CN203848707U - Wind guide device used for interior of direct air cooling unit - Google Patents
Wind guide device used for interior of direct air cooling unit Download PDFInfo
- Publication number
- CN203848707U CN203848707U CN201420254060.1U CN201420254060U CN203848707U CN 203848707 U CN203848707 U CN 203848707U CN 201420254060 U CN201420254060 U CN 201420254060U CN 203848707 U CN203848707 U CN 203848707U
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- air
- triangle
- shape
- deep bead
- air cooling
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Abstract
The utility model discloses a wind guide device used for the interior of a direct air cooling unit, and belongs to the technical field of power station air cooling. The internal wind guide device of the air cooling unit is composed of triangular wind screens which are installed at four corner areas at the bottom inside the air cooling unit in a mode of inclining by a certain angle, the tops of the triangular wind screens are fixed to air cooling fin tube bundles at the bottom end of an A-type frame structure, one sides of the triangular wind screens are connected with the side wall of the direct air cooling unit, and the other sides of the triangular wind screens are tightly attached to condensed water pipelines. The bottoms of the triangular wind screens reach the edges of the upper end of an air cooling fan so as to enclose the area, break the air flow vortex, eliminate the flow dead zone, and meanwhile guide the air to flow upwards. By means of the wind guide device, a cooling air flow field in the air cooling unit is optimized, uniform distribution of cooling air flow quantity of the fin tube bundles is achieved, the tube bundle heat transferring area is fully utilized, the heat dissipation capacity of an air cooled condenser is improved, and the running back pressure of a unit is reduced.
Description
Technical field
The utility model belongs to power station air cooling technical field.Be particularly related to the air ducting of inside, a kind of Direct Air-Cooled unit.
Background technology
The rich coal lack of water in the northern area of China, the power station direct air-cooling technology therefore with remarkable water-saving benefit has obtained and has developed rapidly.Direct air cooling system is by dozens of air cooling cell formation, and heat transfer area is large, and blower fan quantity is many, causes direct air cooling system investment large, and station service power consumption rate is high.Research shows, air cooling blower fan outlet is rotation rising flow field, cause tube bank surface flow field to present Central Symmetry characteristic, four angular regions of fan platform occur that two relative angular region flows are large, and another two situations that angular region flow is little, make to restrain surface cool air mass flow and divide polarity inhomogeneous, finned-tube bundle heat exchanger effectiveness is low.In addition, four angular regions in air cooling unit bottom, there is serious Air Flow vortex, form flow of cooling air dead band, flow losses increase, the dynamic performance of axial flow blower is suppressed, and air cooling tubes condenser integral heat sink performance significantly declines, thereby affects security and the economy of Direct Air-cooled Unit operation.
In Direct Air-Cooled unit bottom, four angular regions of fan platform, arrange the wind deflector of certain planform, to guide air upwards to flow, break Air Flow vortex, eliminate flow dead, realize the reorganization of air flow field, improve the uniformity that finned-tube bundle air mass flow is distributed, and make full use of tube bank heat transfer area, improve air cooling tubes condenser thermal performance, reduce unit operation back pressure.
Utility model content
The purpose of this utility model is for air cooling blower fan outlet rotation rising flow field and air cooling unit " A " shape frame structure, inner four the lower corner regions Air Flows in air cooling unit that cause are disorderly, flow dead is serious, the defect that causes air cooling unit heat transfer property to be not in full use, a kind of air ducting for inside, Direct Air-Cooled unit is proposed, described air cooling unit is welded into " A " shape frame structure by air cooled fin tube bundle below steam-distributing pipe, parallel twice pavement handrail is set in the bottom of " A " shape frame structure, motor is arranged between twice pavement handrail, it is characterized in that, the inner air ducting in described Direct Air-Cooled unit will be " triangle " shape structure deep bead and be installed on four of the bottoms folding corner region of air cooling unit " A " shape frame structure, four angular regions of fan platform are sealed, break the Air Flow vortex in this region, eliminate Air Flow dead band.
Described air ducting is " triangle " shape deep bead; The size of " triangle " shape deep bead, determines according to the size of inner " A " shape frame structure in air cooling unit.
The top of described " triangle " shape air deep bead is fixed on the air cooled fin tube bundle 2 of " A " shape frame structure bottom, " triangle " shape deep bead one side is connected with Direct Air-Cooled unit side wall, opposite side is near condensing water conduit 6, and " triangle " shape deep bead bottom is to air cooling blower fan 7 upper end-face edges; And at " triangle " shape deep bead center, vertical support 8 is set, and frame bottom is fixed on fan platform 9, and a top of the trellis is welded in one with " triangle " shape deep bead.
The beneficial effects of the utility model are that the deep bead that is " triangle " shape structure is installed on to four angular regions of air cooling unit inner bottom part, be intended to four angular regions of closed bottom, stop this region of air flow, break flow of cooling air vortex, eliminate Air Flow dead band, guide air upwards to flow simultaneously, thereby realize the uniform distribution of air cooled fin tube bundle cooling air delivery, make full use of tube bank heat transfer area, improve air cooling tubes condenser heat-sinking capability, reduce unit operation back pressure, improve security and the economy of air cooling system operation.
Accompanying drawing explanation
Fig. 1 is Direct Air-Cooled unit internal structure and air ducting schematic diagram.
Fig. 2 is the inner air ducting partial schematic diagram in Direct Air-Cooled unit.
Fig. 3 is the air flow field before and after the inner air ducting in Direct Air-Cooled unit is installed, and the air flow field of air ducting (a) is not installed; (b) air flow field of air ducting is installed.
