Novel mechanical ventilation fog dispersal cooling tower

Abstract

A novel mechanical ventilation fog dispersal cooling tower relates to the technical field of cooling tower appliances and comprises a cooling fog dispersal system arranged in the cooling tower, a water distribution system is arranged in an area, above the cooling fog dispersal system, of the cooling tower, and the water distribution system comprises controllable nozzles and normally open nozzles which are alternately arranged in parallel. The injection area of the normally-open nozzle covers the filler and the outlet end of the hot channel, and the injection area of the controllable nozzle covers the outlet end of the cold channel. According to the utility model, the problems that in the prior art, when the external environment temperature is low, after saturated water vapor meets external cold air, a large amount of white fog is easily generated, on one hand, the surrounding environment is influenced, traffic hidden dangers are caused, and plant equipment is corroded; and on the other hand, a large amount of water resources are wasted, the operation cost is increased, and adjustment and use cannot be conducted in hot summer and cold winter.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling tower appliances, in particular to a new type of mechanical ventilation fog-eliminating cooling tower. Background Art

[0002] Cooling towers are widely used in industries such as electric power, chemical industry, metallurgy, and petrochemical industry. The function of a cooling tower is to exchange heat between the circulating water carrying waste heat and air in the tower, transfer the heat in the water to the air, and discharge the air into the atmosphere, thereby achieving the cooling of the circulating water. When in use, the circulating water is sent to the water distributor by a water pump and sprayed on the packing. The fan drives the air flow in the tower, and the circulating water falls into the sump after heat exchange with the air. During the heat exchange process between the circulating water and the air, a large amount of saturated water vapor is generated and discharged out of the tower along with the air flow in the tower.

[0003] A patent of CN211143891U is disclosed in the prior art. This solution discloses a secondary column structure on the fog-eliminating layer beam of a fog-eliminating type mechanical ventilation cooling tower. One end of the main structure framework is fixedly connected with a protection panel. A reinforcing plate is arranged on one side of the protection panel. A column top is fixedly installed on one side of the protection panel. A fixing component is arranged on the surface of the main structure framework. A secondary connecting rod is fixedly installed at the upper end of the main structure framework. By setting the secondary connecting rod, the reinforcing plate and the fixing component in the main structure framework, it can effectively prevent the main structure framework from having short columns, ensure the safety of the main structure framework, provide a supporting structure for the fog-eliminating equipment. Under the action of the reinforcing plate, the firmness and rigidity of the main structure framework can be improved, the service life of the main structure framework is prolonged, and at the same time, the technological requirements of fog elimination can be met, bringing convenience to the use of this cooling tower.

[0004] With the use of existing devices including the above patent, the deficiencies of this technology have gradually emerged, mainly manifested in the following aspects:

[0005] When the external environmental temperature is relatively low, after the saturated water vapor meets the external cold air, a large amount of white fog is easily generated. On the one hand, it affects the surrounding environment, causes traffic hazards, and corrodes the factory equipment; on the other hand, it causes a large amount of water resource waste, increases the operation cost, and makes it impossible to be adjusted for use in hot summers and cold winters.

[0006] In summary, it is obvious that the prior art has inconveniences and defects in actual use, so it is necessary to be improved. Summary of the Utility Model

[0007] In view of the defects in the prior art, the present utility model provides a new type of mechanical ventilation fog-eliminating cooling tower to solve the problems in the traditional technology that when the external environmental temperature is relatively low, a large amount of white fog is easily generated after the saturated water vapor meets the external cold air. On the one hand, it affects the surrounding environment, causes traffic hazards, and corrodes the factory equipment; on the other hand, it causes a large amount of water resource waste, increases the operating cost, and makes it impossible to adjust and use in hot summers and cold winters.

[0008] To achieve the above object, the present utility model provides the following technical solutions:

[0009] The new type of mechanical ventilation fog-eliminating cooling tower includes a cooling and fog-eliminating system arranged inside the cooling tower. The cooling and fog-eliminating system includes fillers and heat exchange modules arranged alternately in the horizontal direction. The heat exchange module is provided with cold channels and hot channels arranged in a staggered manner.

