CN105466235A - Direct dry cooling system of natural draft cooling tower - Google Patents
Direct dry cooling system of natural draft cooling tower Download PDFInfo
- Publication number
- CN105466235A CN105466235A CN201510975250.1A CN201510975250A CN105466235A CN 105466235 A CN105466235 A CN 105466235A CN 201510975250 A CN201510975250 A CN 201510975250A CN 105466235 A CN105466235 A CN 105466235A
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- Prior art keywords
- steam
- radiator
- tower
- cooling
- distributing pipe
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/02—Auxiliary systems, arrangements, or devices for feeding steam or vapour to condensers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a direct dry cooling system of a natural draft cooling tower. Air cooling radiators are arranged in rows and an array on a cross section at a certain height within the tower in a direction parallel to a diameter of the section; the radiators of each row share one steam distribution pipe; from the center to the periphery of the tower, the lengths and diameters of the steam distribution pipes are orderly reduced; such a unique form of row arrangement of the radiators within the tower is conductive to effectively reduce the length of each steam distribution pipe in the system, and therefore, steam exhaust pressure drop in the pipe can be well controlled. The direct dry cooling system of the natural draft cooling tower is scientific, tidy and simple in overall arrangement form; further, the pressure drop of a steam exhaust pipeline is reduced and the electric energy production of a unit is increased.
Description
[technical field]
The invention belongs to engineering field, relate to the direct dry cooling systems of a kind of cooling stack.
[background technology]
Direct Air-Cooling Technology, because meeting current energy-saving and emission-reduction policy, is applied in recent years and is increasingly increased.Conventional direct air cooling system is equipped with multiple stage axial flow cooling blower.
In recent years, more and more stricter along with environmental requirement, and each engineering project is to the strict control of its operating cost.In the force ventilation cooling procedure of prior art, the Noise Prevention and Treatment problem of blower fan is more and more outstanding, and its power consumption is comparatively large, and long-term maintenance cost is also larger.For the problems referred to above, the direct dry cooling-system of gravity-flow ventilation arises at the historic moment, and it replaces conventional force ventilation with cooling stack.When adopting layout in gravity-flow ventilation dry cooling-system radiator tower, normally radiator is along the circumferential direction circular layout into monocycle or many rings in tower, this arrangement form makes steam-distributing pipe longer, and steam discharge pressure drop increases thereupon, directly cause steam turbine back pressure to raise, thus reduce generated energy.
[summary of the invention]
The object of the invention is to provide a kind of cooling stack direct dry cooling systems, reduces to flow through air mass flow and the flow velocity that radiator enters tower, reduces the heat exchange amount of radiator, thus the frost resistance of cooling system between improving.
For achieving the above object, the technical solution used in the present invention is:
The direct dry cooling systems of a kind of cooling stack, comprise radiator, steam main and steam-distributing pipe, steam main is arranged in tower along the diameter of cooling stack certain altitude cross section, on the cross section of radiator certain altitude in cooling stack, along this diameter of section direction arranged in arrays in a row, each row's radiator shares a steam-distributing pipe, each steam-distributing pipe is all communicated with steam main, each steam distribution length of tube is reduced to tower week gradually by the cooling stack tower heart, every root steam-distributing pipe diameter reduces from the middle to both ends gradually.
Further, described radiator comprises following current radiator and counter flow radiator, and described counter flow radiator is arranged in the position near tower week, is namely arranged in the end often arranging radiator.
Further, described steam main is arranged in above radiator, and steam main and each steam-distributing pipe are positioned on the same cross section of cooling stack.
Further, described steam main is arranged in below radiator, and each steam-distributing pipe is arranged in above radiator, and the steam transition conduit that each steam-distributing pipe is arranged by a cross-sectional diameter along cooling stack is communicated with steam main.
Further, the diameter of described steam transition conduit reduces from the middle to both ends gradually.
Further, cooling stack air inlet is arranged between tower bottom X post.
Further, absolute altitude at the bottom of each steam-distributing pipe pipe increases gradually from the middle to both ends or reduces.
The direct dry cooling systems steam main of cooling stack of the present invention is arranged in tower along the diameter of cooling stack certain altitude cross section, on the cross section of radiator certain altitude in cooling stack, along this diameter of section direction arranged in arrays in a row, each row's radiator shares a steam-distributing pipe, by the unique forms of in a row arranging in radiator tower, this arrangement form effectively decreases the length of steam-distributing pipe in system, makes to manage interior steam discharge pressure drop and is well controlled.Integral arrangement formal science, neat, succinct, reduce the pressure drop of blow-off line, improve unit generation amount.
