CN2835936Y - Air duct dedicated for cooling tower - Google Patents
Air duct dedicated for cooling tower Download PDFInfo
- Publication number
- CN2835936Y CN2835936Y CN 200520015276 CN200520015276U CN2835936Y CN 2835936 Y CN2835936 Y CN 2835936Y CN 200520015276 CN200520015276 CN 200520015276 CN 200520015276 U CN200520015276 U CN 200520015276U CN 2835936 Y CN2835936 Y CN 2835936Y
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- CN
- China
- Prior art keywords
- section
- air duct
- air cylinder
- cooling tower
- diffusing
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- Expired - Fee Related
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Abstract
The utility model discloses an air cylinder for mechanical draft cooling towers. In the utility model, a blower fan is installed in a housing section, a contracted section is arranged between the housing section and a connecting basal plane, and the housing section extends upwards to form a diffusing section. The whole body of the air cylinder is composed of the diffusing section, the housing section, the contracted section and a joint axial revolving body of the connecting basal plane. The lower surface of the air cylinder is provided with the contracted section and the connecting basal plane, so that the air resistance is reduced, and simultaneously, due to a platform composed of the connecting basal plane, the installation and the maintenance become convenient. The upwards extending diffusing section and the housing section form a cross section included angle with the degree of 9 DEG to 15 DEG, and the R/D of the reverse round angle position of the contracted section is from 4% to 8%. The diffusing section of the air cylinder diffuses outwards, the cross section of the diffusing section is a straight line, and the top part of the air cylinder is in the shape of a circle rather than an ellipse or a polygon, etc., so that the production and the manufacture are easy.
Description
Technical field
The utility model relates to the air duct that a kind of mechanical-draft cooling tower is used, and specifically is meant the special-purpose air duct of the cooling tower that utilizes the axial fan exhausting.
Background technology
When equipment such as operation refrigerator, heat exchanger or air-conditioning unit, unit can continue to produce heat, and for the heat of taking away that effectively continues also finally is discharged in the atmosphere, people have invented a lot of machines and device, and wherein most popular is exactly cooling tower.Cooling tower is discharged the high temperature malaria to the outside after normally utilizing blower fan to force to absorb the cooling water generation heat exchange of air with heat of outside low temperature drying.Can effectively discharge air, reduce as far as possible simultaneously that hot gas refluxes and reduce energy consumption etc. cause close important.
The cooling tower air duct is divided into three parts usually: contraction section, casing section and diffuser, and it is total that wherein contraction section can be curve or straight line or curve and straight line, and diffuser can be curve or straight line or curve and has with straight line.When designing, the cooling tower air duct need consider: factors such as windage, noise, the backflow of hot vapour and manufacturing cost, usually " contraction section " resistance that can slow down air-flow promptly helps reducing windage, and reasonable use " diffuser " is favourable reducing noise, windage and avoiding aspect the hot vapour backflow.Crossflow cooling tower air outlet and inlet scoop are leaned on nearerly usually, and the inlet scoop is a negative pressuren zone, and air outlet is a zone of positive pressure, so occur hot vapour backflow situation usually easily.Air duct does not have " contraction section " and " diffuser ", and structure is very simple, but all unfavorable aspect windage, noise and hot gas backflow; Air duct does not have " diffuser ", is reducing noise, windage and is avoiding very unfavorable aspect the hot gas backflow.
The air duct design has contraction section, casing section and diffuser, reducing noise, windage and avoiding normally favourable aspect the hot gas backflow, but existing structural design is unreasonable, to above noise, windage and avoid hot gas backflow aspect also not good enough on effect, makes also relative complex.