[0010] In the area above the cooling and fog-eliminating system of the cooling tower, there is a water distribution system. The water distribution system includes controllable nozzles and normally open nozzles arranged alternately in parallel. The spraying area of the normally open nozzles covers the fillers and the outlet ends of the hot channels. The spraying area of the controllable nozzles covers the outlet ends of the cold channels.

[0011] As an optimized scheme, the water distribution system includes a controllable water distribution pipeline and a normally open water distribution pipeline. A number of controllable nozzles are arranged in parallel and distributed on the controllable water distribution pipeline; a number of normally open nozzles are arranged in parallel and distributed on the normally open water distribution pipeline.

[0012] As an optimized scheme, the controllable water distribution pipeline includes a main controllable pipeline, and the normally open water distribution pipeline includes a main normally open pipeline arranged in parallel with the main controllable pipeline. A number of branch controllable pipelines are arranged in parallel on the main controllable pipeline, and a number of branch normally open pipelines arranged alternately with the branch controllable pipelines are arranged in parallel on the main normally open pipeline.

[0013] As an optimized scheme, a number of the controllable nozzles are connected in parallel along the axial direction of the branch controllable pipeline to the lower circumferential wall of the branch controllable pipeline.

[0014] As an optimized scheme, a number of the normally open nozzles are connected in parallel along the axial direction of the branch normally open pipeline to the lower circumferential wall of the branch normally open pipeline.

[0015] As an optimized scheme, a control valve is connected to the main controllable pipeline.

[0016] As an optimized scheme, an air inlet is provided on the side wall of the cooling tower below the cooling and fog-eliminating system.

[0017] As an optimized solution, a fan is provided at the top of the cooling tower.

[0018] As an optimized solution, a water collector is provided in the area of the cooling tower above the water distribution system.

[0019] As an optimized solution, a reservoir is provided at the bottom of the cooling tower.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] Inside the tower body, a return water tank, a water distribution system, a cooling and demisting system, a water collector, and a fan are successively arranged from bottom to top. The water distribution system is divided into two parts. One part is a normally open water distribution system, and the other part is a controllable water distribution system. The normally open water distribution system is always open throughout the year, and the controllable water distribution system can be started and stopped according to user needs;

[0022] By using the controllable water distribution system, in the hot summer, the demand for cooling is large, and the controllable water distribution system is turned on. At this time, both the controllable water distribution system and the normally open water distribution system are in the open state, and the hot circulating water is evenly distributed on the cooling and demisting system, ensuring the heat exchange efficiency; the circulating water exchanges heat with the outside cold air entering the tower at the packing and heat exchange module to achieve the cooling effect;

[0023] In the cold winter, the controllable water distribution system is closed. At this time, only the normally open water distribution system is open. At this time, the cooling tower enters the demisting mode. The hot circulating water is sprayed through the nozzles onto one side of the packing and module of the cooling and demisting system, which can avoid the white fog phenomenon caused by the discharged saturated air. The cold air exchanges heat with the sprayed water through the heat channel to form saturated wet steam. The cold air exchanges heat with the circulating water in the hot air channel and the saturated wet steam formed by the heat exchange between the cold air and the circulating water through the cold channel to form dry and warm air. The saturated wet steam generated in the heat channel and the dry and warm air generated in the cold channel are mixed inside the tower body through the heat exchange module. At this time, the temperature and moisture content of the air are lower, and no white fog phenomenon will occur when it is discharged into the very low-temperature environment, realizing demisting and water saving at low temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 It is a schematic structural diagram of the present utility model;

[0026] Figure 2 It is a schematic structural diagram of the water distribution system of the present utility model;

[0027] Figure 3 This is a schematic structural diagram of the water distribution operation state of the water distribution system of the present utility model in winter;

[0028] Figure 4 This is a schematic structural diagram of the water distribution operation state of the water distribution system of the present utility model in summer.

