CN210367087U - Algae removal system of cooling tower - Google Patents
Algae removal system of cooling tower Download PDFInfo
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- CN210367087U CN210367087U CN201921097901.1U CN201921097901U CN210367087U CN 210367087 U CN210367087 U CN 210367087U CN 201921097901 U CN201921097901 U CN 201921097901U CN 210367087 U CN210367087 U CN 210367087U
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Abstract
The utility model discloses a cooling tower removes algae system, the cooling tower is wet cooling tower or dry and wet cooling tower, and this cooling tower has water distribution system and water catch tray, the cooling tower removes algae system and includes: the water inlet grille is arranged at the water collecting port of the water collecting tray and is made of an electric conduction material; and the positive pole of the direct current power supply is connected with the water inlet grille through a cable, and the negative pole of the direct current power supply is connected with the tray body of the water collecting tray. According to the utility model discloses a cooling tower removes algae system can effectively restrain the alga and breed.
Description
Technical Field
The utility model relates to a cooling tower removes algae system.
Background
The Cooling Tower (The Cooling Tower) is a Cooling device commonly used in industry, which uses water as a circulating coolant, and The circulating water carries out heat of equipment to be cooled and dissipates The heat to The atmosphere under open conditions. The cooling tower looks like a barrel-shaped structure, and the tower-shaped structure is called a cooling tower, and the heat dissipation modes of the cooling tower mainly comprise radiation heat transfer, convection heat transfer and evaporation heat dissipation. Because the cooling tower is of an open structure and the water temperature is moderate, algae and plants are easy to breed in the circulating water of the cooling tower.
Algae belongs to organic matters, has a certain life cycle, and is easy to deteriorate water quality due to dead algae. And the algae are also highly susceptible to clumping and agglomeration, which can easily lead to blockage of, for example, a condenser if entering the circulation system. Algae pose a significant hazard to the proper operation of cooling towers, and therefore many solutions have been proposed in the art for algae.
For example, chinese patent document CN109516588A discloses a cooling tower water treatment purifier, which is provided with an ozone generator and a sodium ion exchanger on a cooling tower circulating system, wherein the ozone generator is used for oxidizing bacteria and algae in the cooling water flowing out of the cooling tower. Because the ozone generator can only be used in a small range at present, the ozone generator is usually configured on a pipeline of a circulating system and cannot be arranged at a water collecting tray of a cooling tower with a relatively large water area, and the water flow speed at the water collecting tray is low, so that algae and plants are easy to attach and breed. The algae carried into the circulating system pipeline are relatively small plants, and the algae on the side of the water collecting tray cannot be removed.
Chinese patent document CN207472089U discloses a cooling tower with a filtering device, which first reduces the hardness of water and then filters slime and algae by using the filtering device. Generally speaking, many algae will have some silt attached at the same time because the cooling tower belongs to extensive open cooling system, water is general industrial water, the impurity content of water is also great, the filter equipment of simple use will produce the jam in short time often, and filter equipment is the part on the circulation pipeline, once its jam, the circulation system then can't normally work.
Chinese patent document CN108675384A adopts other methods to achieve algae removal, and specifically provides a bacteria and algae preventing coating for a natural light response circulating water cooling tower. The cooling tower is of an open structure, the whole system is wide in distribution, and particularly the water collecting tray has a very large area. In addition, the coating belongs to an open structure, and the coating can be quickly buried by silt in rough operation, so that the function of preventing bacteria and algae cannot be achieved.
Chinese patent document CN109912049A discloses a metal cooling tower circulation cooling water treatment system, which uses specific frequency electromagnetic waves to purify water and inhibit bacteria and algae, wherein the propagation distance of the electromagnetic waves in the water is limited, and the installation position of the electromagnetic waves is relatively limited, and the electromagnetic waves can only be installed at the place where the water is formed, such as a water collection tray, and the simple electromagnetic waves have poor bacteriostatic effect.
Disclosure of Invention
An object of the utility model is to provide a cooling tower that can effectively restrain algae breeding removes algae system.
An embodiment of the utility model provides a cooling tower removes algae system, the cooling tower is wet cooling tower or dry and wet cooling tower, and this cooling tower has water distribution system and water catch tray, the cooling tower removes algae system and includes:
the water inlet grille is arranged at the water collecting port of the water collecting tray and is made of an electric conduction material; and
and the positive pole of the direct current power supply is connected with the water inlet grille through a cable, and the negative pole of the direct current power supply is connected with the disc body of the water collecting disc.
Optionally, the water inlet grille of the cooling tower algae removal system is a vertical enclosure structure and surrounds the periphery of the water collecting port;
the distance between the water inlet grille and the water collecting opening is 0.8-2.5 m.