Further, each steam distribution length of tube is reduced to tower week gradually by the cooling stack tower heart, and every root steam-distributing pipe diameter reduces from the middle to both ends gradually, good control quantity of steam, ensure the position of tower center good cooling results, quantity of steam is larger, provides cooling effectiveness.
Further, steam main can be arranged in above or below steam-distributing pipe, and adopt high-order or status layout, arrangement is flexible, can adjust according to engineering concrete condition, easy for installation.
[accompanying drawing explanation]
Fig. 1 is tower inner radiator floor plan of the present invention (a steam main high position is arranged);
Fig. 2 is tower inner radiator section layout drawing of the present invention (a steam main high position is arranged);
Fig. 3 is steam-distributing pipe layout drawing in tower of the present invention (a steam main high position is arranged);
Fig. 4 is tower inner radiator floor plan (steam main low position) of the present invention;
Fig. 5 is tower inner radiator section layout drawing (steam main low position) of the present invention;
Fig. 6 is steam-distributing pipe layout drawing in tower of the present invention (steam main low position);
Wherein: 1 is cooling stack; 2 is following current radiator; 3 is counter flow radiator; 4 is steam-distributing pipe; 5 is tower bottom X post 5; 6 is steam main.
[detailed description of the invention]
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Shown in Fig. 1-3, core of the present invention is the arrangement form of air cooling heat radiator in tower, the direct dry cooling systems of cooling stack comprises radiator, steam main 6 and steam-distributing pipe 4, on the cross section of radiator certain altitude in tower, along diameter of section direction arranged in arrays in a row, each row's radiator shares a steam-distributing pipe, steam main 6 is arranged in tower along the diameter of cooling stack 1 certain altitude cross section, each steam-distributing pipe 4 is all communicated with steam main 6, each steam-distributing pipe 4 length is reduced to tower week gradually by the cooling stack tower heart, every root steam-distributing pipe 4 diameter reduces from the middle to both ends gradually.
Steam main 6 is arranged in above radiator, and steam main 6 and each steam-distributing pipe 4 are positioned on the same cross section of cooling stack 1.
The steam discharge that need cool is delivered in cooling stack 1 in steam-distributing pipe 4 through the steam main 6 that a high position is arranged, enters in radiator tube bank successively along steam-distributing pipe 4; Cold air, under the effect of cooling stack draft, passes by tower is outer the radiator arranged in tower after tower bottom X post 5, and be heated and become hot-air from tower top discharge tower, in radiator, steam discharge is condensed and is collected to centralized collection reuse after bottom radiator simultaneously.
Radiator comprises following current radiator 2 and counter flow radiator 3, and the main centralized arrangement of counter flow radiator, near tower week, is namely arranged in the end often arranging radiator; Also can according to specific environment and service condition, be evenly arranged counter flow radiator by a certain percentage often arranging in radiator.
Conventional tower inner radiator arrangement form is that radiator is circumferentially circular layout into monocycle or many rings in tower, and steam-distributing pipe 4 is annular configuration, and pipeline is longer, and steam discharge pressure drop is larger.This novel arrangement mode, steam-distributing pipe 4 is dendritic layout, and pipeline is shorter, and steam discharge pressure drop is little.
Further, too much ponding in steam pipe, absolute altitude at the bottom of each steam-distributing pipe 4 pipe increases gradually from the middle to both ends or reduces.
Accompanying drawing 4 ~ 6 is compared accompanying drawing 1 ~ 3, only be set up at the cloth of steam main 6 and distinguish to some extent, Fig. 1 ~ 3 steam main 6 adopts high-order layout, Fig. 4 ~ 6 adopt low position, steam main 6 is arranged in below radiator, each steam-distributing pipe 4 is arranged in above radiator, and the steam transition conduit that each steam-distributing pipe 4 is arranged by a cross-sectional diameter along cooling stack is communicated with steam main 6, and the diameter of steam transition conduit reduces from the middle to both ends gradually.
Above content is further description made for the present invention by reference to the accompanying drawings; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the present invention by submitted to claims determination scope of patent protection.
