CN216482360U - Direct air cooling system with serial arrangement of blast air and induced air - Google Patents
Direct air cooling system with serial arrangement of blast air and induced air Download PDFInfo
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- CN216482360U CN216482360U CN202123122111.4U CN202123122111U CN216482360U CN 216482360 U CN216482360 U CN 216482360U CN 202123122111 U CN202123122111 U CN 202123122111U CN 216482360 U CN216482360 U CN 216482360U
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Abstract
The utility model discloses a direct air cooling system that blast air and induced air series connection were arranged, include: the system comprises an upper pipe bundle, a lower pipe bundle, a steam distribution pipe, an intermediate header, a condensed water pipeline, a fan unit, a supporting structure and a wind-break wall. The upper pipe bundle is arranged above the fan unit and is in an A-shaped arrangement mode; the lower tube bundle is arranged below the fan unit and is arranged in a V-shaped mode; the steam distribution pipe is connected with the upper pipe bundle and uniformly distributes steam into the pipe bundle; the intermediate header is positioned between the upper tube bundle and the lower tube bundle; the condensed water header is positioned below the lower tube bundle; and the condensed water pipeline is connected with the intermediate header and the condensed water header and used for conveying the condensed water back to the thermodynamic cycle system. The fan unit is positioned in the center of a space surrounded by the upper tube bundle and the lower tube bundle. The utility model discloses a combine A type blast formula to arrange and V type induced air formula is arranged, can reduce the thickness of direct air cooling's area and interior liquid film of tube bank, improve the heat exchange efficiency of tube bank.
Description
Technical Field
The utility model relates to a direct air cooling system that blast air and induced air series connection were arranged is applied to direct air cooling fields such as electric power trade, petrochemical trade.
Background
The direct air cooling is to directly cool the steam turbine exhaust steam into condensed water through air, and is widely applied in water-deficient areas. Because the heat exchange is carried out between the gas and the steam, the heat exchange coefficient is small, and the steam exhaust quantity of the steam turbine is generally large, the heat exchange area of the direct air cooling system is very large, the length of the tube bundle is long, generally about 10m, and the occupied space is large.
In order to reduce the steam side resistance, the steam exhaust pipeline from the steam turbine steam outlet to the direct air cooling heat exchange tube bundle is required to be as short as possible, so the direct air cooling is generally arranged next to the steam turbine room, and the arrangement space is very limited. At present, most of direct air cooling is in A-type blast type arrangement, and a few of direct air cooling is in V-type induced air type arrangement, so that the occupied space is still large although the occupied space is reduced to a certain extent, and the problem also becomes a difficult problem which troubles the earlier planning of a power plant.
Steam flow's in-process in the tube bank, carry out the heat transfer through the tube bank with the outside air, constantly cool off for the condensate water, the condensate water flows down along the tube bank, and the liquid film that forms constantly bodiness, liquid film have the hindrance effect to the heat transfer, so the thickness of minimize liquid film can improve the heat exchange efficiency of steam flow in-process.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a direct air cooling system of blast air and induced air series arrangement, arrange with V type induced air formula through combining A type blast air formula, can reduce direct air cooling's area greatly, can reduce the thickness of the interior liquid film of tube bank simultaneously, improve the heat exchange efficiency of tube bank, reduce heat transfer area, further reduced occupation of land space, greatly reduced direct air cooling's project investment.
The technical scheme of the utility model: a direct air cooling system with series arrangement of blast and induced air, the system comprising: the system comprises an upper pipe bundle, a lower pipe bundle, a steam distribution pipe, an intermediate header, a condensed water pipeline, a fan unit, a supporting structure and a wind-break wall. The upper pipe bundle is arranged above the fan unit and is in an A-shaped arrangement mode; the lower tube bundle is arranged below the fan unit and is arranged in a V-shaped mode; the steam distribution pipe is connected with the upper pipe bundle and uniformly distributes steam into the pipe bundle; the intermediate header is positioned between the upper tube bundle and the lower tube bundle; the condensed water header is positioned below the lower tube bundle; and the condensed water pipeline is connected with the intermediate header and the condensed water header and used for conveying the condensed water back to the thermodynamic cycle system. The fan unit is positioned in the center of a space surrounded by the upper tube bundle and the lower tube bundle. The supporting structure is used for supporting all equipment, and the air inlet space is arranged below the supporting structure. The wind-break walls are positioned on the periphery of the upper part of the supporting structure and are flush with the top of the steam distribution pipe in height.