Optionally, the power of the direct current power supply is 500-1000W, and the working voltage is 220-380V.
Optionally, a secondary filter is mounted on the water distribution system opposite the water inlet grate.
Optionally, the secondary filter is a mesh cage filter.
Optionally, an ultraviolet sterilizer is installed on the water distribution system.
Optionally, the uv sterilizer is located at the next stage of the secondary filter.
Optionally, an ozone generator is provided in the water distribution system;
correspondingly, a buffer water tank is arranged on a pipeline of the water distribution system, and the ozone generated by the ozone generator is introduced into the buffer water tank through an aeration head.
Optionally, the ultraviolet sterilizer is an ultraviolet sterilizing lamp installed inside the buffer water tank or isolated from the water inside the buffer water tank by a glass cover plate.
Optionally, the circulation pump of the water distribution system is a circulation pump driven by a variable frequency motor.
Generally, a water collection port of a water collection tray of the cooling tower is provided with a water inlet grille, the water inlet grille is usually made of metal, more specifically, stainless steel is mostly adopted, and the water inlet grille belongs to a good electric conductor. The embodiment of the utility model provides an in, utilize the electric conductivity of grid of intaking, adaptation DC power supply, this DC power supply's positive pole passes through cable junction with the grid of intaking, and DC power supply's negative pole then is connected with the disk body of water-collecting tray, forms electrochemical reaction, can effectually destroy organic matter, for example the biostructure of alga to owing to can destroy organic matter, can not make water take place to milden and rot. In addition, the cooling tower belongs to an open extensive cooling device, and the used water is directly supplied by municipal water in many applications, even the used water is reclaimed water, the hardness of the water is higher, and the impurity content is higher. Based on the electrochemical reaction, positive ions in the water, such as calcium ions, magnesium ions, etc., are adsorbed, and the salt deposition is accelerated, so that the corrosion to the equipment can be reduced. Because the organic matter can be destroyed, the biological clusters are not easy to form, and therefore, the jam on the side of the water distribution system is not easy to generate in the normal operation process.
Drawings
FIG. 1 is a schematic block diagram of a cooling tower algae removal system in one embodiment.
In the figure: 1. the device comprises a water collecting disc, 2 water collecting ports, 3 water inlet grids, 4 water outlet pipes, 5 water return pipes, 6 rectifier bridges, 7 circulating pumps, 8 isolation transformers, 9 net cage filters, 10 commercial power, 11 ultraviolet sterilizing lamps and 12 ozone generators.
Detailed Description
Referring to the description of fig. 1, the water distribution system of the cooling tower is an open circulation system, wherein a water return pipe 5 and a water outlet pipe 4 are used for connecting the cooling tower with an application system, such as an air conditioning system, a pipeline of the water distribution system is provided with a heat exchanger, for example, and the heat fluid side of the heat exchanger is a fluid pipeline of the application system, such as a pipeline of the air conditioning system.
The water outlet pipe 4 side of the cooling tower is generally provided with a water distributor, for example, and the water distributor adopts a spraying mode, for example, to increase the contact area with air and realize air cooling. Due to the open structure, water evaporation can generate water loss on one hand, and on the other hand, salt accumulation in a circulating system is increased, such as calcium salt and magnesium salt, along with the evaporation of cooling water, the concentration of salt carried by the water is increased, the salt content is higher, and the corrosion speed of equipment is increased.
In addition, after the water is discharged from the cooling tower side, the water is usually collected by a water collecting tray 1 (also called a water collecting tank or a water collecting tank), and then the water is sent to the water distribution system by a pump suction pump through a water collecting port 2, and the pump is generally a circulating pump 7 as shown in fig. 1.
The cooling tower mainly comprises five basic types, namely a standard type (the water temperature of the inlet tower is 37 ℃ and the water temperature of the outlet tower is 32 ℃), a medium temperature type (the water temperature of the inlet tower is 43 ℃ and the water temperature of the outlet tower is 33 ℃), a high temperature type (the water temperature of the inlet tower is 60 ℃ and the water temperature of the outlet tower is 35 ℃), an ultrahigh temperature type (the water temperature of the inlet tower is 90 ℃ and the water temperature of the outlet tower is 35 ℃), a large-scale tower (the water temperature of the inlet tower is 42 ℃ and the water temperature of the outlet tower is 32 ℃), the scaling temperature of water is 67.5 ℃, and in some cooling towers, the water enters a scaling area, the hardness of the water needs to be.
