CN223769303U - Closed circulation water cooling tower - Google Patents

Abstract

This utility model discloses a closed-loop circulating water cooling tower, including a cooling tower body, a pump station, and a pure water treatment system. The pure water treatment system is connected to the pump station. The cooling tower body includes a tower frame, a fan, a spray pump, and heat exchange tube bundles, a water collector, a spray device, and a water collection tank located within the tower frame. The tower frame has an air inlet and an air outlet. The fan is mounted on the tower frame. The heat exchange tube bundle has an inlet end and an outlet end connected to the pump station. The spray pump transports water from the water collection tank to the spray device. The pure water treatment system includes a first delivery pump, a filtration unit, and a reverse osmosis unit. The first delivery pump is connected between the filtration unit and the reverse osmosis unit, and the reverse osmosis unit is connected to the pump station. The system uses pure water supply to ensure high water quality and stable water supply, reduces the need for scale inhibitors and other chemicals, extends the drainage cycle of the water collection tank, and reduces operating costs. Furthermore, the use of air cooling and water cooling achieves optimal operating results, resulting in greater energy and water conservation.

Description

Closed circulation water cooling tower

Technical Field

The utility model relates to the technical field of cooling towers, in particular to a closed circulating water cooling tower.

Background

It is well known that closed cooling towers (also known as evaporative coolers) are a design in cooling systems for the recovery and reuse of circulating water.

Unlike the conventional open cooling tower, the closed cooling tower is arranged in the tower by using a closed heat exchanger, and the cooling effect is ensured by heat exchange of circulated air, spray water outside the pipe and circulating water inside the pipe. Because the circulating water is in-pipe closed circulation, the contact with the external environment is avoided, the risk that pollutants enter the system can be reduced, the water quality is guaranteed not to be polluted, the efficient operation of main equipment is well protected, and the service life is prolonged, so that the closed cooling tower is widely applied to the industries such as chemical production in recent years.

In the existing closed cooling tower, tap water circulates between the closed cooling tower and water using equipment, and the circulating backwater of the water using equipment is cooled, so that the water using equipment works at a proper temperature.

However, since tap water is directly used between the existing closed cooling tower and water using equipment, the pollution discharge period of the water collecting tank is shortened, and the operation cost and the addition amount of agents such as scale inhibitor are increased.

In addition, in the existing closed cooling tower, the spraying device sprays the tubular heat exchanger through a fixed pipeline, and in this way, the spraying is uneven or blind spots exist.

In addition, in the existing closed cooling tower, there is a defect that the water consumption and loss cannot be effectively and timely supplemented.

Accordingly, there is a need for a closed cycle water cooling tower that overcomes one or more of the drawbacks described above.

Disclosure of utility model

The utility model aims to provide a closed circulating water cooling tower which is used for supplying water by pure water, ensuring high quality and stable water supply of water, reducing the addition of agents such as scale inhibitors and the like, prolonging the pollution discharge period of a water collecting tank and reducing the operation cost, and adopting air cooling and water cooling for cooling to achieve the optimal operation effect so as to save more energy and water.

In order to achieve the above object, the closed circulating water cooling tower of the present utility model comprises a cooling tower body, a pump station and a pure water treatment system for treating tap water into pure water. The cooling tower main body comprises a tower frame body, a fan, a spray pump, a heat exchange tube bundle positioned in the tower frame body, a water collector, a spray device and a water collecting tank, wherein an air inlet and an air outlet are formed in the tower frame body, the fan is assembled in the tower frame body, outside air enters from the air inlet and is discharged from the air outlet, the heat exchange tube bundle is provided with an inlet end and an outlet end communicated with the pump station, the water collector is positioned above the heat exchange tube bundle, the spray device is positioned between the heat exchange tube bundle and the water collector, the water collecting tank is positioned below the heat exchange tube bundle, and the spray pump enables water in the water collecting tank to be conveyed to the spray device. The pure water treatment system comprises a first delivery pump, a filtering unit and a reverse osmosis unit, wherein the filtering unit and the reverse osmosis unit are used for filtering and treating tap water in sequence, the first delivery pump is communicated between the filtering unit and the reverse osmosis unit, and the reverse osmosis unit is communicated with the pump station.

