CN114370776A

CN114370776A - Wet cooling tower

Info

Publication number: CN114370776A
Application number: CN202111490534.3A
Authority: CN
Inventors: 殷国平; 袁亮
Original assignee: Jiangsu Fengtai Energy Saving Environmental Protection Technology Co ltd
Current assignee: Jiangsu Fengtai Energy Saving Environmental Protection Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-04-19

Abstract

The invention relates to the technical field of cooling towers, in particular to a wet cooling tower which comprises a tower body, wherein a packing layer, a spraying device and a water collector are sequentially arranged in the tower body from bottom to top; the invention has simple structure design, small occupied space, low energy consumption, high fog dissipation efficiency and long service life.

Description

Wet cooling tower

Technical Field

The invention relates to the technical field of cooling towers, in particular to a wet cooling tower.

Background

The cooling tower is a device which uses water as circulating coolant, absorbs heat from the system and discharges the heat to the atmosphere so as to reduce the water temperature; the evaporative heat dissipation device is used for reducing the water temperature by dissipating waste heat generated in industry or in a refrigeration air conditioner by utilizing the principles that heat is generated by heat exchange after water flows and contacts with air, and the heat is taken away by volatilization of steam to achieve evaporative heat dissipation, convection heat transfer, radiation heat transfer and the like, so that the normal operation of the system is ensured. The cooling tower is divided into the following according to the contact mode of water and air: wet cooling towers, dry cooling towers, and dry-wet cooling towers.

When the temperature is low in winter, the water vapor discharged by the existing wet cooling tower in the operation process can form white smoke, and the white smoke can form local small weather environment near the cooling tower, so that the local environment is seriously influenced, and particularly the urban and suburban junction is most obvious. In order to eliminate the influence of white smoke and improve the surrounding environment, two main technologies are available in the field of fog dissipation at present: the two technologies are mainly that saturated hot and humid air after heat exchange of filler is heated for the second time, so that the saturated hot and humid air is changed into unsaturated water vapor and then discharged out of a tower, and the aim of removing fog is achieved. However, both the two technologies have certain defects, the finned tube type fog dissipation has higher requirement on the space height of the cooling tower, the pump lift of a water pump needs to be increased, and the energy consumption of the cooling tower is increased; the fog dispersal procedure is complex in process, and a shutter system and a vacuum pumping system need to be adjusted; the surface of the finned tube is easy to collect dust, influences the heat exchange effect and needs to be cleaned regularly; the method is only suitable for new projects, and the original cooling tower cannot be modified. The condensing module type fog dissipation has certain requirements on the height of an air chamber, and a certain water pump lift needs to be increased, so that the biggest defect is that the resistance is large, and particularly, the resistance can increase the energy consumption of a cooling tower when the fog dissipation is not used in summer, thereby increasing the long-term operation cost of the cooling tower; the fog dispersal process is relatively complex, and a shutter on the outer wall and a plate turnover system at the lower part of the module need to be regulated and controlled; the method is only suitable for new projects, and the original cooling tower cannot be modified.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings in the prior art and provide the wet cooling tower which is simple in structural design, small in occupied space, low in energy consumption, high in fog dissipation efficiency and long in service life.

The technical scheme for realizing the purpose of the invention is as follows: the utility model provides a wet cooling tower, includes the tower body, from the bottom up is equipped with packing layer, spray set and receipts hydrophone in proper order in the tower body, the air intake has been seted up to the tower wall of packing layer below, the air outlet has been seted up at the top of tower body, the air outlet is equipped with the fan, the fan is located in the dryer, the top of receiving the hydrophone is equipped with the electric heat membrane and is used for the defogging.

Furthermore, the electric heating film is uniformly arranged on the circumferential outer wall or the circumferential inner wall of the bottom of the air duct.

Furthermore, the electrothermal film is arranged at an air outlet above the air duct.

Furthermore, the spraying device comprises a spraying pipe and a plurality of spray heads communicated with the spraying pipe.

Further, a water collecting tank is arranged at the bottom of the tower body and is located below the air inlet.

After the technical scheme is adopted, the invention has the following positive effects:

(1) the installation mode of the electric heating film is simple, the electric heating film can be installed on the tower wall at the upper part of the water collector, the air outlet of the air duct or other parts, the space is not occupied too much, the water pump lift of the cooling tower is not required to be increased, and any energy consumption is not increased for the cooling tower in the time period (such as summer) when fog dissipation is not required;

(2) the arrangement of the electrothermal film in the invention enables the heating carrier to rise to fifty-six ℃ in a short time, and the electrothermal conversion rate is high, thereby improving the fog dissipation efficiency;

(3) the invention has simple and convenient operation, the life cycle of the electric heating film and the building body is the same, the use process is maintenance-free, and the old cooling tower can be reformed.

Drawings

In order that the present disclosure may be more readily and clearly understood, the following detailed description of the present disclosure is provided in connection with specific embodiments thereof and with the accompanying drawings, in which:

FIG. 1 is a schematic structural view of example 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.