[0029] In the figure: 1 - fan; 2 - water collector; 3 - water distribution system; 4 - cooling and fog elimination system; 5 - air inlet; 6 - reservoir; 7 - packing; 8 - heat exchange module; 9 - cold channel; 10 - hot channel; 11 - normally open nozzle; 12 - controllable nozzle; 13 - main controllable pipeline; 14 - branch controllable pipeline; 15 - control valve; 16 - main normally open pipeline; 17 - branch normally open pipeline. Specific embodiments

[0030] Hereinafter, embodiments of the technical solution of the present utility model will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and thus are only examples and cannot be used to limit the protection scope of the present utility model.

[0031] As Figures 1 to 4 shown, the new mechanical ventilation fog elimination cooling tower includes a cooling and fog elimination system 4 arranged inside the cooling tower. The cooling and fog elimination system includes packing 7 and a heat exchange module 8 arranged alternately in the horizontal direction. The heat exchange module 8 is provided with cold channels 9 and hot channels 10 arranged in a staggered manner.

[0032] A water distribution system 3 is provided in the area above the cooling and fog elimination system 4 of the cooling tower. The water distribution system 3 includes controllable nozzles 12 and normally open nozzles 11 arranged alternately in parallel. The spraying area of the normally open nozzles 11 covers the packing 7 and the outlet end of the hot channel 10. The spraying area of the controllable nozzles 12 covers the outlet end of the cold channel 9.

[0033] The structure of the heat exchange module 8 is common in daily life. For example, it is composed of multiple rows of heat exchange components arranged in a diamond shape. The heat exchange components are formed by arranging several diamond-shaped heat exchange membranes to form cold channels 9 and hot channels 10. The cold channels 9 and hot channels 10 are alternately distributed in sequence and do not communicate with each other.

[0034] The water distribution system 3 includes a controllable water distribution pipeline and a normally open water distribution pipeline. A plurality of controllable nozzles 12 are arranged in parallel and are distributed on the controllable water distribution pipeline; a plurality of normally open nozzles 11 are arranged in parallel and are distributed on the normally open water distribution pipeline.

[0035] The controllable water distribution pipeline includes a main controllable pipeline 13. The normally open water distribution pipeline includes a main normally open pipeline 16 arranged in parallel with the main controllable pipeline 13. A number of branch controllable pipelines 14 are arranged in parallel with the main controllable pipeline 13. A number of branch normally open pipelines 17 are arranged in parallel with the main normally open pipeline 16 and are alternately arranged with the branch controllable pipelines 14.

[0036] A number of controllable spray nozzles 12 are connected in parallel to the lower circumferential wall of the branch controllable pipeline 14 along the axial direction of the branch controllable pipeline 14.

[0037] A number of normally open spray nozzles 11 are connected in parallel to the lower circumferential wall of the branch normally open pipeline along the axial direction of the branch normally open pipeline.

[0038] A control valve 15 is connected to the main controllable pipeline 13.

[0039] An air inlet 5 is provided on the side wall of the cooling tower below the cooling and demisting system 4.

[0040] A fan 1 is provided at the top of the cooling tower.

[0041] A water collector 2 is provided in the area of the cooling tower above the water distribution system 3.

[0042] A water storage tank 6 is provided at the bottom of the cooling tower.

[0043] The working principle of this device is as follows:

[0044] Inside the tower body, a water return pool, a water distribution system 3, a cooling and demisting system 4, a water collector 2, and a fan 1 are arranged in sequence from bottom to top. The water distribution system 3 is divided into two parts. One part is a normally open water distribution system 3, and the other part is a controllable water distribution system 3. The normally open water distribution system 3 is always open, and the controllable water distribution system 3 can be started and stopped according to user needs;

[0045] Using the controllable water distribution system 3, in the hot summer, the demand for cooling is large, and the controllable water distribution system 3 is turned on. At this time, both the controllable water distribution system 3 and the normally open water distribution system 3 are in the open state. The hot circulating water is evenly distributed on the cooling and demisting system 4, ensuring the heat exchange efficiency; the circulating water exchanges heat with the outside cold air entering the tower at the packing 7 and the heat exchange module 8 to achieve the cooling effect;