Compared with the prior art, the closed circulating water cooling tower is designed by means of the fact that the pure water treatment system comprises a first conveying pump, a filtering unit and a reverse osmosis unit, wherein the filtering unit and the reverse osmosis unit are used for filtering tap water and conducting reverse osmosis treatment on tap water in sequence, the first conveying pump is communicated between the filtering unit and the reverse osmosis unit, and the reverse osmosis unit is communicated with a pump station.

Preferably, the pump station comprises an external circulation pump, a pure water supplementing tank and a pressure stabilizing unit, wherein the pressure stabilizing unit is communicated with the pure water supplementing tank and the external circulation pump, the external circulation pump is also communicated with the outlet end of the heat exchange tube bundle, and the pure water treatment system is used for conveying the treated pure water into the pure water supplementing tank.

Preferably, a control valve for controlling the water in the pure water replenishing tank to replenish water to the water collecting tank is arranged between the pure water replenishing tank and the water collecting tank.

Preferably, the pressure stabilizing unit comprises a booster pump communicated between the pure water supplementing tank and the external circulation pump and an air pressure tank communicated with the external circulation pump.

Preferably, the air pressure tank is a diaphragm air pressure tank.

Preferably, the heat exchange tube bundle is a serpentine tube bundle.

Preferably, the air outlet is located at the top of the tower frame, and the air inlet is located at the side of the tower frame.

Preferably, the spray head of the spray device is a basket type spray head.

Preferably, the pure water treatment system further comprises a pure water storage tank for storing pure water obtained by the reverse osmosis unit treatment and a second delivery pump for delivering the pure water in the pure water storage tank to the pump station.

Preferably, the filtering unit comprises a dosing tank, a multi-medium filter, an activated carbon filter and a precision filter which are sequentially communicated, wherein the dosing tank is arranged between the activated carbon filter and the precision filter, and the first conveying pump is a high-pressure pump.

Preferably, the closed circulating water cooling tower further comprises a cleaning water tank and a cleaning water pump for cleaning the reverse osmosis unit, wherein the reverse osmosis unit is further provided with a cleaning inlet end and a cleaning outlet end.

Preferably, the closed circulating water cooling tower further comprises an electric control system, wherein the electric control system comprises a control cabinet, an operation screen, a frequency converter, a flowmeter, a temperature transmitter and a pressure transmitter.

Drawings

Fig. 1 shows a plan view of the closed circulation water cooling tower of the present utility model after it is connected to a water using apparatus.

FIG. 2 is a plan view of a filtration unit of the pure water treatment system in the closed circulation water cooling tower of the present utility model.

Fig. 3 is a plan view of the pure water treatment system in the closed circulation water cooling tower of the present utility model except for the filtration unit.

FIG. 4 is a plan view of the cooling tower body, pump station and water-consuming equipment in the closed circulation water cooling tower of the present utility model.

Fig. 5 is a plan view of a cleaning water tank, a cleaning water pump and a cleaning filter in the closed circulation water cooling tower of the present utility model.

Fig. 6 is a plan view of a cooling tower main body in the closed circulation water cooling tower of the present utility model.

Fig. 7 is a plan view of an electric control system in the closed circulation water cooling tower of the present utility model.

Detailed Description

In order to describe the technical content and constructional features of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1, the closed circulating water cooling tower 100 of the present utility model is used for circulating pure water to the water using apparatus 200 and cooling the circulating backwater of the water using apparatus 200, so as to ensure that the water using apparatus 200 works at a proper temperature. Referring again to fig. 6, the closed circulation water cooling tower 100 of the present utility model includes a cooling tower body 10, a pump station 20, and a pure water treatment system 30 for treating tap water into pure water.