The specific embodiment
The utility model proposes a kind of air ducting for inside, Direct Air-Cooled unit.Below in conjunction with accompanying drawing, the utility model is explained.
In the inner air ducting structural representation in the Direct Air-Cooled unit shown in Fig. 1, described air cooling unit is welded into " A " shape frame structure below steam-distributing pipe 1 by air cooled fin tube bundle 2, parallel twice pavement handrail 4 is set in the bottom of " A " shape frame structure, and motor 3 is arranged between twice pavement handrail 4; Air ducting 5 tilts to be installed on four folding corner regions in " A " shape frame structure bottom in air cooling unit with the angle of 15 °-45 °, to seal this region, stops air to enter, and guides air upwards to flow simultaneously.Air ducting 5 is " triangle " shape deep beads, with the steel plate that 1-3mm is thick, is processed into, and requires smooth surface, and does preservative treatment.The size of " triangle " shape deep bead, according to the size of inner " A " shape frame structure in air cooling unit, determine, its top is fixed on the air cooled fin tube bundle 2 of " A " shape frame structure bottom, " triangle " shape deep bead one side is connected with Direct Air-Cooled unit side wall, opposite side is near condensing water conduit 6, and " triangle " shape deep bead bottom is to air cooling blower fan 7 upper end-face edges (as shown in Figure 2); In order to prevent the whole sinking of " triangle " shape deep bead, at " triangle " shape deep bead center, vertical support 8 is set, play the effect of support " triangle " shape deep bead.Frame bottom is fixed on fan platform 9, and a top of the trellis is welded in one with " triangle " shape air deep bead.This air ducting seals four angular regions of air cooling unit inner bottom part, prevent that air from producing in this region the vortex that flows, avoid forming Air Flow dead band, guide air upwards to flow simultaneously, thereby optimize cooling-air flow field (as Fig. 3 (a), shown in Fig. 3 (b)) in air cooling unit, realize the uniform distribution of air cooled fin tube bundle cooling air delivery, make full use of tube bank heat transfer area, improve air cooling tubes condenser heat-sinking capability, reduce the operation back pressure of Direct Air-cooled Unit.
Claims (4)
1. the air ducting for inside, Direct Air-Cooled unit, it is characterized in that, the inner air ducting in described Direct Air-Cooled unit will be " triangle " shape structure deep bead and be installed on four of the bottoms folding corner region of air cooling unit " A " shape frame structure, four angular regions of fan platform are sealed, break the Air Flow vortex in this region, eliminate Air Flow dead band, guide air upwards to flow simultaneously, thereby realize the uniform distribution of air cooled fin tube bundle cooling air delivery, make full use of tube bank heat transfer area, improve air cooling tubes condenser heat-sinking capability, reduce unit operation back pressure.
2. according to claim 1 for the air ducting of inside, Direct Air-Cooled unit, it is characterized in that, described air ducting is " triangle " shape deep bead; The size of " triangle " shape deep bead, determines according to the size of inner " A " shape frame structure in air cooling unit.
3. according to claim 1 for the air ducting of inside, Direct Air-Cooled unit, it is characterized in that, the top of described " triangle " shape air deep bead is fixed on the air cooled fin tube bundle (2) of " A " shape frame structure bottom, " triangle " shape air deep bead one side is connected with Direct Air-Cooled unit side wall, opposite side is near condensing water conduit (6), and " triangle " shape deep bead bottom is to air cooling blower fan (7) upper end-face edge; In order to prevent the whole sinking of " triangle " shape deep bead, at " triangle " shape deep bead center, vertical support (8) is set, play the effect of support " triangle " shape deep bead, it is upper that frame bottom is fixed on fan platform (9), and a top of the trellis is welded in one with " triangle " shape deep bead.
4. according to claim 1 for the air ducting of inside, Direct Air-Cooled unit, it is characterized in that, described " triangle " shape deep bead is processed into the thick steel plate of 1-3mm, requires smooth surface, and does preservative treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420254060.1U CN203848707U (en) | 2014-05-19 | 2014-05-19 | Wind guide device used for interior of direct air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420254060.1U CN203848707U (en) | 2014-05-19 | 2014-05-19 | Wind guide device used for interior of direct air cooling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203848707U true CN203848707U (en) | 2014-09-24 |
Family
ID=51561714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420254060.1U Withdrawn - After Issue CN203848707U (en) | 2014-05-19 | 2014-05-19 | Wind guide device used for interior of direct air cooling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203848707U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983123A (en) * | 2014-05-19 | 2014-08-13 | 华北电力大学 | Internal wind guide device of direct air cooling unit |
| CN105758249A (en) * | 2016-04-18 | 2016-07-13 | 河北工程技术高等专科学校 | Cascade-type cooling air diversion device of direct air cooling unit |
-
2014
- 2014-05-19 CN CN201420254060.1U patent/CN203848707U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983123A (en) * | 2014-05-19 | 2014-08-13 | 华北电力大学 | Internal wind guide device of direct air cooling unit |
| CN103983123B (en) * | 2014-05-19 | 2016-07-27 | 华北电力大学 | The internal air ducting of a kind of direct air cooling unit |
| CN105758249A (en) * | 2016-04-18 | 2016-07-13 | 河北工程技术高等专科学校 | Cascade-type cooling air diversion device of direct air cooling unit |
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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: 20140924 Termination date: 20150519 |
|
| EXPY | Termination of patent right or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140924 Effective date of abandoning: 20160727 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |