CN107328292B - Self-supporting widening platform of natural ventilation dry cooling tower - Google Patents
Self-supporting widening platform of natural ventilation dry cooling tower Download PDFInfo
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- CN107328292B CN107328292B CN201710698075.5A CN201710698075A CN107328292B CN 107328292 B CN107328292 B CN 107328292B CN 201710698075 A CN201710698075 A CN 201710698075A CN 107328292 B CN107328292 B CN 107328292B
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- cooling tower
- supporting
- platform
- horizontal
- widening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a self-supporting stretching platform of a natural ventilation dry cooling tower, which comprises a stretching platform bracket and a horizontal sealing plate arranged on the stretching platform bracket; the inner side of the stretching platform bracket is supported on the inclined strut of the cooling tower, the bottom of the stretching platform bracket is supported by a supporting rod with a single or double inverted quadrangular pyramid or double Y-shaped structure, the supporting rod is connected with the top of a vertical supporting column, and the vertical supporting column is fixed on a foundation; the top of the vertical support column is provided with a horizontal diagonal bracing, and the horizontal diagonal bracing is in drawknot support with the diagonal bracing of the cooling tower. The invention has the advantages of loose limit on the radial width of the stretching platform, small out-of-plane acting force applied to the inclined strut of the cooling tower, small diameter of the bottom of the cooling tower, low cost and the like, and compared with a double Y-shaped support, the single or double inverted quadrangular pyramid support can be used for a wider stretching platform. The invention can be used for the design of newly-built natural ventilation dry cooling towers and the transformation of existing air cooling towers.
Description
Technical Field
The invention belongs to the technical field of industrial natural ventilation cooling towers, and particularly relates to a self-supporting widening platform of a natural ventilation dry cooling tower.
Background
The vast majority of the stretching platforms of the large natural ventilation dry cooling towers with vertically arranged radiators are lower-supporting stretching platforms, as shown in fig. 1, and the minority of the stretching platforms are upper-pulling stretching platforms, as shown in fig. 2.
The lower supporting type stretching platform is supported on the inclined strut of the cooling tower through the lower inclined strut, and under the action of dead weight and internal and external wind, the inclined strut of the cooling tower bears the out-of-plane acting force which is transmitted by the stretching platform through the lower inclined strut and has a large numerical value, so that the structural stress of the inclined strut is very unfavorable. This force system limits the radial width of the widening platform to reduce out-of-plane forces experienced by the cooling tower diagonal struts.
The upper-pulling type stretching platform is directly anchored on the cooling tower drum through the diagonal draw bar, and because the wall thickness at the anchor point of the tower drum is very thin, the thin-wall concrete structure can bear too large out-of-plane concentrated force, so that the application range of the upper-pulling type stretching platform is directly limited, and only a few projects adopt the structural form in practical projects.
When the two structural forms of the widening platform are adopted, the radial width of the widening platform is limited to a smaller range due to the safety of the cooling tower structure. The diameter of the outer edge of the vertically arranged radiator directly determines the diameter of the bottom of the cooling tower under the restriction of the width of the widening platform, so that the civil engineering cost of the cooling tower is affected.
If the limitation of the width of the widening platform can be relieved, a cooling tower with a thinner body shape can be selected during the design of the dry cooling tower, so that the civil engineering cost of the cooling tower is greatly reduced. In view of the current design and construction situation of industrial natural ventilation cooling towers, it is necessary to provide a novel supporting structure of a widening platform, which reduces the adverse effect on the inclined strut and tower barrel structure of the cooling tower after the width of the widening platform is enlarged.
Disclosure of Invention
The invention provides a self-supporting stretching platform of a natural ventilation dry cooling tower, which aims to solve the defects of the design scheme of the prior stretching platform of the air cooling tower; the stretching platform structure can relieve the limit on the width of the stretching platform, and improves the economy of the natural ventilation dry cooling tower by reducing the bottom diameter of the air cooling tower under the premise of ensuring the thermal performance of the air cooling tower.