The cooling tower body 10 comprises a tower frame 11, a fan 12, a spray pump 13, a heat exchange tube bundle 14, a water collector 15, a spray device 16 and a water collecting tank 17, wherein the heat exchange tube bundle 14, the water collector 15, the spray device 16 and the water collecting tank 17 are arranged in the tower frame 11, an air inlet 111 and an air outlet 112 are arranged on the tower frame 11, alternatively, in fig. 6, the air inlet 111 is arranged on the side part of the tower frame 11, and the air outlet 112 is arranged on the top of the tower frame 11, so that the fan 12 can conveniently suck fresh cold air from the side part of the tower frame 11 and then discharge the fresh cold air from the top of the tower frame 11, the cold air can flow through the heat exchange tube bundle 14 from bottom to top, sensible heat and latent heat exchange with water sprayed by the spray device 16 can be enhanced, and water vapor formed by evaporation can be taken away in time, the cooling effect can be improved, in addition, the air inlet 111 can adopt a sunlight frame 11 is free from any phenomenon of water drops, direct spraying, and can be effectively prevented from spreading and scattering, algae can be effectively prevented, the problem caused by spraying algae can be obviously reduced, and the air inlet 112 is not needed to be overhauled by the air inlet 112, and the position shown in fig. 6 is shown in the practical position.

The fan 12 is assembled on the tower frame 11, the tower frame 11 provides support for the fan 12, the fan 12 also enables external air to enter from the air inlet 111 and then to be discharged from the air outlet 112, alternatively, as an example, the fan 12 is selected as a blade airfoil shape, so that the fan 12 has the advantages of high efficiency, low noise, large flow and high pressure, and in addition, the fan 12 can be matched with a gear box, and a probe integrating three parameters of oil temperature, oil level and vibration is arranged on the gear box and used for monitoring the operation safety of the fan 12.

The heat exchange tube bundle 14 has an inlet end 141 and an outlet end 142 communicating with the pump station 20, and the inlet end 141 communicates with the water using apparatus 200 to meet the requirement of the circulating backwater of the water using apparatus 200 flowing back to the heat exchange tube bundle 14, alternatively, in fig. 6, the heat exchange tube bundle 14 is a serpentine tube bundle, so that the heat exchange tube bundle 14 is arranged with a high inclination to prevent foreign matters from accumulating, obviously, the heat exchange tube bundle 14 may be a tube bundle with other shapes according to actual needs, so the method is not limited to fig. 6.

The water collector 15 is located above the heat exchange tube bundle 14 to protect the spray device 16 from sunlight and dust, and optionally, the water collector 15 is made of high quality PVC material to have the advantages of corrosion resistance, flame retardance, high ventilation efficiency and low water drift rate (less than or equal to 0.01%).

The spray device 16 is positioned between the heat exchange tube bundle 14 and the water collector 15 to meet the protection effect of the water collector 15 on the spray device 16, and the water collection tank 17 is positioned below the heat exchange tube bundle 14 to meet the requirement of the water collection tank 17 on collecting water sprayed by the spray device 16. The spray pump 13 conveys water in the water collection tank 17 to the spray device 16 to meet the requirement of circulating spray water (pure water) between the water collection tank 17 and the spray device 16, alternatively, as shown in fig. 1, 4 and 6, as an example, the spray pump 13 is mounted on the side of the tower frame 11 and adjacent to the bottom of the tower frame 11, but not limited thereto.