[0046] In the cold winter, the controllable water distribution system is closed. At this time, only the normally open water distribution system 3 is turned on, and the cooling tower enters the demisting mode. The hot circulating water is sprayed through the nozzles onto the packing 7 and one side of the module of the cooling and demisting system 4, which can avoid the white fog phenomenon caused by the discharged saturated air. The cold air exchanges heat with the sprayed water through the hot channel 10 to form saturated wet steam. The cold air exchanges heat with the circulating water in the hot air channel and the saturated wet steam formed after the heat exchange between the cold air and the circulating water through the cold channel 9 to form dry and warm air. The saturated wet steam generated by the hot channel 10 and the dry and warm air generated by the cold channel 9 are mixed inside the tower body after passing through the heat exchange module 8. At this time, the temperature and moisture content of the air are lower, and no white fog phenomenon will occur when it is discharged into the very low-temperature environment, realizing demisting and water saving at low temperatures.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. New mechanical ventilation mist elimination cooling tower, characterized by: The cooling tower comprises a cooling and mist-eliminating system (4) arranged inside the cooling tower, the cooling and mist-eliminating system comprising fillers (7) and heat exchange modules (8) arranged alternately in a horizontal direction, the heat exchange modules (8) being provided with cold channels (9) and hot channels (10) arranged alternately, A water distribution system (3) is provided in the area of ​​the cooling tower above the cooling mist elimination system (4), wherein the water distribution system (3) comprises controllable nozzles (12) and normally open nozzles (11) which are alternately arranged in parallel, wherein the spraying area of ​​the normally open nozzles (11) covers the filler (7) and the outlet end of the hot channel (10), and the spraying area of ​​the controllable nozzles (12) covers the outlet end of the cold channel (9).

2. The novel mechanical ventilation mist elimination cooling tower according to claim 1 is characterized in that: The water distribution system (3) comprises a controllable water distribution pipeline and a normally open water distribution pipeline, a plurality of controllable nozzles (12) are arranged in parallel and distributed on the controllable water distribution pipeline; a plurality of normally open nozzles (11) are arranged in parallel and distributed on the normally open water distribution pipeline.

3. The novel mechanical ventilation mist elimination cooling tower according to claim 2 is characterized in that: The controllable water distribution pipeline comprises a main controllable pipeline (13), the normally open water distribution pipeline comprises a main normally open pipeline (16) arranged in parallel with the main controllable pipeline (13), a plurality of branch controllable pipelines (14) are arranged in parallel with the main controllable pipeline (13), and a plurality of branch normally open pipelines (17) arranged in parallel on the main normally open pipeline (16) and arranged alternately with the branch controllable pipelines (14).

4. The novel mechanical ventilation mist elimination cooling tower according to claim 3 is characterized in that: A plurality of controllable nozzles (12) are connected in parallel to the lower peripheral wall of the branch controllable pipeline (14) along the axial direction of the branch controllable pipeline (14).

5. The novel mechanical ventilation mist elimination cooling tower according to claim 4 is characterized in that: A plurality of the normally open nozzles (11) are connected in parallel on the lower peripheral wall of the branch normally open pipeline along the axial direction of the branch normally open pipeline.

6. The novel mechanical ventilation mist elimination cooling tower according to claim 5 is characterized in that: The main controllable pipeline (13) is connected to a control valve (15).

7. The novel mechanical ventilation mist elimination cooling tower according to claim 1 is characterized in that: An air inlet (5) is provided on the side wall of the cooling tower below the cooling and mist removal system (4).

8. The novel mechanical ventilation mist elimination cooling tower according to claim 1 is characterized in that: A fan (1) is provided on the top of the cooling tower.

9. The novel mechanical ventilation mist elimination cooling tower according to claim 1 is characterized in that: The cooling tower is provided with a water collector (2) in the area above the water distribution system (3).

10. The novel mechanical ventilation mist elimination cooling tower according to claim 1 is characterized in that: A water reservoir (6) is provided at the bottom of the cooling tower.

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