CN113945100B - Device for adjusting flow field and temperature field homogenization of air cooling radiator for air cooling unit - Google Patents
Device for adjusting flow field and temperature field homogenization of air cooling radiator for air cooling unit Download PDFInfo
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- CN113945100B CN113945100B CN202111097771.3A CN202111097771A CN113945100B CN 113945100 B CN113945100 B CN 113945100B CN 202111097771 A CN202111097771 A CN 202111097771A CN 113945100 B CN113945100 B CN 113945100B
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- steam
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- air cooling
- pipeline
- steam distribution
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- 238000001816 cooling Methods 0.000 title claims abstract description 55
- 238000000265 homogenisation Methods 0.000 title claims abstract description 13
- 238000009826 distribution Methods 0.000 claims abstract description 42
- 238000009827 uniform distribution Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B11/00—Controlling arrangements with features specially adapted for condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/10—Auxiliary systems, arrangements, or devices for extracting, cooling, and removing non-condensable gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a device for adjusting flow field and temperature field homogenization of an air cooling radiator of an air cooling unit, which relates to the field of air cooling units and comprises a steam distribution pipe, wherein a forward flow unit and a reverse flow unit are arranged below the steam distribution pipe, a variable frequency fan is arranged below the forward flow unit, the reverse flow unit is connected with a vacuumizing pipeline, the vacuumizing pipeline is connected with a vacuum pump, the tail end of the steam distribution pipe is provided with a pressure transmitter, the tail end of the steam distribution pipe is connected with a vacuum adjustment pipeline, and an electric stop door is arranged on the vacuum adjustment pipeline; the heat exchange device can realize uniform distribution of the steam quantity entering each row of steam distribution pipes of the air cooling in a remote place, ensure uniform heat exchange in the whole air cooling island, realize the most efficient utilization of the air cooling fans, simultaneously realize heat exchange monitoring of each row of steam distribution pipes, uniformly distribute the steam entering each row of steam distribution pipes, maximally improve the heat exchange capacity of the whole air cooling island, reduce the steam discharge pressure of a unit and improve the economy of the unit.
Description
Technical Field
The invention relates to the technical field of air cooling units, in particular to a device for adjusting flow field and temperature field homogenization of an air cooling radiator of an air cooling unit.
Background
According to the Rankine cycle, a cooling medium is needed for cooling the unit exhaust steam in the thermal power plant, and water is used for cooling the exhaust steam and heat generated by the operation of auxiliary machines in the southern water-rich region, so that the stable operation of the main machine and the auxiliary machines and the complete operation of the Rankine cycle are ensured. However, in the three-north region, due to the lack of circulating water, the main stream thermal power unit adopts a large air-cooling condenser cooling unit to exhaust steam, and the direct air-cooling unit can save a large amount of water resources, but due to the low specific heat capacity of air, the required heat dissipation area is large, the conventional air-cooling condenser air cooling island adopts a multi-row arrangement mode, each row consists of a steam distribution pipe and a plurality of A-type cooling units, and each cooling unit consists of a fan and a plurality of flat aluminum pipe bundles with fins. Because of the formation of the large-scale air cooling island, the exhaust steam of the unit is unevenly distributed in each cooling unit and the fin tube bundles, the cooling capacity of the heat dissipation device of the air cooling island is reduced, the exhaust steam pressure is higher, and adverse effects are brought to the energy consumption and the safety of the unit under the working condition in summer.
As shown in fig. 1, the prior direct air cooling island is arranged in a row of air cooling condensers, different units are only different in number of columns and units in each column, and the illustration is only a schematic diagram. The unit exhaust steam enters the steam distribution pipe from the right side, 90-degree steering is carried out in the steam distribution pipe, then the unit exhaust steam enters the concurrent unit 3, heat exchange is carried out between steam and air in the concurrent unit, the air is conveyed by an axial flow fan 4 below the unit, uncondensed steam and uncondensed gas enter the countercurrent unit 2, the steam enters the steam exhaust device through a condensation water pipe after being condensed, and the uncondensed gas enters the vacuum pump 5 through a pipeline and then is discharged into the atmosphere.
Based on the above, the invention designs a device for adjusting the flow field and the temperature field homogenization of the air cooling radiator for an air cooling unit so as to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a device for adjusting the homogenization of a flow field and a temperature field of an air cooling radiator for an air cooling unit, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a device for adjusting air cooling radiator flow field and temperature field homogenization of air cooling unit, includes the steam distributing pipe, steam distributing pipe below is equipped with downstream unit and countercurrent unit, downstream unit below is equipped with the variable frequency fan, countercurrent unit is connected with the evacuation pipeline, the evacuation pipeline is connected with the vacuum pump, steam distributing pipe end is equipped with pressure transmitter, steam distributing pipe end-to-end connection has the vacuum regulation pipeline, the vacuum regulation pipeline is connected with the evacuation pipeline, be equipped with electronic stop gate on the vacuum regulation pipeline.