The pure water treatment system 30 comprises a first delivery pump 31, a filtering unit 32 and a reverse osmosis unit 33 for filtering and reverse osmosis treatment of tap water in sequence, wherein the first delivery pump 31 is communicated between the filtering unit 32 and the reverse osmosis unit 33, and the reverse osmosis unit 33 is communicated with the pump station 20, so that tap water enters the pump station 20 after passing through the filtering unit 32, the first delivery pump 31 and the reverse osmosis unit 33 in sequence under the operation of the first delivery pump 31. Specifically, referring to fig. 1 and 5, as an example, the closed circulating water cooling tower 100 of the present utility model further includes a cleaning water tank 40 and a cleaning water pump 50 for cleaning the reverse osmosis unit 33, and correspondingly, the reverse osmosis unit 33 is further provided with a cleaning inlet end 331 and a cleaning outlet end 332, so that the cleaning water is circulated between the cleaning water tank 40 and the reverse osmosis unit 33 under the operation of the cleaning water pump 50, to realize a periodic cleaning function of the reverse osmosis unit 33, so that the quality of pure water is ensured, and the service life of the reverse osmosis unit 33 is prolonged. More specifically, the following is:

Referring to fig. 1 and 7, as an example, the closed-cycle water cooling tower 100 of the present utility model further includes an electric control system 70, where the electric control system 70 includes a control cabinet, an operation panel 72, a frequency converter 73, a flow meter 74, a temperature transmitter 75, and a pressure transmitter 76, and the design is such that the electric control system 70 can be intelligently controlled by a PLC, and by monitoring process parameters such as temperature, pressure, flow, etc., the frequency of the fan 12 in the closed-cycle water cooling tower 100 of the present utility model is automatically adjusted, thereby reducing useless power and reducing energy consumption, and in addition, the frequency of the outgoing circulation pump 21 (to be mentioned below) in the pump station 20 is controlled in a variable frequency manner, thereby achieving the purpose of controlling the water flow in the closed-cycle water cooling tower 100 of the present utility model, and in addition, the start and stop of the booster pump 231 (to be mentioned below) in the pump station 20, achieving the pipe pressure stabilization of the closed-cycle water cooling tower 100 of the present utility model, and having a remote DCS (distributed control system) function, thereby achieving the remote control of the control room.

Referring to fig. 1 to 3, as an example, the pure water treatment system 30 further includes a pure water storage tank 34 for storing pure water treated by the reverse osmosis unit 33 and a second transfer pump 35 for transferring pure water in the pure water storage tank 34 to the pump station 20, so as to ensure continuous reliability of operation of the closed circulation water cooling tower 100 of the present utility model. In addition, the filtering unit 32 includes a dosing tank 321, and a multi-media filter 322, an activated carbon filter 323, and a precision filter 324 which are sequentially connected, and the dosing tank 321 is disposed between the activated carbon filter 323 and the precision filter 324, so as to effectively improve the quality of the tap water processed into pure water. Furthermore, the first transfer pump 31 is a high-pressure pump to have advantages of small volume and high pressure.

Referring to fig. 1 and 4, as an example, the pump station 20 includes an output circulation pump 21, a pure water supply tank 22, and a pressure stabilizing unit 23. The pressure stabilizing unit 23 is connected to the pure water replenishing tank 22 and the delivery circulation pump 21, and the delivery circulation pump 21 is also connected to the outlet end 142 of the heat exchange tube bundle 14. At this time, the pure water treatment system 30 is used for delivering the treated pure water into the pure water replenishing tank 22, so that the pure water replenishing water device 200 in the pure water replenishing tank 22 is replenished with the water by the delivery circulation pump 21 when the water device 200 is replenished with water for the first time and the later time, and the pure water replenishing tank 22 is used for collecting the pure water, thereby playing a role of buffering and stabilizing the delivery. Specifically, in fig. 1, as an example, a control valve 24 for controlling the water in the purified water replenishing tank 22 to replenish the water in the water collecting tank 17 is provided between the purified water replenishing tank 22 and the water collecting tank 17 to achieve the purpose of replenishing the water collecting tank 17 with purified water by manipulating the control valve 24, and alternatively, as an example, the control valve 24 is electromagnetically controlled to facilitate automatic control of the control valve 24 by the electric control system 70. In addition, the pressure stabilizing unit 23 comprises a booster pump 231 communicated between the pure water replenishing tank 22 and the delivery circulating pump 21 and a pneumatic tank 232 communicated with the delivery circulating pump 21, and alternatively, the pneumatic tank 232 is a diaphragm pneumatic tank as an example, so that pure water in the pure water replenishing tank 22 is pumped out through the booster pump 231 to realize the first water replenishing and the later water replenishing of the water using device 200, and in addition, the diaphragm pneumatic tank is used for adjusting the pressure change when the water in the pipeline is heated and cooled, reducing the start and stop times of the booster pump 231 and prolonging the service life thereof.

