CN211903801U - Water-saving and demisting system for cooling tower - Google Patents
Water-saving and demisting system for cooling tower Download PDFInfo
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- CN211903801U CN211903801U CN202020378576.2U CN202020378576U CN211903801U CN 211903801 U CN211903801 U CN 211903801U CN 202020378576 U CN202020378576 U CN 202020378576U CN 211903801 U CN211903801 U CN 211903801U
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Abstract
The utility model relates to a system of cooling tower water conservation defogging belongs to industry water conservation field. The utility model discloses a cooling tower water conservation defogging system includes the tower body, high-pressure ionization device, high-voltage electrostatic device and receipts hydrophone, it carries out positive polarity ionization and negative polarity ionization simultaneously to saturated humid air in the tower, make the vapor molecule carry on positive charge and negative charge respectively and form the ionic state, then get into same high-voltage electric field, the vapor molecule of ionic state alternating motion inter attraction and the tiny droplet that condenses in high-voltage electric field, and further reunion and the rivers that condense as condensation nucleus with the droplet, reduce the moisture content of humid air with this and realize the purpose of cooling tower water conservation defogging, also retrieved the cooling water in the defogging, application scope is wide, the running cost is low, it is efficient to economize on water.
Description
Technical Field
The utility model relates to a system of cooling tower water conservation defogging belongs to industry water conservation field.
Background
In the prior art, the cooling tower mainly realizes cooling of circulating water in a form of latent heat of evaporation in the processes of heat transfer and mass transfer with air through the circulating water flowing from top to bottom, and simultaneously increases the moisture content of the air. Because the temperature outside the tower is low, saturated wet air in the tower is condensed and condensed after being discharged out of the cooling tower, and water vapor is discharged into the atmospheric environment in the form of fog drops, thereby causing the waste of circulating water. The water consumption lost in the form of evaporation is evaporation loss, accounts for 1.2-1.5% of the total amount of circulating water, accounts for 30-50% of the total amount of water consumed by a power plant, and is the largest water consumption index of the power plant.
According to the evaporation loss generation process, because the environmental temperature cannot be changed, the conventional water-saving and fog-dispersing way of the cooling tower at present mainly changes the thermodynamic state of saturated wet air in the tower, and the specific technologies comprise a heating type, a dry-wet mixing type and a condensation type. The heating type is that the temperature of the wet air out of the tower is increased by heating, and the aim of demisting outside the tower is achieved by reducing the relative humidity, so that the method does not reduce the absolute water content of the wet air, only eliminates visual pollution and does not have the function of water saving; the dry-wet mixing type is that the temperature of air entering the tower is increased to form dry and hot air, so that the state line of the mixed wet air is below the saturated state line, and further the tower white fog is eliminated, and the method is similar to the heating type and has no water-saving function; the condensation method is characterized in that saturated wet air in the tower is cooled and condensed by additionally arranging heat exchange equipment, condensed water is collected by utilizing an original water collector, and a condensing device and a water collecting device are additionally arranged at the outlet of the cooling tower.
Based on the principle of electric dust removal, the electric defogging device has wider application in the aspect of defogging, but the electric defogging technology can only collect fog drop particles and has no dehumidification effect. Accordingly, the chinese utility model patent publication No. CN108895857A discloses an electric defogging device installed at the outlet of a cooling tower, wherein an airflow channel is provided at the bottom of an electric defogger and the top of the cooling tower, and it is expected that the saturated humid air is naturally cooled by the dry and cold air outside the tower to separate out water mist, and then the water mist is collected by the electric defogger to achieve the purpose of water saving and defogging. However, considering the fixing of the electric demister and the bearing of the cooling tower pair, the height of the air flow channel between the electric demister and the cooling tower is very narrow, and the effect of separating out the white mist by natural cooling is poor, so that the water-receiving and demisting effect of the electric demister is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that proposes in the above-mentioned background problem, provide a system of cooling tower water conservation defogging, it is applicable in the water conservation defogging project of the most cooling towers at present, and to the amount of wind of saturated humid air, temperature, moisture content's application scope very wide range in the cooling tower, can last steady operation for a long time, does not increase system resistance basically to water conservation is efficient, the defogging effect is showing, operation safe and reliable.