In order to achieve the above purpose, the present invention adopts the following technical solutions:
a self-supporting stretching platform of a natural ventilation dry cooling tower comprises a stretching platform bracket and a horizontal sealing plate arranged on the stretching platform bracket; the inner side of the stretching platform bracket is supported on the inclined strut of the cooling tower, the bottom of the stretching platform bracket is supported by a supporting rod with a single or double inverted quadrangular pyramid or double Y-shaped structure, the supporting rod is connected with the top of a vertical supporting column, and the bottom of the vertical supporting column is fixed on a foundation; the top of the vertical support column is provided with a horizontal diagonal bracing, and the horizontal diagonal bracing is in drawknot support with the diagonal bracing of the cooling tower.
The stretching platform support is a longitudinal and transverse beam structure or a space grid structure which consists of radial horizontal beams, inner supports and annular purlines.
The horizontal sealing plate is supported on radial horizontal beams or space grid nodes through annular purlines, and annular purlines are arranged at the lower part of the horizontal sealing plate; and inner supports are arranged between adjacent radial horizontal beams in a crossing way to form a triangular stress system in a plane or space.
The circumferential purlines form a drainage slope along the radial direction.
The top of the inverted quadrangular pyramid or the double Y-shaped supporting rods is respectively fixed with different radial horizontal beams or space grid bottom surface nodes, and the bottom of the supporting rods is contracted and fixed with the top of one vertical supporting column.
And diagonal rods are arranged between the adjacent widening platforms, one ends of the diagonal rods are connected with radial horizontal beams or space grid nodes of one widening platform, and the other ends of the diagonal rods are connected with vertical support columns of the adjacent widening platforms.
The horizontal sealing plate adopts a single-layer contour plate, a composite contour plate, a thin steel plate or a concrete hollow plate.
The vertical support column is a solid or hollow column, the outer contour of the cross section of the vertical support column is round, rectangular or elliptical, and the building material of the vertical support column is reinforced concrete, concrete filled steel tube or steel structure.
The cooling tower inclined strut is of an X-shaped structure or a net-shaped structure.
Compared with the traditional stretching platform supporting structure system, the main characteristics of the structure system are as follows:
the stretching platform of the natural ventilation dry cooling tower is supported on the vertical support column through the support rods which are arranged in a single or double inverted quadrangular pyramid or double Y shape, so that the limitation on the width of the stretching platform is eliminated, the width of the stretching platform can be greatly increased without obvious influence on the structures of the cooling tower support column and the tower barrel, and the width of the stretching platform can be further increased by increasing the number of turns of the planar arrangement of the inverted quadrangular pyramid or the double Y shape support when necessary; the top of the vertical support column is provided with a horizontal diagonal bracing, and the diagonal bracing of the horizontal diagonal bracing cooling tower is tied and supported, so that the stability of the vertical support column is improved, the thermal type selection of the natural ventilation cooling tower is more flexible, and more cooling tower process configuration schemes can be provided for optimization comparison selection; the forces acting on the cooling tower diagonal struts or tower structures are also reduced. The cooling tower between the widening platform structures has the advantages of small diameter, low civil engineering quantity and good economy.
Further, the support bar is of a single or double inverted quadrangular pyramid or double Y-shaped structure, and the inverted quadrangular pyramid support can be used for a wider widening platform compared with the double Y-shaped support.
Further, the crossed inner supports are arranged between the radial horizontal beams, and a plurality of triangles in the space or the plane are formed between the radial horizontal beams through the crossed inner supports, so that the triangles have strong stability, and the stability of the radial horizontal beams is improved.
Drawings
FIG. 1 is a prior art undershot stretching platform;
FIG. 2 is a prior art pull-up stretching stage;
FIG. 3 is a perspective view of an inverted quadrangular pyramid support widening platform of a natural draft dry cooling tower;
FIG. 4 is an oblique view of a natural draft dry cooling tower inverted quadrangular pyramid support widening platform;
FIG. 5 is a schematic diagram of an inverted quadrangular pyramid support system;
fig. 6 is a schematic view of a vertical support column and a support column horizontal diagonal brace.
FIG. 7 is a perspective view of a dual Y-shaped support widening platform of a natural draft dry cooling tower;
FIG. 8 is an oblique view of a dual Y-shaped support widening platform of a natural draft dry cooling tower;
FIG. 9 is a schematic diagram of a dual Y-shaped support system.