As shown in fig. 5, as an example, a cleaning filter 60 is provided at an outlet end of the cleaning water pump 50 such that the cleaning water pump 50 communicates with a cleaning inlet end 331 of the reverse osmosis unit 33 through the cleaning filter 60, and a backwater end 51 for communicating with a cleaning outlet end 332 of the reverse osmosis unit 33 is provided at the cleaning water tank 40 to achieve the purpose of circulating cleaning water between the cleaning water tank 50 and the reverse osmosis unit 33 under the driving of the cleaning water pump 50.

As shown in fig. 6, as an example, the spray head 161 of the spray device 16 is a basket type spray head, so that the spray head 161 has the characteristics of large flow, uniform spraying, easy cleaning, difficult blockage, easy maintenance and long service life, so that the water film of spray water can furthest cover the outer wall of the heat exchange tube bundle 14, the dry point of the water film of the cooling tube wall is reduced, the cooling area and the vaporization of water are ensured, the heat transfer effect is improved, and the scaling speed of the outer wall of the heat exchange tube bundle 14 is greatly reduced.

The working principle of the closed circulating water cooling tower 100 of the present utility model will be described with reference to the accompanying drawings:

In the pure water treatment system 30, tap water is treated by the filtration unit 32 and the reverse osmosis unit 33 to become pure water, and is stored in the pure water replenishment tank 34. And the pure water in the pure water replenishment tank 34 is pumped into the pure water replenishment tank 22 of the pump station 20 by the second transfer pump 35.

The pure water in the pure water replenishing tank 22 is replenished to the water using equipment 200 under the cooperation of the pressure stabilizing unit 23 and the delivery circulating pump 21, the circulating backwater of the water using equipment 200 enters the heat exchange tube bundle 14 from the inlet end 141 of the heat exchange tube bundle 14, then flows back to the delivery circulating pump 21 from the outlet end 142 of the heat exchange tube bundle 14, and the returned pure water is continuously conveyed to the water using equipment 200 by the delivery circulating pump 21, so that the purpose of circulating the pure water between the water using equipment 200 and the cooling tower main body 10 is realized.

In the process that circulating backwater flows out from the inlet end 141 of the heat exchange tube bundle 14 and then flows out from the outlet end 142 of the heat exchange tube bundle 14, pure water in the water collecting tank 17 is conveyed to the spraying device 16 by the spraying pump 13, so that the pure water is sprayed on the heat exchange tube bundle 14 by the spraying device 16 to realize the purpose of heat exchange, and meanwhile, fresh cold air outside is introduced from the air inlet 111 and then discharged from the outlet air 112 by the fan 12 to realize the purpose of air cooling of the heat exchange tube bundle 14 by the cold air. The pure water sprayed on the heat exchange tube bundle 14 flows back into the water collection tank 17 under the action of its own weight, and when the loss of pure water in the water collection tank 17 reaches a predetermined value, the control valve 24 is opened at this time, so that pure water in the pure water replenishment tank 22 is replenished into the water collection tank 17.

Compared with the prior art, the closed circulating water cooling tower 100 is designed by means of the fact that the pure water treatment system 30 comprises the first conveying pump 31, and the filtering unit 32 and the reverse osmosis unit 33 which sequentially carry out filtering treatment and reverse osmosis treatment on tap water, wherein the first conveying pump 31 is communicated between the filtering unit 32 and the reverse osmosis unit 33, and the reverse osmosis unit 33 is communicated with the pump station 20, so that pure water is adopted for supplying water, high quality of water and stable water supply are guaranteed, the addition of agents such as scale inhibitors is reduced, the pollution discharge period of the water collection tank 17 is prolonged, the running cost is reduced, and in addition, air cooling and water cooling are adopted for cooling, so that the optimal running effect is achieved, and energy and water are saved.