The purpose of the utility model is realized like this: a water-saving demisting system for a cooling tower comprises a tower body, a high-voltage ionization device, a high-voltage electrostatic device and a water collector;
the high-voltage ionization device and the high-voltage electrostatic device are both vertically arranged in the tower body, the high-voltage ionization device is arranged below the high-voltage electrostatic device, and saturated wet air sequentially passes through the high-voltage ionization device and the high-voltage electrostatic device from bottom to top;
the high-pressure ionization device is cylindrical and is positioned above the middle part in the tower body;
the high-voltage ionization device comprises an ionization device shell, and a positive polarity ionization device and a negative polarity ionization device which are positioned in the ionization device shell;
the positive polarity ionization device is formed by driving a plurality of ionization units by a positive polarity high-voltage direct current power supply;
the negative polarity ionization device is formed by driving a plurality of ionization units by a negative polarity high-voltage direct current power supply.
The ionization unit comprises an ionization unit line electrode and an ionization unit plate electrode, and all the ionization unit plate electrodes are connected with the ionization device shell and grounded;
the left half part of the ionization unit line electrode is connected with the high-voltage end of the positive polarity high-voltage direct-current power supply, and the right half part of the ionization unit line electrode is connected with the high-voltage end of the negative polarity high-voltage direct-current power supply;
and the low-voltage ends of the positive polarity high-voltage direct current power supply and the negative polarity high-voltage direct current power supply are respectively connected with the ionization device shell.
The high-voltage electrostatic device is cylindrical and is arranged above the high-voltage ionization device and close to the outlet of the tower body;
the high-voltage electrostatic device comprises an electrostatic device shell;
the high-voltage electrostatic device is composed of a plurality of electrostatic units, and the plurality of electrostatic units are driven by a high-voltage direct-current power supply or a high-voltage alternating-current power supply.
The electrostatic unit comprises an electrostatic unit line electrode and an electrostatic unit plate electrode;
all the electrostatic unit line electrodes are connected with the high-voltage end of a high-voltage direct-current power supply or a high-voltage alternating-current power supply;
all the electrostatic unit plate electrodes are connected with the electrostatic device shell and are grounded;
the electrostatic device shell is connected with the low-voltage end of the high-voltage direct-current power supply or the high-voltage alternating-current power supply.
The water collector is a semicircular groove and is arranged under a plate electrode of the high-voltage electrostatic device, and two ends of the water collector are connected with the electrostatic device shell.
Compared with the prior art, the utility model has the advantages of it is following:
1. the ionization device is arranged in a hollow area in the tower, and the original equipment layout of the cooling tower is not required to be changed;
2. the high-voltage electrostatic device is directly arranged on the outlet layer of the cooling tower, so that the construction is easy;
3. the ionization device and the high-voltage electrostatic device are both of hollow structures, and the system resistance is not increased;
4. the ionization device generates a large amount of high-activity free radicals, pollutants, bacteria and algae in saturated wet air can be treated and inactivated, and the purity of circulating water is improved;
5. the water collection efficiency is more than 10 times higher than that of a single-area electric demister, and the water collection efficiency is high;
6. the device can continuously operate for a long time, the discharge output voltage is low, and the operation is safe and stable;
7. the application range of the wet air flow, the temperature and the humidity is wide.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of a system for saving water and demisting for a cooling tower.
Fig. 2 is a schematic top view of the high-pressure ionization device of embodiment 1 of the water-saving and demisting system of the cooling tower of the present invention.
Fig. 3 is a schematic top view of the high voltage electrostatic device of embodiment 1 of the water-saving and demisting system of the cooling tower of the present invention.
Fig. 4 is a schematic side view of a single water collector in embodiment 1 of the water-saving and demisting system for a cooling tower.
Fig. 5 is a schematic top view of the high-pressure ionization device of embodiment 2 of the water-saving and demisting system of the cooling tower of the present invention.
Fig. 6 is a schematic top view of the high voltage electrostatic device of embodiment 3 of the system for saving water and demisting in a cooling tower of the present invention.
Wherein:
1. a tower body; 2. 2.1 parts of a high-voltage ionization device, 2.1 parts of ionization unit line electrodes, 2.2 parts of ionization units, 2.3 parts of ionization unit plate electrodes, 2.4 parts of positive polarity high-voltage direct-current power supply, 2.5 parts of negative polarity high-voltage direct-current power supply and 2.6 parts of an ionization device shell; 3. 3.1 parts of a high-voltage electrostatic device, 3.1 parts of electrostatic unit line electrodes, 3.2 parts of electrostatic units, 3.3 parts of electrostatic unit plate electrodes, 3.4 parts of a high-voltage direct-current power supply, 3.5 parts of an electrostatic device shell, 3.6 parts of high-voltage plate electrodes, 3.7 parts of a high-voltage alternating-current power supply; 4. a water collector.