In the figure: the device comprises a tower body 1, a packing layer 2, a spraying device 3, a spraying pipe 3a, a nozzle 3b, a water collector 4, an air inlet 5, an air outlet 6, a fan 7, an air duct 8, an electrothermal film 9, an air outlet 10, a water collecting tank 11 and a motor 12.

Detailed Description

Example 1

As shown in fig. 1, a wet cooling tower, including tower body 1, from the bottom up is equipped with packing layer 2 in proper order in the tower body 1, spray set 3 and receipts hydrophone 4, spray set 3 includes shower 3a and a plurality of shower nozzle 3b that communicate with shower 3a, air intake 5 has been seted up to the tower wall of packing layer 2 below, air outlet 6 has been seted up at the top of tower body 1, the bottom of tower body 1 is equipped with catch basin 11, catch basin 11 is located the below of air intake 5, air outlet 6 is equipped with fan 7, fan 7 is driven by motor 12, fan 7 is located in dryer 8, the top of dryer 8 is equipped with air exit 10, the structure of above-mentioned wet cooling tower is prior art, do not describe here in any detail. The electric heating film 9 is evenly arranged on the circumferential outer wall or the circumferential inner wall of the bottom of the air duct 8, and the air duct 8 is positioned above the water collector 4.

The working principle of the embodiment is as follows: the circulating hot water is distributed to a plurality of spray heads 3b through the spray pipes 3a, and is uniformly sprayed on the packing layer 2 through the plurality of spray heads 3b, and the spraying hot water forms a film on the packing layer 2. Dry and cold air outside the tower enters the tower from the air inlet 5 under the suction of the fan 7 to exchange heat with the packing layer 2, spray hot water is evaporated and cooled to form cold water and enters the water collecting tank 11, the dry and cold air inside the tower is changed into saturated wet and hot air after exchanging heat with the spray hot water through the packing layer 2 and then continuously rises, and water drops formed by condensation of the saturated wet and hot air in the rising process are collected by the water collector 4 and flow into the tower again for recycling. When the saturated damp and hot air rises to the bottom of the air duct 8, dry and cold air outside the tower is heated by the electric heating film 9 and then is mixed with the saturated damp and hot air to become unsaturated damp and hot air which is discharged from the air outlet 10 above the air duct 8 by the fan 7, so that the aim of fog dissipation is fulfilled.

Example 2

As shown in fig. 2, the wet cooling tower has the same structure as that of embodiment 1, except that an electric heating film 9 is provided at an air outlet 10 above the air duct 8, instead of the bottom of the air duct 8.

The working principle of the embodiment is as follows: the circulating hot water is distributed to a plurality of spray heads 3b through the spray pipes 3a, and is uniformly sprayed on the packing layer 2 through the plurality of spray heads 3b, and the spraying hot water forms a film on the packing layer 2. Dry and cold air outside the tower enters the tower from the air inlet 5 under the suction of the fan 7 to exchange heat with the packing layer 2, spray hot water is evaporated and cooled to form cold water and enters the water collecting tank 11, the dry and cold air inside the tower is changed into saturated wet and hot air after exchanging heat with the spray hot water through the packing layer 2 and then continuously rises, and water drops formed by condensation of the saturated wet and hot air in the rising process are collected by the water collector 4 and flow into the tower again for recycling. When the saturated damp and hot air is blown to the air outlet 10 above the air duct 8 by the fan 7, the electrothermal film 9 at the air outlet 10 heats the saturated damp and hot air to become unsaturated damp and hot air, thereby realizing fog dissipation.

The installation position of the electrothermal film 9 in the invention is not limited to the embodiment 1 and the embodiment 2, and the electrothermal film 9 can also be installed at other parts of the wet cooling tower, and the electrothermal film 9 can also be made into universal integrated module equipment to be additionally installed and modified on the original cooling tower. The present invention is not limited to the use of the electrothermal film 9 for defogging, and the present invention may be applied to other electrothermal devices for defogging.

The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wet cooling tower comprising a tower body (1), characterized in that: be equipped with packing layer (2), spray set (3) and receipts hydrophone (4) in proper order from the bottom up in tower body (1), air intake (5) have been seted up to the tower wall of packing layer (2) below, air outlet (6) have been seted up at the top of tower body (1), air outlet (6) are equipped with fan (7), fan (7) are located in dryer (8), the top of receipts hydrophone (4) is equipped with electric heat membrane (9) and is used for the defogging.

2. A wet cooling tower according to claim 1, wherein: the electric heating film (9) is uniformly arranged on the circumferential outer wall or the circumferential inner wall of the bottom of the air duct (8).

3. A wet cooling tower according to claim 1, wherein: the electric heating film (9) is arranged at an air outlet (10) above the air duct (8).

4. A wet cooling tower according to claim 2 or 3, wherein: the spraying device (3) comprises a spraying pipe (3a) and a plurality of spray heads (3b) communicated with the spraying pipe (3 a).

5. A wet cooling tower according to claim 4, wherein: the bottom of tower body (1) is equipped with catch basin (11), catch basin (11) are located the below of air intake (5).