1, a cooling tower inclined strut; 2. a radial horizontal beam; 3. an inner support; 4. a horizontal sealing plate; 5. a circumferential purline; 6. a support rod; 7. a vertical support column; 8. a horizontal support; 9. and a diagonal draw bar.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 3 to 9, the self-supporting widening platform of the natural ventilation dry cooling tower comprises a cooling tower inclined strut 1, a radial horizontal beam 2, an inner support 3, a horizontal sealing plate 4, a circumferential purline 5, an inverted quadrangular pyramid or double Y-shaped supporting rod 6, a vertical supporting column 7, a horizontal support 8, an inclined pull rod 9 and the like.
Specifically, the widening platform of the natural ventilation dry cooling tower is supported on the vertical support columns 7 through support rods 6 which are arranged in a single or double inverted quadrangular pyramid or double Y shapes. The vertical support column 7 is supported on the cooling tower diagonal support column 1 by a horizontal support 8 at the top of the vertical support column in a drawknot manner. The horizontal sealing plate 4 adopts a single-layer, composite contour plate or other sealing platform plate, and a circumferential purline 5 is arranged under the plate to find a drainage slope along the radial direction. The vertical support column 7 adopts a solid or hollow column, the external contour of the cross section is round, rectangular or other shapes, and the building material is reinforced concrete, steel pipe concrete or steel structure. And a diagonal draw bar 9 for improving stability is arranged between adjacent inverted quadrangular pyramid or double Y-shaped supporting and widening platform components. An inner support 3 which is arranged in a crossing way is arranged in the plane of the steel frame of the widening platform.
The specific principle is as follows: the horizontal sealing plate 4 of the widening platform is supported on the radial horizontal beam 2 through a circumferential purline 5; an inner support 3 which is crossed is arranged between the radial horizontal beams 2 to form a triangle stress system in a plane; the widening platform downwards transmits force to the vertical support column 7 through the support rods 6 which are arranged in an inverted quadrangular pyramid or double Y shape, and then downwards transmits force to the foundation of the vertical support column 7; the top of the vertical support column 7 is provided with a horizontal diagonal bracing 8, the horizontal diagonal bracing 8 is tied and supported with the cooling tower diagonal bracing 1, and the stability of the vertical support column 7 is improved.
In the scheme, a supporting system consisting of the radial horizontal beam, the annular purline and the inner support can be replaced by a space grid structure; the net rack is connected with the tops of the vertical support columns 7 through support rods 6, and the inner side of the net rack is supported on the inclined support column 1 of the cooling tower; the arrangement principle of the horizontal diagonal bracing and the diagonal bracing is the same as that of the scheme.
The foregoing is a further elaboration of the present invention, and it is not intended that the invention be limited to the specific embodiments shown, but rather that a number of simple deductions or substitutions be made by one of ordinary skill in the art without departing from the spirit of the invention, all shall be deemed to fall within the scope of the invention as defined by the claims which are filed herewith.
Claims (5)
1. A natural draft dry cooling tower self-supporting broadening platform which is characterized in that: comprises a stretching platform bracket and a horizontal sealing plate (4) arranged on the stretching platform bracket; the inner side of the stretching platform bracket is supported on the cooling tower inclined strut (1), the bottom of the stretching platform bracket is supported by a supporting rod (6) with a single or double inverted quadrangular pyramid or double Y-shaped structure, the supporting rod (6) is connected with the top of a vertical supporting column (7), and the bottom of the vertical supporting column (7) is fixed on a foundation; the top of the vertical support column (7) is provided with a horizontal diagonal bracing (8), and the horizontal diagonal bracing (8) is in drawknot support with the diagonal bracing (1) of the cooling tower; the stretching platform bracket is a longitudinal and transverse beam structure or a space grid structure which consists of a radial horizontal beam (2), an inner support (3) and a circumferential purline (5); the horizontal sealing plate (4) passes through the annular purline (5) and is supported on the radial horizontal beam (2) or the space grid frame node, and the annular purline (5) is arranged at the lower part of the horizontal sealing plate (4); inner supports (3) are arranged between adjacent radial horizontal beams (2) in a crossing way to form a triangular stress system in a plane or space; the top of the inverted quadrangular pyramid or double Y-shaped supporting rod (6) is respectively fixed with the bottom surface nodes of different radial horizontal beams (2) or space net racks, and the bottom of the supporting rod (6) is contracted and fixed with the top of one vertical supporting column (7); and diagonal rods (9) are arranged between the adjacent widening platforms, one ends of the diagonal rods (9) are connected with radial horizontal beams (2) or space grid nodes of one widening platform, and the other ends of the diagonal rods are connected with vertical support columns (7) of the adjacent widening platforms.