Due to the appropriate water temperature (mainly considering the tower water temperature), microorganisms are easy to grow on the cooling tower side, and when the microorganisms are clustered and once stirred up and enter the water return pipe 5, the jamming of the equipment on the water distribution system side may occur. In addition, microbial spoilage can further degrade water quality.
Regarding the cooling tower, the cooling tower is divided into three types according to the contact mode of cooling water and air, namely, a wet cooling tower, a dry cooling tower and a dry cooling tower, wherein the wet cooling tower or the dry cooling tower can generate direct contact of cooling water and air, therefore, the embodiment of the algae removal system of the cooling tower of the utility model is mainly applied to the two types of cooling towers.
The wet cooling tower or the dry cooling tower is provided with a water distribution system and a water collecting tray 1, the water collecting tray 1 is approximately in a shape of a pool or a groove, water after heat exchange with air in a spraying mode is collected at the water collecting tray 1 and enters a water collecting opening 2, a water opening is arranged in the water collecting opening 2, the water opening is connected with a water return pipe 5, and the water opening is sent to the water distribution system through a circulating pump 7.
Since, for example, the water inlet grate 3 is of an originally existing configuration and does not change the load of the water distribution system, a conventional circulation pump can be used in connection with the circulation pump 7 without having to be re-modelled.
In a specific application, the water inlet grille 3 can be configured in two ways, or can be used in both ways, wherein one way is a cofferdam type structure, the water inlet grille 3 encloses the water collecting opening 2, and the water enters the water collecting opening 2 through the water inlet grille 3, and the other way is a cover plate type structure, and the water inlet grille 3 is directly used for covering the water collecting opening, which is similar to a grate plate structure.
No matter which kind of water inlet grille 3, its most commonly used material all is stainless steel material, and the more adoption stainless steel net of cofferdam formula structure, apron formula structure are the comb board structure usually.
And providing a direct current power supply, wherein the positive pole of the direct current power supply is connected with the water inlet grid 3 through a cable, and the negative pole of the direct current power supply is connected with the disc body of the water collecting disc 1. Because earth self belongs to a negative pole body, consequently, the positive pole is connected into water grid 3, and then connects the negative pole with earth direct contact's disk body, no matter whether the DC power supply who uses is safe voltage, all can play better safety action relatively.
In fig. 1, the dc power is provided by the commercial power 10, and it is understood that the cooling tower as an industrial device can be used not only in facilities equipped with the commercial power 10, such as office buildings, but also in factory sides, and thus the dc power can also be a power source (the voltage range of the power source is generally 380V-660V).
The commercial power 10 or the power supply is converted into a direct current by a rectifier bridge 6 through a transformer, such as an isolation transformer 8 shown in fig. 1, corresponding to the commercial power 10, the isolation transformer 8 adopted is necessarily a single-phase isolation transformer, the alternating current is converted into the direct current after transformation, and the voltage of the direct current output by the rectifier bridge 6 is 220-380V, preferably 300V. The power is 500-1000W, the power is positively correlated with the water consumption of the cooling tower, for the cooling tower except a large tower, the rated power of the direct current power supply is 800W, the use requirement of algae removal can be met, and the rated power is 500-800W and is 1000W at most.
In addition, regarding algae removal, the situation that the direct current power supply is normally open is not limited, and it should be further explained that the turning on of the direct current power supply does not mean that synchronization with the cooling tower is required, and in addition, the direct current power supply can be turned on intermittently.
The electrochemical method can replace a water treatment process by a dosing method, is more environment-friendly and has no pollution.
In some embodiments, the water inlet grille 3 is a vertical enclosure surrounding the water collection port 2.
The distance between the water inlet grille 3 and the water collecting opening 2 is 0.8-2.5 m, and 1.6 m is preferred. It can be understood that the larger the distance between the water inlet grille 3 and the water collecting opening 2 is, the larger the side length of the enclosure formed by the water inlet grille 3 is, such as the approximately square structure shown in fig. 1, under the condition, the contact area with water is also increased, and the electrochemical reaction effect is better.
For the negative pole, the disk body of water-collecting tray 1 constitutes the negative pole body, because of the settlement of pollutant, after the deposit accumulates certain thickness, can clear up water-collecting tray 1.
In a still further preferred embodiment, a secondary filter is mounted on the water distribution system opposite the water inlet grate 3. The water inlet grate 3 is in conventional use mainly intended to isolate large impurities, not to be filtered for relatively small impurities, and although both wet or dry wet cooling towers are of open construction and are loosely operated, it is very easy to be blocked for e.g. spray equipment, and therefore a secondary filter is provided on the side of the water distribution system to adapt to e.g. the allowable impurity particle size of the spray equipment.