Preferably, the right end of the steam distributing pipe is a unit exhaust steam inlet end.
The application method of the device for adjusting the homogenization of the flow field and the temperature field of the air cooling radiator for the air cooling unit comprises the following specific steps:
step one: the exhaust steam of the unit enters from the right end of a steam distribution pipe, flows in the steam distribution pipe, distributes the exhaust steam, enters a downstream unit below, and condenses into water under the heat exchange of air in the downstream pipe bundle, and the air quantity is regulated by a variable-frequency fan;
step two: the non-condensed steam and non-condensed gas enter a countercurrent unit, the steam condensed water is water, the non-condensed gas enters a vacuum pump through a vacuumizing pipeline, the vacuum pump realizes the establishment of unit vacuum, and the non-condensed gas is discharged into the atmosphere;
step three: a set of remote pressure transmitter is additionally arranged at the tail end of each row of steam distribution pipes, and a vacuum adjusting pipeline with an electric stop door is arranged at the tail end of each steam distribution pipe and connected with a vacuumizing pipeline;
step four: during the operation of the unit, the pressure transmitter monitors the steam pressure change condition in each row of steam distribution pipes in real time, and redistributes the steam in each row of steam distribution pipes through the vacuum adjusting pipeline according to the pressure data, so that the steam quantity in different pipe rows is almost leveled, and the uniform distribution of the steam flow field and the temperature field in the whole air cooling island is achieved.
Compared with the prior art, the invention has the beneficial effects that:
the invention has novel structure, can realize the uniform distribution of the steam quantity entering each row of steam distribution pipes of the air cooling in a distant place, ensures uniform heat exchange in the whole air cooling island, can realize the most efficient utilization of the air cooling fans, avoids the excessively high frequency of the air cooling fans of certain units, increases the power consumption rate of the fans, supercools condensed water, can realize the heat exchange monitoring of each row of steam distribution pipes, uniformly distributes the steam entering each row of steam distribution pipes, maximally improves the heat exchange capacity of the whole air cooling island, reduces the steam discharge pressure of a unit and improves the economical efficiency of the unit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art air cooling unit;
FIG. 2 is a schematic diagram of the structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 2, the present invention provides a technical scheme of a device for adjusting flow field and temperature field homogenization of an air cooling radiator for an air cooling unit, which comprises: the device comprises a steam distribution pipe 3, a forward flow unit 7, a reverse flow unit 4, a variable frequency fan 5, a vacuumizing pipeline 9, a vacuum pump 6, a pressure transmitter 2, a vacuum adjusting pipeline 1 and an electric stop door 8; the tail end of each row of steam distribution pipes 3 is additionally provided with a set of remote pressure transmitters 2, the tail end of each steam distribution pipe 3 is provided with a vacuum adjusting pipeline 1 with an electric stop valve 8 and is connected with a vacuumizing pipeline 9, the pressure change condition of steam in each row of steam distribution pipes 3 is monitored in real time through the pressure transmitters 2 in the unit operation, and steam in each row of steam distribution pipes 3 is redistributed through the vacuum adjusting pipeline 1 according to pressure data, so that the steam quantity in different pipe rows is almost equal, and the uniform distribution of a steam flow field and a temperature field in the whole air cooling island is achieved.
The right end of the steam distributing pipe 3 is a unit exhaust steam inlet end.