Summary of the invention
The utility model purpose is to overcome related drawback or the defective of cooling tower air duct in the above prior art, designs a kind ofly can reduce noise and windage has also been avoided the hot gas backflow simultaneously, and maintenance, easily manufactured cooling tower air duct are installed.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: the special-purpose air duct of a kind of cooling tower, comprise the casing section and be connected the base portion plane, in the casing section, blower fan is installed, described casing section is provided with contraction section with being connected between the base portion plane, and described casing section extends upward and is set to diffuser; Described air duct integral body is to be connected the base portion plane with rectangle and to be constituted by diffuser, casing section, the common axial revolving body of contraction section.Be provided with contraction section below the air duct and connect the base portion plane, this connects the platform that the base portion plane constitutes because of having during installation and maintenance, so comparatively convenient when reducing windage.There is not planar section at the bottom of existing most of air duct, the installation and maintenance inconvenience, Operation and Maintenance is carried out in operating personnel's inconvenience.
The cross section angle that described upwardly extending diffuser and casing section form is 9～15 °; R/D=4%～8% of described contraction section rounding position." diffuser " of air duct is toward external diffusion, and " diffuser " section is a straight line, and the air duct top be circular, rather than shapes such as ellipse or polygon, so also more or less freely in the manufacturing.
Description of drawings
Accompanying drawing 1 is a kind of structural representation that cooling tower hot gas refluxes easily in the prior art;
Accompanying drawing 2 is a kind of structural representations of the present utility model;
Accompanying drawing 3 is a kind of user mode structural representations of the utility model air duct.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 2, the utility model is air duct to be designed to diffuser 1, casing section 2, contraction section 3 and to be connected base portion plane 4 totally 4 parts, and air duct integral body is to be connected the base portion plane with rectangle and to be constituted by diffuser, casing section, the common axial revolving body of contraction section.The blower fan of cooling tower wherein is installed in the casing section 2.
The cross section angle that becomes is 9～15 °; Contraction section 3 connects casing section 2 and is connected base portion plane 4, and contraction section can be curve or straight line or curve and the total structure of straight line, the R/D=4% of its rounding position～8%.
Referring to Fig. 3, whole air duct is installed on the steel support in the cooling tower shell 5, owing to be provided with contraction section 3 and diffuser 1, air duct integral body helps reducing noise, windage and avoids hot gas to reflux; Connecting base portion plane 4 can provide a platform when safeguarding installation, connect the platform that the base portion plane constitutes because of having during installation and maintenance, so comparatively convenient.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to the foregoing description, and many distortion can also be arranged.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. the special-purpose air duct of a cooling tower, comprise the casing section and be connected the base portion plane, in the casing section blower fan is installed, it is characterized in that described casing section (2) is provided with contraction section (3) with being connected between the base portion plane (4), described casing section (2) extends upward and is set to diffuser (1); Described air duct integral body is to be made of diffuser (1), casing section (2), common axial revolving body and rectangular base plane (4) of contraction section (3).
2. the special-purpose air duct of cooling tower according to claim 1 is characterized in that described upwardly extending diffuser (1) and the cross section angle that casing section (2) forms are 9～15 °; R/D=4%～8% of described contraction section (3) rounding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015276 CN2835936Y (en) | 2005-09-29 | 2005-09-29 | Air duct dedicated for cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015276 CN2835936Y (en) | 2005-09-29 | 2005-09-29 | Air duct dedicated for cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2835936Y true CN2835936Y (en) | 2006-11-08 |
Family
ID=37300589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520015276 Expired - Fee Related CN2835936Y (en) | 2005-09-29 | 2005-09-29 | Air duct dedicated for cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2835936Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846460A (en) * | 2010-06-21 | 2010-09-29 | 中广核工程有限公司 | Nuclear grade cooling tower |
| CN109520364A (en) * | 2018-11-09 | 2019-03-26 | 四川中乙制冷设备有限公司 | The air discharge structure of cooling tower |
-
2005
- 2005-09-29 CN CN 200520015276 patent/CN2835936Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846460A (en) * | 2010-06-21 | 2010-09-29 | 中广核工程有限公司 | Nuclear grade cooling tower |
| CN101846460B (en) * | 2010-06-21 | 2012-07-04 | 中广核工程有限公司 | Nuclear grade cooling tower |
| CN109520364A (en) * | 2018-11-09 | 2019-03-26 | 四川中乙制冷设备有限公司 | The air discharge structure of cooling tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 Termination date: 20140929 |
|
| EXPY | Termination of patent right or utility model |