicular to ground; Or said horizontal fan is arranged in the inside of tower body, simultaneously said open first partition wall be positioned at tower body also level be installed in the top of blower fan, said second partition wall is divided into cooling unit one by one to the blower fan of some quantity and radiator.
The dry cooling tower that gravity-flow ventilation of the present invention and mechanical draft are combined, described first partition wall of opening is the shutter form, or the moving door form.
The dry cooling tower that gravity-flow ventilation of the present invention and mechanical draft are combined, described radiator vertically is arranged in the bottom outside of tower body.
The present invention uses like this: described when high and thermic load is big when environment temperature, all of closing tower body inside can be opened first partition wall, start all ventilation blowers, and dry cooling tower is worked with the mode of mechanical draft; When environment temperature low with thermic load hour, open inner all first partition walls of opening, stop all blower fans, dry cooling tower is then worked with the mode of gravity-flow ventilation; When environment temperature is higher can not satisfy the radiator heat burden requirement with natural ventilation system the time, can select the method for operation (being the combined mode of gravity-flow ventilation and the mechanical draft) work of part unit mechanical draft and the gravity-flow ventilation of part unit for use; When environment temperature is lower than 0 ℃ of radiator and need takes the anti-frost protection measure, close inner first partition wall of opening, and make the blower fan antiport of part unit, make hot-air in the tower oppositely realize the anti-frost protection of this radiator through radiator.
Major advantage of the present invention is:
(1) after the mode of employing mechanical draft, can increase air capacity, the coefficient of heat transfer of radiator and heat are increased, can reduce the appearance and size of heat exchange area with the cooling tower body of radiator, reduce the cost of investment of dry cooling tower through radiator;
(2) environment temperature low with thermic load hour, dry cooling tower is switched to natural ventilation system or part natural ventilation system, can reduce the energy consumption of system and reach purpose of energy saving;
(3) utilize the blower fan antiport of mechanical draft and the means that entering radiator air capacity is controlled, can improve the resistance to frost of radiator under low temperature environment.
Description of drawings
Fig. 1 is embodiment 1 front view (blower fan is vertical to be arranged) of the combined dry cooling tower of gravity-flow ventilation of the present invention and mechanical draft.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is embodiment 2 front views (horizontal fan layout) of the combined dry cooling tower of gravity-flow ventilation of the present invention and mechanical draft.
Fig. 4 is the vertical view of Fig. 3.
Reference numeral among the figure:
The specific embodiment
Embodiment 1:
Referring to Fig. 1 and Fig. 2, Fig. 1 is embodiment 1 front view (blower fan is vertical to be arranged) of the combined dry cooling tower of gravity-flow ventilation of the present invention and mechanical draft.Fig. 2 is the vertical view of Fig. 1.Can find out that by Fig. 1 and Fig. 2 the dry cooling tower that gravity-flow ventilation of the present invention and mechanical draft are combined comprises tower body 1, blower fan 2, radiator 3, can open first partition wall 4 and second partition wall 5.Said blower fan 2 vertically is arranged in the inside of tower body 1, is installed in certain height; Radiator 3 vertically is arranged in the bottom outside of tower body 1; Can open that first partition wall 4 is positioned at tower body 1 and perpendicular to ground; Second partition wall 5 is separated into cooling unit one by one to the blower fan 2 of some quantity with radiator 3.Open and can open first partition wall 4, stop blower fan 2, the present invention can be in the working method of gravity-flow ventilation; Close and can open first partition wall 4, start blower fan 2, dry cooling tower is then in the working method of mechanical draft.
Embodiment 2:
Referring to Fig. 3 and Fig. 4, Fig. 3 and shown in Figure 4 be an alternative embodiment of the invention, Fig. 3 is embodiment 2 front views (horizontal fan layout) of the combined dry cooling tower of gravity-flow ventilation of the present invention and mechanical draft.Fig. 4 is the vertical view of Fig. 3.Can find out that by Fig. 3 and Fig. 4 blower fan 2 horizontal arrangement of this embodiment 2 are in the inside of tower body 1, can open first partition wall 4 and be positioned at the top that tower body 1 and level are installed in blower fan 2 that other part is identical with embodiment 1.
The dry cooling tower that gravity-flow ventilation of the present invention and mechanical draft are combined, described first partition wall of opening is the adjustable shutter form of blade angle, or moving door form that can opening and closing.
Claims (3)
1. gravity-flow ventilation and the combined dry cooling tower of mechanical draft; It is characterized in that: said cooling tower comprises tower body (1), blower fan (2), radiator (3), can open first partition wall (4) and second partition wall (5); Said blower fan (2) vertically is arranged in the inside of tower body (1), simultaneously saidly opens that first partition wall (4) is positioned at tower body (1) and perpendicular to ground; Or said blower fan (2) horizontal arrangement is in the inside of tower body (1); Simultaneously said open first partition wall (4) be positioned at tower body (1) also level be installed in the top of blower fan (2), said second partition wall (5) is divided into cooling unit one by one to blower fan of some quantity (2) and radiator (3).