In the direct air cooling system with serial arranged blast and induced draft, the upper tube bundle is arranged above the fan unit, and the fan unit drives air to flow through the outer side of the upper tube bundle in a blast mode; the lower tube bundle is arranged below the fan set, and the fan set drives air to flow through the outer side of the lower tube bundle in an induced air mode;
in the direct air cooling system with serially arranged blast air and induced air, the upper tube bundle and the lower tube bundle are composed of base tubes and external fins, the base tubes are single-row flat tubes or multiple-row small round tubes, the fins are snakelike aluminum fins or round steel fins, steam circulates inside the base tubes, and air circulates outside the base tubes;
in the direct air cooling system with serial arranged blast and induced draft, the upper tube bundle is in an A-shaped arrangement mode, and the included angle between the two sides is 55-65 degrees; the lower tube bundle is arranged in a V shape, and the included angle between the two sides is 55-65 degrees;
in the direct air cooling system with the serial arrangement of the blast air and the induced air, the intermediate header is positioned between the upper tube bundle and the lower tube bundle, part of condensed water condensed by the upper tube bundle is discharged through the condensed water pipeline, uncondensed steam is distributed to the lower tube bundle for further condensation, and the thickness of a liquid film in the condensation process of the steam in the lower tube bundle is reduced.
After the technical scheme is adopted, the beneficial effects of the utility model are that: through combining A type blast type to arrange and V type induced air formula is arranged, can reduce direct air cooling's area greatly, can reduce the thickness of the interior liquid film of tube bank simultaneously, improve the heat exchange efficiency of tube bank, reduce heat transfer area, further reduced occupation of land space, greatly reduced direct air cooling's project investment.
Drawings
Fig. 1 is a schematic structural view of the present invention;
description of reference numerals: 1-upper tube bundle, 2-lower tube bundle, 3-steam distribution tube, 4-middle header, 5-condensed water header, 6-condensed water pipeline, 7-fan unit, 8-supporting structure and 9-wind-shield wall.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
embodiment 1 of the utility model: as shown in fig. 1, a direct air-cooling system in which blowing and induced draft are arranged in series, the system comprising: upper portion tube bank 1, lower part tube bank 2, steam distribution pipe 3, middle header 4, condensate header 5, condensate pipe 6, fan group 7, bearing structure 8, wind-break wall 9. The upper pipe bundle 1 is arranged above the fan unit 7 in an A-shaped arrangement mode; the lower tube bundle 2 is arranged below the fan unit 7 in a V-shaped arrangement mode; the steam distribution pipe 3 is connected with the upper pipe bundle 1 and uniformly distributes steam into the pipe bundle; the intermediate header 4 is located between the upper tube bundle 1 and the lower tube bundle 2; the condensed water header 5 is positioned below the lower tube bundle 2; and the condensed water pipeline 6 is connected with the intermediate header 4 and the condensed water header 5 and conveys the condensed water back to the thermodynamic cycle system. The fan unit 7 is located at the center of a space surrounded by the upper tube bundle 1 and the lower tube bundle 2. The supporting structure 8 is used for supporting all equipment, and an air inlet space is arranged below the supporting structure. The wind-break walls 9 are positioned around the upper part of the supporting structure and are flush with the top of the steam distribution pipe 3.