2. The self-supporting widening platform for a natural draft dry cooling tower as recited in claim 1, wherein: the circumferential purlines (5) form a drainage slope along the radial direction.
3. The self-supporting widening platform for a natural draft dry cooling tower as recited in claim 1, wherein: the horizontal sealing plate (4) adopts a single-layer contour plate, a composite contour plate, a thin steel plate or a concrete hollow plate.
4. The self-supporting widening platform for a natural draft dry cooling tower as recited in claim 1, wherein: the vertical support column (7) is a solid or hollow column, the outer contour of the cross section of the vertical support column is round, rectangular or elliptical, and the building material of the vertical support column (7) is reinforced concrete, steel pipe concrete or steel structure.
5. The self-supporting widening platform for a natural draft dry cooling tower as recited in claim 1, wherein: the cooling tower inclined strut (1) is of an X-shaped structure or a net-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710698075.5A CN107328292B (en) | 2017-08-15 | 2017-08-15 | Self-supporting widening platform of natural ventilation dry cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710698075.5A CN107328292B (en) | 2017-08-15 | 2017-08-15 | Self-supporting widening platform of natural ventilation dry cooling tower |
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| Publication Number | Publication Date |
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| CN107328292A CN107328292A (en) | 2017-11-07 |
| CN107328292B true CN107328292B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710698075.5A Active CN107328292B (en) | 2017-08-15 | 2017-08-15 | Self-supporting widening platform of natural ventilation dry cooling tower |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131026A (en) * | 2017-12-25 | 2018-06-08 | 中国化学工程第三建设有限公司 | A kind of installation method for the platform high-altitude floor that is widened |
| CN109237956A (en) * | 2018-10-25 | 2019-01-18 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of power plant natural draft air cooled condenser |
| CN113756619B (en) * | 2021-09-09 | 2022-10-14 | 浙江省二建建设集团有限公司 | Temporary support structure of cooling tower steel pipe concrete X-shaped oblique strut and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3474855A (en) * | 1965-12-14 | 1969-10-28 | English Electric Co Ltd | Natural draught dry cooling towers |
| GB1178777A (en) * | 1968-01-08 | 1970-01-21 | English Electric Co Ltd | Dry Cooling Towers |
| CN202793069U (en) * | 2012-07-20 | 2013-03-13 | 浙江东发环保工程有限公司 | Noise elimination and reduction device for large natural ventilation cooling tower of thermal power plant |
| 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 |
| CN105716441A (en) * | 2015-12-10 | 2016-06-29 | 中国电力工程顾问集团西北电力设计院有限公司 | Natural ventilation air-cooling tower with vertically-arranged radiator and adjustable effective draft force |
| CN207180459U (en) * | 2017-08-15 | 2018-04-03 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of gravity-flow ventilation dry cooling tower self-supporting broadening platform |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007012539B4 (en) * | 2007-03-13 | 2011-03-03 | Gea Energietechnik Gmbh | condensation plant |
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2017
- 2017-08-15 CN CN201710698075.5A patent/CN107328292B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3474855A (en) * | 1965-12-14 | 1969-10-28 | English Electric Co Ltd | Natural draught dry cooling towers |
| GB1178777A (en) * | 1968-01-08 | 1970-01-21 | English Electric Co Ltd | Dry Cooling Towers |
| CN202793069U (en) * | 2012-07-20 | 2013-03-13 | 浙江东发环保工程有限公司 | Noise elimination and reduction device for large natural ventilation cooling tower of thermal power plant |
| 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 |
| CN105716441A (en) * | 2015-12-10 | 2016-06-29 | 中国电力工程顾问集团西北电力设计院有限公司 | Natural ventilation air-cooling tower with vertically-arranged radiator and adjustable effective draft force |
| CN207180459U (en) * | 2017-08-15 | 2018-04-03 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of gravity-flow ventilation dry cooling tower self-supporting broadening platform |
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| CN107328292A (en) | 2017-11-07 |
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