Detailed Description
The invention is described below with reference to the accompanying drawings and specific embodiments:
example 1:
as shown in fig. 1 to 4, a water-saving demisting system for a cooling tower comprises a tower body 1, a high-voltage ionization device 2, a high-voltage electrostatic device 3 and a water collector 4;
the high-voltage ionization device 2 and the high-voltage electrostatic device 3 are both vertically arranged in the tower body 1, the high-voltage ionization device 2 is arranged below the high-voltage electrostatic device 3, and saturated wet air sequentially passes through the high-voltage ionization device 2 and the high-voltage electrostatic device 3 from bottom to top;
the high-voltage ionization device 2 is cylindrical and is positioned above the middle part in the tower body 1;
the high-voltage ionization device 2 comprises an ionization device shell 2.6 and a positive polarity ionization device and a negative polarity ionization device which are positioned in the ionization device shell;
the positive polarity ionization device is formed by driving a plurality of ionization units 2.2 by a positive polarity high-voltage direct current power supply 2.4;
the negative polarity ionization device is formed by driving a plurality of ionization units 2.2 by a negative polarity high-voltage direct current power supply 2.5;
the ionization unit 2.2 comprises an ionization unit line electrode 2.1 and ionization unit plate electrodes 2.3, and all the ionization unit plate electrodes 2.3 are connected with the ionization device shell 2.6 and grounded;
the left half part of the ionization unit line electrode 2.1 is connected with the high-voltage end of a positive polarity high-voltage direct current power supply 2.4, and the right half part is connected with the high-voltage end of a negative polarity high-voltage direct current power supply 2.5;
the low-voltage ends of the positive polarity high-voltage direct current power supply 2.4 and the negative polarity high-voltage direct current power supply 2.5 are respectively connected with the ionization device shell 2.6.
In the embodiment, the ionization device shell 2.6 is made of carbon steel metal; the ionization unit line electrode 2.1 and the ionization unit plate electrode 2.3 are made of stainless steel metal.
In this embodiment, the ionization unit 2.2 may be of the above-mentioned line-plate type structure, and may also be of the line-honeycomb type structure;
when the ionization unit 2.2 is a line-honeycomb structure, it comprises an ionization unit line electrode and a honeycomb electrode, the ionization unit line electrode is connected with the high-voltage end of the high-voltage direct-current power supply, and the honeycomb electrode is connected with the low-voltage end of the high-voltage direct-current power supply and is grounded.
In the embodiment, the positive-polarity ionization device and the negative-polarity ionization device are arranged in parallel, and saturated wet air flows through the positive-polarity ionization device and the negative-polarity ionization device from bottom to top to form wet air in an ionic state.
In this embodiment, in order to improve the charge amount and the ionization degree of the ionic wet air, preferably, the output voltage of the positive polarity high voltage direct current power supply is greater than or equal to 35kV, and the output current is greater than or equal to 200 mA; the output voltage of the negative polarity high-voltage direct-current power supply is more than or equal to 40kV, and the output current is more than or equal to 200 mA; the output frequency of the positive polarity and negative polarity high-voltage direct current power supply is 50 Hz-300 Hz; under the condition of keeping the lowest output current to operate, the required output voltage is lowest, the power consumption is saved, the insulation requirement between high-voltage electrodes and low-voltage electrodes is reduced, the safety distance is shortened, and the space utilization rate in the tower is improved.
In the present embodiment, the high voltage electrostatic device 3 is cylindrical and is disposed above the high voltage ionization device 2 and near the outlet of the tower body 1;
the high-voltage electrostatic device 3 comprises an electrostatic device housing 3.5.
In the present embodiment, the high voltage electrostatic device 3 is composed of a plurality of electrostatic units 3.2, and the plurality of electrostatic units 3.2 are driven by a high voltage dc power supply 3.4.
The electrostatic unit 3.2 comprises an electrostatic unit line electrode 3.1 and an electrostatic unit plate electrode 3.3;
all the electrostatic unit line electrodes 3.1 are connected with the high-voltage end of a high-voltage direct-current power supply 3.4;
all the electrostatic unit plate electrodes 3.3 are connected with the electrostatic device shell 3.5 and are grounded;
the electrostatic device housing 3.5 is connected to the low voltage side of the high voltage dc power supply 3.4.
In this embodiment, the electrostatic device housing 3.5 is made of carbon steel metal; the electrostatic unit line electrode 3.1 and the electrostatic unit plate electrode 3.3 are made of stainless steel metal.
In the present embodiment, the electrostatic unit 3.2 is of a line-and-plate type structure.