The upper tube bundle 1 is arranged above the fan set 7, and the fan set 7 drives air to flow through the outer side of the upper tube bundle 1 in a blowing mode; the lower tube bundle 2 is arranged below the fan set 7, and the fan set 7 drives air to flow through the outer side of the lower tube bundle 2 in an induced air mode;
the upper tube bundle 1 and the lower tube bundle 2 are composed of base tubes and external fins, the base tubes are single-row flat tubes or multi-row small circular tubes, the fins are snakelike aluminum fins or round steel fins, steam circulates inside the base tubes, and air circulates outside the base tubes;
the upper tube bundle 1 is arranged in an A-shaped mode, and the included angle between the two sides is 55-65 degrees; the lower tube bundle 2 is arranged in a V shape, and the included angle between the two sides is 55-65 degrees;
the intermediate header 4 is positioned between the upper tube bundle 1 and the lower tube bundle 2, part of condensed water condensed by the upper tube bundle 1 is discharged through the condensed water pipeline 6, uncondensed steam is distributed to the lower tube bundle 2 for further condensation, and the thickness of a liquid film in the steam condensation process in the lower tube bundle 2 is reduced.
Claims (5)
1. The utility model provides a direct air cooling system of blast air and induced air series arrangement which characterized in that: the system comprises:
the upper pipe bundle is arranged above the fan unit and is in an A-shaped arrangement mode;
the lower pipe bundle is arranged below the fan unit and is arranged in a V-shaped manner;
a steam distribution pipe connected to the upper tube bundle to uniformly distribute steam into the tube bundle;
an intermediate header positioned between the upper tube bundle and the lower tube bundle;
a condensate header located below the lower tube bundle;
the condensed water pipeline is connected with the intermediate header and the condensed water header and used for conveying condensed water back to the thermal power circulation system;
the fan set is positioned in the center of a space surrounded by the upper tube bundle and the lower tube bundle;
the supporting structure is used for supporting all equipment, and an air inlet space is arranged below the supporting structure;
and the wind-blocking walls are positioned on the periphery of the upper part of the supporting structure and are flush with the top of the steam distribution pipe.
2. A direct air cooling system with serial arrangement of blast and induced draft according to claim 1, wherein: the upper tube bundle is arranged above the fan set, and the fan set drives air to flow through the outer side of the upper tube bundle in a blowing mode; the lower tube bundle is arranged below the fan unit, and the fan unit drives air to flow through the outer side of the lower tube bundle in an induced air mode.
3. A direct air cooling system with serial arrangement of blast and induced draft according to claim 1, wherein: the upper tube bank and the lower tube bank are composed of base tubes and external fins, the base tubes are single-row flat tubes or multi-row small round tubes, the fins are snakelike aluminum fins or round steel fins, steam circulates inside the base tubes, and air circulates outside the base tubes through the fins.
4. A direct air cooling system with serial arrangement of blast and induced draft according to claim 1, wherein: the upper pipe bundle is arranged in an A-shaped mode, and the included angle between the two sides is 55-65 degrees; the lower tube bundle is arranged in a V shape, and the included angle between the two sides is 55-65 degrees.
5. A direct air cooling system with serial arrangement of blast and induced draft according to claim 1, wherein: the middle header is positioned between the upper tube bundle and the lower tube bundle, part of condensed water condensed by the upper tube bundle is discharged through a condensed water pipeline, uncondensed steam is distributed to the lower tube bundle for further condensation, and the thickness of a liquid film in the condensation process of the steam in the lower tube bundle is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123122111.4U CN216482360U (en) | 2021-12-14 | 2021-12-14 | Direct air cooling system with serial arrangement of blast air and induced air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123122111.4U CN216482360U (en) | 2021-12-14 | 2021-12-14 | Direct air cooling system with serial arrangement of blast air and induced air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216482360U true CN216482360U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123122111.4U Active CN216482360U (en) | 2021-12-14 | 2021-12-14 | Direct air cooling system with serial arrangement of blast air and induced air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216482360U (en) |
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2021
- 2021-12-14 CN CN202123122111.4U patent/CN216482360U/en active Active
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