Claims (7)
1. the direct dry cooling systems of cooling stack, it is characterized in that: comprise radiator, steam main (6) and steam-distributing pipe (4), steam main (6) is arranged in tower along the diameter of cooling stack (1) certain altitude cross section, on the cross section of radiator certain altitude in cooling stack (1), along this diameter of section direction arranged in arrays in a row, each row's radiator shares a steam-distributing pipe (4), each steam-distributing pipe (4) is all communicated with steam main (6), each steam-distributing pipe (4) length is reduced to tower week gradually by the cooling stack tower heart, every root steam-distributing pipe (4) diameter reduces from the middle to both ends gradually.
2. the direct dry cooling systems of cooling stack according to claim 1, it is characterized in that: described radiator comprises following current radiator (2) and counter flow radiator (3), described counter flow radiator (3) is arranged in the position near tower week, is namely arranged in the end often arranging radiator.
3. the direct dry cooling systems of cooling stack according to claim 1, it is characterized in that: described steam main (6) is arranged in above radiator, steam main (6) and each steam-distributing pipe (4) are positioned on cooling stack (1) same cross section.
4. the direct dry cooling systems of cooling stack according to claim 1, it is characterized in that: described steam main (6) is arranged in below radiator, each steam-distributing pipe (4) is arranged in above radiator, and the steam transition conduit that each steam-distributing pipe (4) is arranged by a cross-sectional diameter along cooling stack is communicated with steam main (6).
5. the direct dry cooling systems of cooling stack according to claim 4, is characterized in that: the diameter of described steam transition conduit reduces from the middle to both ends gradually.
6. the direct dry cooling systems of cooling stack according to claim 1, is characterized in that: cooling stack (1) air inlet is arranged between tower bottom X post (5).
7. the direct dry cooling systems of cooling stack according to claim 1, is characterized in that: absolute altitude at the bottom of each steam-distributing pipe (4) pipe increases gradually from the middle to both ends or reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975250.1A CN105466235A (en) | 2015-12-22 | 2015-12-22 | Direct dry cooling system of natural draft cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975250.1A CN105466235A (en) | 2015-12-22 | 2015-12-22 | Direct dry cooling system of natural draft cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105466235A true CN105466235A (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510975250.1A Pending CN105466235A (en) | 2015-12-22 | 2015-12-22 | Direct dry cooling system of natural draft cooling tower |
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| Country | Link |
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| CN (1) | CN105466235A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683077A (en) * | 2020-12-25 | 2021-04-20 | 山西德望节能科技有限公司 | Energy-saving natural convection air cooling tower |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576520A (en) * | 2003-07-08 | 2005-02-09 | Gea能源技术有限公司 | Exhaust steam line for steam plants |
| CN2926968Y (en) * | 2006-06-14 | 2007-07-25 | 北京国电华北电力工程有限公司 | Cooling tower with equidistance interal and external ring distributing structure |
| CN204495161U (en) * | 2014-12-20 | 2015-07-22 | 重庆市飞涛科技有限公司 | Be applicable to the water-distributing device of column type high-efficiency cooling tower |
| CN205279782U (en) * | 2015-12-22 | 2016-06-01 | 中国电力工程顾问集团西北电力设计院有限公司 | Direct dry -type cooling system of natural draft cooling tower |
-
2015
- 2015-12-22 CN CN201510975250.1A patent/CN105466235A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576520A (en) * | 2003-07-08 | 2005-02-09 | Gea能源技术有限公司 | Exhaust steam line for steam plants |
| CN2926968Y (en) * | 2006-06-14 | 2007-07-25 | 北京国电华北电力工程有限公司 | Cooling tower with equidistance interal and external ring distributing structure |
| CN204495161U (en) * | 2014-12-20 | 2015-07-22 | 重庆市飞涛科技有限公司 | Be applicable to the water-distributing device of column type high-efficiency cooling tower |
| CN205279782U (en) * | 2015-12-22 | 2016-06-01 | 中国电力工程顾问集团西北电力设计院有限公司 | Direct dry -type cooling system of natural draft cooling tower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683077A (en) * | 2020-12-25 | 2021-04-20 | 山西德望节能科技有限公司 | Energy-saving natural convection air cooling tower |
| CN112683077B (en) * | 2020-12-25 | 2022-10-25 | 山西德望节能科技有限公司 | Energy-saving natural convection air cooling tower |
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Application publication date: 20160406 |