In the embodiment, in order to enhance the strength and collision probability of the staggered movement of ionic water molecules in a high-voltage electric field, when the electrostatic unit of the high-voltage electrostatic device adopts a line-plate structure, the output voltage of the direct-current power supply is more than or equal to 40kV, the output current is less than or equal to 200mA, the output voltage of the alternating-current power supply is more than or equal to 30kV, and the output current is less than or equal to 200 mA;
when the high-voltage device electrostatic unit adopts a plate-plate structure, the output voltage of the direct-current power supply is more than or equal to 50kV, the output current is less than or equal to 1mA, the output voltage of the alternating-current power supply is more than or equal to 45kV, and the output current is less than or equal to 1 mA;
the required output voltage is minimum under the condition of keeping the maximum output current, the power consumption is saved, the insulation requirement between high and low voltage electrodes is reduced, the safety distance is shortened, and the utilization rate of the space outside the tower is improved.
In this embodiment, the water collector 4 is a semicircular groove, and is installed right below the electrostatic unit plate electrode 3.3 of the high-voltage electrostatic device 3, and two ends of the water collector are connected with the electrostatic device housing 3.5.
In this embodiment, the utility model relates to a system of cooling tower water conservation defogging, positive polarity ionization device is flowed through to saturated humid air part in the tower, negative polarity ionization device is flowed through to the part, form positive polarity and the wet air of negative polarity ionic state respectively, same high-voltage electrostatic device 3 of flowing through jointly again, staggered movement under the effect of high-voltage electrostatic field, the hydrone of xenogenesis electric charge condenses into tiny droplet granule, further reunite and condense into rivers under the effect of droplet as condensation nucleus simultaneously, it accomplishes the water conservation defogging to drop into water collector 4 under the action of gravity along the plate electrode.
In this embodiment, the utility model relates to a method of cooling tower water conservation defogging as follows:
the system is started, saturated wet air in the tower body 1 firstly flows through positive polarity ionization units 2.2 and negative polarity ionization units 2.2 in the high-voltage ionization device 2 from bottom to top respectively, through positive polarity corona discharge and negative polarity corona discharge, the ionization units 2.2 are filled with a large amount of positive charges and negative charges, water molecules in the wet air capture the positive charges and the negative charges, and the wet air in an ionic state is formed by the self-charged positive charges and negative charges; then the water flows through the high-voltage electrostatic device 3, the electrostatic unit 3.2 forms a high-voltage electrostatic field in a single direction under the drive of the same high-voltage direct-current power supply 3.4, so that the moving directions of water molecules carrying positive charges and negative charges are different, the water molecules carrying different charges are mutually attracted and condensed into fine fog drops by the staggered movement of the ionic wet air under the action of the high-voltage electrostatic field, meanwhile, the fog drops are further agglomerated and condensed into large liquid drops by taking the fog drops as condensation nuclei, and the water flows are converged on an electrostatic unit plate electrode 3.3 of the high-voltage electrostatic device 3 and fall into the water collector 4; the whole process not only can change the vapor in the saturated humid air in the cooling tower into fog drops, but also can recover the evaporation loss of the cooling tower while demisting, thereby greatly reducing the evaporation water consumption, eliminating the visual pollution of the white water mist at the outlet of the cooling tower and simultaneously playing a certain purification role on the circulating water.
Example 2:
as shown in fig. 5, the embodiment 2 of the present invention is different from the embodiment 1, the positive polarity and negative polarity ionization units 2.2 of the high voltage ionization device 2 are arranged in a staggered manner, when the saturated humid air in the cooling tower passes through the high voltage ionization device 2, the horizontal distance between the humid air in the positive polarity ionic state and the humid air in the negative polarity ionic state is very close, and the humid air in the positive polarity ionic state and the humid air in the negative polarity ionic state can be mutually attracted and condensed into fog drops before entering the high voltage electrostatic device 3, so that the water condensation effect of the humid air in the ionic state in the high voltage electrostatic device 3 is greatly improved;
other technical features and technical methods of the embodiment 2 are the same as those of the embodiment 1.
Example 3:
as shown in fig. 6, the embodiment 3 of the present invention is different from the embodiment 1, and the electrostatic unit 3.2 of the high voltage electrostatic device 3 adopts a plate-plate structure;
when the electrostatic unit 3.2 is in a plate-plate structure, the electrostatic unit comprises a high-voltage plate electrode and a plate electrode, wherein the high-voltage plate electrode is connected with the high-voltage end of a high-voltage power supply, and the plate electrode is connected with the low-voltage end of the high-voltage power supply and is grounded;
the high-voltage power supply adopts a high-voltage alternating current power supply 3.7, and the high-voltage end of the high-voltage power supply is connected with a high-voltage plate electrode 3.6.