With regard to the filtering classification, it will be clear to the person skilled in the art that, under customary conditions, the filtering level of the preceding stage is of course smaller than the filtering level of the following stage.
Preferably, the secondary filter is a net cage filter 9. The net cage filter 9 belongs to one of pipeline equipment, is provided with a pipe joint, and is convenient to install on the pipeline equipment, the filter on the household water dispenser generally adopts the small net cage filter 9, and the filter on the household tap water pipe usually adopts a relatively large net cage filter.
For the cooling tower, the water amount is relatively large, for example, a 6 t/h-grade net cage filter 9 can be adopted, and the type of the net cage filter can be selected according to the water amount of the cooling tower.
In the configuration shown in fig. 1, an ultraviolet sterilizer, such as an ultraviolet sterilizing lamp 11 shown in the drawing, is mounted on the water distribution system.
The ultraviolet sterilizing lamp 11 in the figure is of a box-type structure, and can also form a buffer tank on the whole, and water becomes slow due to the increase of the flow area in the buffer tank, so that the ultraviolet sterilizing effect is better.
The ultraviolet sterilizing lamp 11 can kill the fine algae entering the water distribution system, and the ozone generator 12 is matched to further improve the sterilizing effect and purify the water body.
In a preferred embodiment, the flow area of the buffer tank is 20-80 times of the flow area of the water return pipe 5.
The sterilization adopts an ultraviolet irradiation mode, the ultraviolet sterilization lamp 11 is generally a cold light lamp, and a lamp body containing a lampshade can be directly placed in the water body of the buffer tank. In some embodiments, the selected wall of the buffer tank is made of glass plate or other transparent material, and the ultraviolet sterilizing lamp 11 is disposed outside the buffer tank.
Preferably, the uv sterilizer is located at the next stage of the secondary filter to reduce interference of impurities with sterilization.
Further, an ozone generator 12 is provided in the water distribution system;
accordingly, the ozone generated by the ozone generator 12 is introduced into the buffer tank through the aeration head.
For the application equipment, the running power of the application equipment can be changed, for this reason, a circulating pump which is matched with the water distribution system is a circulating pump 7 driven by a variable frequency motor, and the return water temperature is adjusted according to the application equipment, namely the return water temperature is adjusted by changing the circulating speed.
Claims (10)
1. The utility model provides a cooling tower removes algae system, the cooling tower is wet cooling tower or dry and wet cooling tower, and this cooling tower has water distribution system and water catch tray, its characterized in that, cooling tower removes algae system and includes:
the water inlet grille is arranged at the water collecting port of the water collecting tray and is made of an electric conduction material; and
and the positive pole of the direct current power supply is connected with the water inlet grille through a cable, and the negative pole of the direct current power supply is connected with the disc body of the water collecting disc.
2. The system of claim 1, wherein the water inlet grille is a vertical enclosure surrounding the water collection port;
the distance between the water inlet grille and the water collecting opening is 0.8-2.5 m.
3. The system of claim 1, wherein the DC power supply has a power of 500-1000W and a working voltage of 220-380V.
4. The cooling tower algae removal system of claim 1, wherein a secondary filter is mounted to the water distribution system opposite the water inlet grate.
5. The cooling tower algae removal system of claim 4, wherein the secondary filter is a mesh cage filter.
6. The cooling tower algae removal system of claim 4 or 5, wherein an ultraviolet sterilizer is installed on the water distribution system.
7. The cooling tower algae removal system of claim 6, wherein the UV sterilizer is located at a next stage of the secondary filter.
8. The cooling tower algae removal system of claim 6, wherein an ozone generator is provided in the water distribution system;
correspondingly, a buffer water tank is arranged on a pipeline of the water distribution system, and the ozone generated by the ozone generator is introduced into the buffer water tank through an aeration head.
9. The cooling tower algae removal system of claim 8, wherein the ultraviolet sterilizer is an ultraviolet sterilizing lamp installed in the buffer tank or isolated from water in the buffer tank by a glass cover plate.
10. The system of claim 1, wherein the circulation pump of the water distribution system is a variable frequency motor driven circulation pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921097901.1U CN210367087U (en) | 2019-07-15 | 2019-07-15 | Algae removal system of cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921097901.1U CN210367087U (en) | 2019-07-15 | 2019-07-15 | Algae removal system of cooling tower |
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| Publication Number | Publication Date |
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| CN210367087U true CN210367087U (en) | 2020-04-21 |
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| CN201921097901.1U Active CN210367087U (en) | 2019-07-15 | 2019-07-15 | Algae removal system of cooling tower |
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| CN (1) | CN210367087U (en) |
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- 2019-07-15 CN CN201921097901.1U patent/CN210367087U/en active Active
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