, a kind of gravity-flow ventilation according to claim 1 and the combined dry cooling tower of mechanical draft, it is characterized in that: described first partition wall (4) of opening is the shutter form, or the moving door form.
3. a kind of gravity-flow ventilation according to claim 1 and 2 and the combined dry cooling tower of mechanical draft is characterized in that: described radiator (3) vertically is arranged in the bottom outside of tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110232953 CN102353278B (en) | 2011-08-13 | 2011-08-13 | Dry cooling tower integrated by natural ventilation and mechanical ventilation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110232953 CN102353278B (en) | 2011-08-13 | 2011-08-13 | Dry cooling tower integrated by natural ventilation and mechanical ventilation |
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| Publication Number | Publication Date |
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| CN102353278A CN102353278A (en) | 2012-02-15 |
| CN102353278B true CN102353278B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110232953 Active CN102353278B (en) | 2011-08-13 | 2011-08-13 | Dry cooling tower integrated by natural ventilation and mechanical ventilation |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567526A (en) * | 2015-01-05 | 2015-04-29 | 双良节能系统股份有限公司 | Natural ventilation dry cooling tower with bypass air doors |
| CN105547004A (en) * | 2016-01-25 | 2016-05-04 | 北京嘉普元丰科技发展有限公司 | Mechanical assisted natural ventilation cooling tower |
| CN106382830B (en) * | 2016-11-10 | 2018-05-22 | 湖南元亨科技股份有限公司 | A kind of Complex-cooling tower |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1045595A (en) * | 1964-03-17 | 1966-10-12 | English Electric Co Ltd | Dry cooling towers |
| GB1317715A (en) * | 1971-03-02 | 1973-05-23 | Film Cooling Towers Ltd | Crossflow cooling towers |
| US4164256A (en) * | 1976-08-16 | 1979-08-14 | Kraftwerk Union Aktiengesellschaft | Cooling tower with forced ventilation and natural draft |
| CN1061277A (en) * | 1990-11-09 | 1992-05-20 | 魏仕英 | Atomizing propulsion aeration cooling tower |
| DE19521814C1 (en) * | 1995-06-16 | 1996-11-21 | Balcke Duerr Ag | Method for controlling the air volume ratio of a wet-dry cooling tower |
| WO2005083342A1 (en) * | 2004-02-27 | 2005-09-09 | Gosudarstvennoe Nauchnoe Uchrejdenie 'institut Teplo-I Massoobmena Im. A.V.Lukova' Nastionalnoy Akademii Nauk Belarusi | Method for cooling in a water cooling tower and a water cooling tower for carrying out said method |
| CN101551201A (en) * | 2009-05-08 | 2009-10-07 | 北京布鲁斯盖环保科技发展有限公司 | Thermal power plant combined ventilation direct air cooling system |
| CN201548083U (en) * | 2009-07-22 | 2010-08-11 | 北京布鲁斯盖环保科技发展有限公司 | Mechanical Ventilation Indirect Air Cooling System |
-
2011
- 2011-08-13 CN CN 201110232953 patent/CN102353278B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1045595A (en) * | 1964-03-17 | 1966-10-12 | English Electric Co Ltd | Dry cooling towers |
| GB1317715A (en) * | 1971-03-02 | 1973-05-23 | Film Cooling Towers Ltd | Crossflow cooling towers |
| US4164256A (en) * | 1976-08-16 | 1979-08-14 | Kraftwerk Union Aktiengesellschaft | Cooling tower with forced ventilation and natural draft |
| CN1061277A (en) * | 1990-11-09 | 1992-05-20 | 魏仕英 | Atomizing propulsion aeration cooling tower |
| DE19521814C1 (en) * | 1995-06-16 | 1996-11-21 | Balcke Duerr Ag | Method for controlling the air volume ratio of a wet-dry cooling tower |
| WO2005083342A1 (en) * | 2004-02-27 | 2005-09-09 | Gosudarstvennoe Nauchnoe Uchrejdenie 'institut Teplo-I Massoobmena Im. A.V.Lukova' Nastionalnoy Akademii Nauk Belarusi | Method for cooling in a water cooling tower and a water cooling tower for carrying out said method |
| CN101551201A (en) * | 2009-05-08 | 2009-10-07 | 北京布鲁斯盖环保科技发展有限公司 | Thermal power plant combined ventilation direct air cooling system |
| CN201548083U (en) * | 2009-07-22 | 2010-08-11 | 北京布鲁斯盖环保科技发展有限公司 | Mechanical Ventilation Indirect Air Cooling System |
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| CN102353278A (en) | 2012-02-15 |
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