In this embodiment, the electric field distribution of the plate-plate electrostatic unit 3.2 is more uniform, and the directions of the high-voltage electric fields are changed alternately at different times, so that the staggered movement of water molecules with different charged polarities in the ionic wet air is greatly enhanced, the collision probability among the water molecules with different polarities is further enhanced, and the water coagulation efficiency of the ionic wet air is remarkably improved.
Other technical features and technical methods of the embodiment 3 are the same as those of the embodiment 1.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a system for cooling tower water-saving defogging, includes tower body (1), its characterized in that: the device also comprises a high-voltage ionization device (2), a high-voltage electrostatic device (3) and a water collector (4);
high-voltage ionization device (2) and high-voltage electrostatic device (3) are vertical the inside of arranging in tower body (1), high-voltage ionization device (2) set up the below at high-voltage electrostatic device (3), and saturated humid air passes through high-voltage ionization device (2) and high-voltage electrostatic device (3) from bottom to top in proper order.
2. The system for saving water and demisting for the cooling tower as claimed in claim 1, wherein: the high-pressure ionization device (2) is cylindrical and is positioned above the middle part in the tower body (1);
the high-voltage ionization device (2) comprises an ionization device shell (2.6) and a positive-polarity ionization device and a negative-polarity ionization device which are positioned in the ionization device shell;
the positive polarity ionization device is formed by driving a plurality of ionization units (2.2) by a positive polarity high-voltage direct current power supply (2.4);
the negative polarity ionization device is formed by driving a plurality of ionization units (2.2) by a negative polarity high-voltage direct current power supply (2.5).
3. The system for saving water and demisting for the cooling tower as claimed in claim 2, wherein: the ionization unit (2.2) comprises an ionization unit line electrode (2.1) and ionization unit plate electrodes (2.3), and all the ionization unit plate electrodes (2.3) are connected with the ionization device shell (2.6) and grounded;
the left half part of the ionization unit line electrode (2.1) is connected with the high-voltage end of a positive polarity high-voltage direct current power supply (2.4), and the right half part of the ionization unit line electrode is connected with the high-voltage end of a negative polarity high-voltage direct current power supply (2.5);
the low-voltage ends of the positive polarity high-voltage direct current power supply (2.4) and the negative polarity high-voltage direct current power supply (2.5) are respectively connected with the ionization device shell (2.6).
4. The system for saving water and demisting for the cooling tower as claimed in claim 1, wherein: the high-voltage electrostatic device (3) is cylindrical and is arranged above the high-voltage ionization device (2) and close to the outlet of the tower body (1);
the high-voltage electrostatic device (3) comprises an electrostatic device housing (3.5);
the high-voltage electrostatic device (3) is composed of a plurality of electrostatic units (3.2), and the plurality of electrostatic units (3.2) are driven by a high-voltage direct-current power supply (3.4) or a high-voltage alternating-current power supply (3.7).
5. The system for saving water and demisting a cooling tower as claimed in claim 4, wherein: the electrostatic unit (3.2) comprises an electrostatic unit line electrode (3.1) and an electrostatic unit plate electrode (3.3);
all the electrostatic unit line electrodes (3.1) are connected with the high-voltage end of a high-voltage direct-current power supply (3.4) or a high-voltage alternating-current power supply (3.7);
all the electrostatic unit plate electrodes (3.3) are connected with the electrostatic device shell (3.5) and are grounded;
the electrostatic device shell (3.5) is connected with the low-voltage end of a high-voltage direct-current power supply (3.4) or a high-voltage alternating-current power supply (3.7).
6. The system for saving water and demisting for the cooling tower as claimed in claim 1, wherein: the water collector (4) is a semicircular groove and is arranged right below a plate electrode (3.3) of the high-voltage electrostatic device (3), and two ends of the water collector are connected with the electrostatic device shell (3.5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020378576.2U CN211903801U (en) | 2020-03-24 | 2020-03-24 | Water-saving and demisting system for cooling tower |
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| CN202020378576.2U CN211903801U (en) | 2020-03-24 | 2020-03-24 | Water-saving and demisting system for cooling tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935198A (en) * | 2022-05-19 | 2022-08-23 | 李新坤 | Air purifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935198A (en) * | 2022-05-19 | 2022-08-23 | 李新坤 | Air purifier |
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