It should be noted that, according to actual needs, a raw water tank, a raw water pump and a backwash water pump may be added to the closed circulating water cooling tower 100 described above, where the raw water tank, the raw water pump, the backwash water pump and the filtration unit 32 are sequentially arranged to meet the needs of tap water sequentially passing through the raw water tank, the raw water pump, the backwash water pump and the filtration unit 32.

The foregoing disclosure is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. The utility model provides a closed circulating water cooling tower, includes cooling tower main part and pump station, the cooling tower main part contains tower framework, fan, spray pump and is located heat exchange tube bank, receipts water ware, spray set and header tank in the tower framework, be equipped with air intake and air outlet on the tower framework, the fan assemble in the tower framework makes external gaseous by the air intake get into again follow the air outlet discharges, heat exchange tube bank have the entry end with the exit end of pump station intercommunication, the receipts water ware is located heat exchange tube bank's correspondence top, spray set is located heat exchange tube bank with receipts water ware between, the header tank is located heat exchange tube bank's correspondence below, the spray pump makes water in the header tank is gone to spray set department carries, its characterized in that, closed circulating water cooling tower still includes the pure water processing system that is used for handling into pure water, pure water processing system contains first delivery pump and carries out filtration treatment and reverse osmosis treatment's filter unit to the running water in proper order, first delivery unit with reverse osmosis treatment's filter unit intercommunication between the filter unit and the reverse osmosis unit.

2. The closed circulating water cooling tower according to claim 1, wherein the pump station comprises an outward circulation pump, a pure water supplementing tank and a pressure stabilizing unit, the pressure stabilizing unit is communicated with the pure water supplementing tank and the outward circulation pump, the outward circulation pump is also communicated with the outlet end of the heat exchange tube bundle, and the pure water treatment system is used for conveying the treated pure water into the pure water supplementing tank.

3. The closed circulating water cooling tower according to claim 2, wherein a control valve for controlling the water in the purified water replenishing tank to be replenished to the water collecting tank is provided between the purified water replenishing tank and the water collecting tank.

4. The closed circulating water cooling tower according to claim 2, wherein the pressure stabilizing unit comprises a booster pump communicated between the pure water replenishing tank and an outward circulating pump and a pneumatic tank communicated with the outward circulating pump.

5. The closed-type circulating water cooling tower according to claim 4, wherein the air pressure tank is a diaphragm air pressure tank.

6. The closed circulating water cooling tower according to claim 1, wherein the heat exchange tube bundle is a serpentine tube bundle, the air outlet is positioned at the top of the tower frame, the air inlet is positioned at the side of the tower frame, and the spray head of the spray device is a basket type spray head.

7. The closed circulating water cooling tower according to claim 1, wherein the pure water treatment system further comprises a pure water storage tank for storing pure water treated by the reverse osmosis unit and a second transfer pump for transferring pure water in the pure water storage tank to the pump station.

8. The closed circulating water cooling tower according to claim 1, wherein the filtering unit comprises a dosing tank, a multi-medium filter, an activated carbon filter and a precision filter which are sequentially communicated, the dosing tank is arranged between the activated carbon filter and the precision filter, and the first conveying pump is a high-pressure pump.

9. The closed circulating water cooling tower according to claim 1, further comprising a cleaning water tank and a cleaning water pump for cleaning the reverse osmosis unit, wherein the reverse osmosis unit is further provided with a cleaning inlet end and a cleaning outlet end.

10. The closed cycle water cooling tower according to claim 1, further comprising an electronic control system comprising a control cabinet, an operation panel, a frequency converter, a flow meter, a temperature transmitter, and a pressure transmitter.