The specific working principle is as follows:
the application method of the device for adjusting the homogenization of the flow field and the temperature field of the air cooling radiator for the air cooling unit comprises the following specific steps:
step one: the exhaust steam of the unit enters from the right end of the steam distribution pipe 3, flows in the steam distribution pipe 3, the steam distribution pipe 3 distributes the exhaust steam, enters a downstream unit 7 below, the steam in the downstream pipe bundle condenses into water under the heat exchange of air, and the air quantity is regulated by a variable-frequency fan 5;
step two: the uncondensed steam and the uncondensed gas enter a countercurrent unit 4, the steam condensate is water, the uncondensed gas enters a vacuum pump 6 through a vacuumizing pipeline 9, the vacuum pump 6 realizes the establishment of unit vacuum, and the uncondensed gas is discharged into the atmosphere;
step three: a set of remote pressure transmitter 2 is additionally arranged at the tail end of each row of steam distribution pipes 3, and a vacuum adjusting pipeline 1 with an electric stop door 8 is arranged at the tail end of each steam distribution pipe 3 and connected with a vacuumizing pipeline 9;
step four: during the operation of the unit, the pressure transmitter 2 monitors the steam pressure change condition in each row of steam distribution pipes 3 in real time, and redistributes the steam in each row of steam distribution pipes 3 through the vacuum adjusting pipeline 1 according to pressure data, so that the steam quantity in different pipe rows is almost leveled, and the uniform distribution of the steam flow field and the temperature field in the whole air cooling island is achieved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (2)
1. The utility model provides a device for adjusting air cooling radiator flow field and temperature field homogenization of air cooling unit, includes steam distribution pipe (3), steam distribution pipe (3) below is equipped with downstream unit (7) and countercurrent unit (4), downstream unit (7) below is equipped with variable frequency fan (5), countercurrent unit (4) are connected with evacuation pipeline (9), evacuation pipeline (9) are connected with vacuum pump (6), its characterized in that: the tail end of the steam distribution pipe (3) is provided with a pressure transmitter (2), the tail end of the steam distribution pipe (3) is connected with a vacuum adjustment pipeline (1), the vacuum adjustment pipeline (1) is connected with a vacuumizing pipeline (9), and the vacuum adjustment pipeline (1) is provided with an electric stop door (8);
the application method of the device for adjusting the homogenization of the flow field and the temperature field of the air cooling radiator of the air cooling unit comprises the following specific steps:
step one: the unit exhaust steam enters from the right end of the steam distribution pipe (3), flows in the steam distribution pipe (3), the steam distribution pipe (3) distributes the exhaust steam, enters a downstream unit (7) below, the steam in the downstream pipe bundle condenses into water under the heat exchange of air, and the air quantity is regulated by a variable-frequency fan (5);
step two: the non-condensed steam and non-condensed gas enter a countercurrent unit (4), the steam condensed water is water, the non-condensed gas enters a vacuum pump (6) through a vacuumizing pipeline (9), the vacuum pump (6) realizes the establishment of unit vacuum, and the non-condensed gas is discharged into the atmosphere;
step three: a set of remote pressure transmitter (2) is additionally arranged at the tail end of each row of steam distribution pipes (3), and a vacuum adjusting pipeline (1) with an electric stop door (8) is arranged at the tail end of each steam distribution pipe (3) and connected with a vacuumizing pipeline (9);
step four: during the operation of the unit, the pressure transmitter (2) monitors the steam pressure change condition in each row of steam distribution pipes (3) in real time, and redistributes the steam in each row of steam distribution pipes (3) through the vacuum adjusting pipeline (1) according to pressure data, so that the steam quantity in different pipe rows is almost leveled, and the uniform distribution of the steam flow field and the temperature field in the whole air cooling island is achieved.
2. The device for adjusting the flow field and the temperature field homogenization of an air-cooled radiator for an air-cooled unit according to claim 1, wherein: the right end of the steam distributing pipe (3) is a unit exhaust steam inlet end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111097771.3A CN113945100B (en) | 2021-09-18 | 2021-09-18 | Device for adjusting flow field and temperature field homogenization of air cooling radiator for air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111097771.3A CN113945100B (en) | 2021-09-18 | 2021-09-18 | Device for adjusting flow field and temperature field homogenization of air cooling radiator for air cooling unit |
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| Publication Number | Publication Date |
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| CN113945100A CN113945100A (en) | 2022-01-18 |
| CN113945100B true CN113945100B (en) | 2024-02-20 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB908806A (en) * | 1959-08-20 | 1962-10-24 | Happel Gmbh | Improvements in or relating to surface condensers |
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| CN103267425A (en) * | 2013-05-30 | 2013-08-28 | 深圳市广前电力有限公司 | Method and device for solving condenser low vacuum in combined cycle unit starting process |
| CN106225501A (en) * | 2016-08-31 | 2016-12-14 | 华能白山煤矸石发电有限公司 | A kind of Freezing of Direct Air-Cooled Condenser Unit system and method |
| CN208936802U (en) * | 2018-08-16 | 2019-06-04 | 华电重工股份有限公司 | A kind of direct air cooling system and its vacuumize module |
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2021
- 2021-09-18 CN CN202111097771.3A patent/CN113945100B/en active Active
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| CN103217025A (en) * | 2013-05-06 | 2013-07-24 | 华北电力大学 | Air-cooling condenser structure containing horizontal shaft axial flow fan group |
| CN103267425A (en) * | 2013-05-30 | 2013-08-28 | 深圳市广前电力有限公司 | Method and device for solving condenser low vacuum in combined cycle unit starting process |
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| CN111288813A (en) * | 2020-02-18 | 2020-06-16 | 暨南大学 | Serial-type cooling system and air cooling island system |
| CN213363450U (en) * | 2020-10-16 | 2021-06-04 | 昕净洁(江苏)能源科技有限公司 | Energy-saving system for intelligent pressure regulation and optimized heat exchange of direct air cooling |
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