Fog dissipation cooling tower

Abstract

The utility model discloses a fog dispersal cooling tower, which belongs to the technical field of cooling towers and comprises a cooling tower body and a fog dispersal platform, the cooling tower body comprises a tower body, an induced draft fan is arranged in an air outlet cylinder of the tower body, a filler and a water distribution pipe are sequentially arranged in the tower body from bottom to top, and the fog dispersal platform comprises a fog dispersal module, an air duct door and an air blower. The two fog dispersal modules are oppositely arranged in the air outlet barrel and located above the induced draft fan, an air flue is formed between the two fog dispersal modules, the air flue door is rotatably arranged in the air flue, and the two air blowers are arranged on the outer side of the air outlet barrel and correspond to the fog dispersal modules one to one. A transverse dry and cold channel and a vertical damp and hot channel are arranged in the fog dispersal module, and an air outlet of the air blower is communicated with the dry and cold channel. According to the fog dispersal cooling tower disclosed by the utility model, the fog dispersal purpose can be achieved by additionally arranging the fog dispersal platform on the basis of not changing the structure of the original cooling tower body, so that the transformation workload is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a mist elimination cooling tower. Background Art

[0002] A cooling tower is a cooling device used to lower water temperature. During operation, a water pump lifts water from a water collection tray to the top of the tower, where it is sprayed onto the packing. Dry, cold air enters the cooling tower through the air inlet at the bottom of the tower via a fan at the top of the tower. It then flows through the packing from bottom to top, while circulating water flows through the packing from top to bottom, exchanging heat and moisture with the rising dry, cold air within the packing, thereby achieving the desired cooling effect. However, in cold weather, the hot, humid air discharged from the top of the cooling tower condenses into plume when it encounters cold air from outside. This not only affects the environment but also causes significant inconvenience to the lives and production of surrounding residents. To address this issue, the cooling tower's structure needs to be modified. The most common modification method is to install a demisting module within the tower, located between the induced draft fan and the packing. However, installing a demisting module alters the original cooling tower structure, requiring significant modification effort and damaging the tower's structural strength, resulting in poor reliability. Utility Model Content

[0003] The technical problem to be solved by the present invention is that in the prior art, it is a large workload to transform a conventional cooling tower into a demisting cooling tower. Based on this, the present invention provides a demisting cooling tower which can achieve demisting without changing the original cooling tower structure during modification.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a demisting cooling tower, comprising a cooling tower body and a demisting platform, the cooling tower body comprising a tower body, an induced draft fan being provided in the air outlet duct of the tower body, fillers and water distribution pipes being provided in sequence from bottom to top in the tower body, the demisting platform comprising a demisting module, an air duct door and a blower, the demisting modules having two and relatively arranged in the air outlet duct, the demisting modules being located above the induced draft fan, an air duct being formed between the two demisting modules, the air duct door being rotatably provided in the air duct, the blowers having two and being provided on the outside of the air outlet duct and corresponding one to one to the demisting modules, a horizontal dry cooling channel and a vertically arranged wet heat channel being provided in the demisting module, and the air outlet of the blower being connected to the dry cooling channel.

[0005] Furthermore, the horizontal cross-section of the air outlet duct is rectangular, the demisting module is a rectangular parallelepiped structure, the air duct door is a rectangular plate structure, and the demisting module is sealed to the inner wall of the air outlet duct.

[0006] Furthermore, a drive shaft is fixedly connected to the middle of the air duct door, one end of the drive shaft is rotatably connected to the side wall of the air outlet tube, and a drive motor for driving the drive shaft to rotate is installed on the side wall of the air outlet tube.

[0007] Furthermore, an air collecting hood is arranged between the blower and the demisting module. The horizontal cross-section of the air collecting hood is a conical structure. The air collecting hood has a large mouth end and a small mouth end that are connected to each other. The small mouth end is connected to the air outlet of the blower, and the large mouth end passes through the air outlet pipe and is connected to the demisting module corresponding to the dry cooling channel.

[0008] Furthermore, the mist elimination platform also includes a support frame, which includes a longitudinal frame and a transverse frame. The longitudinal frame is vertically arranged on the outside of the tower body, and the transverse frame is horizontally fixedly connected to the top of the longitudinal frame. The blower is fixedly installed on the transverse frame.

[0009] Furthermore, the air outlet duct is fixedly connected to the horizontal frame.

[0010] Furthermore, the cooling tower body further includes a water collector disposed in the tower body, and the water collector is located between the induced draft fan and the water distribution pipe.

[0011] The beneficial effect of the present invention is that the demisting cooling tower of the present invention can achieve the purpose of demisting by adding a demisting platform without changing the original cooling tower body structure. Compared with the traditional modification method, the modification workload is greatly reduced, and it is especially suitable for batch modification. At the same time, the cooling tower can be switched between demisting working conditions and non-demisting working conditions by switching the state of the air duct door, which is beneficial for users to reasonably select the working mode according to different seasons. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 It is a structural schematic diagram of the mist elimination cooling tower of the utility model;

[0014] Figure 2 yes Figure 1 Left side view of the mist elimination cooling tower shown;

[0015] Figure 3 yes Figure 1 The top view of the mist elimination platform in the mist elimination cooling tower is shown (the support frame is omitted).

[0016] In the figure: 10. Cooling tower body, 11. Tower body, 111. Air outlet duct, 12. Induced draft fan, 13. Filler, 14. Water distribution pipe, 15. Water collector, 20. Mist elimination platform, 21. Wind collecting hood, 22. Mist elimination module, 23. Duct door, 231. Drive shaft, 24. Blower, 25. Support frame, 251. Vertical frame, 252. Horizontal frame. DETAILED DESCRIPTION

[0017] The present invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0018] The utility model provides a demisting cooling tower, comprising a cooling tower body 10 and a demisting platform 20, the cooling tower body 10 comprising a tower body 11, an induced draft fan 12 is installed in an air outlet duct 111 at the top of the tower body 11, fillers 13 and a water distribution pipe 14 are installed in the tower body 1 from bottom to top, the demisting platform 20 comprises a demisting module 22, an air duct door 23 and a blower 24, the demisting module 22 has two and is relatively fixedly arranged in the air outlet duct 111, the demisting module 22 is located above the induced draft fan 12, an air duct (not marked in the figure) is formed between the two demisting modules 22, the air duct door 23 is rotatably installed in the air duct, the blower 24 has two and is arranged on the outside of the air outlet duct 111 and corresponds to the demisting module 22 one by one, a horizontal dry cooling channel and a vertical wet and hot channel are provided in the demisting module 22, wherein the dry cooling channel and the wet and hot channel are isolated from each other, and the air outlet of the blower 24 is connected to the dry cooling channel. In this embodiment, the mist elimination module 22 is a partition-type heat exchanger.

[0019] The utility model's mist elimination cooling tower has two working conditions: non-mist elimination and mist elimination, depending on the season. Specifically:

[0020] In the summer, the non-mist-eliminating mode is activated, the duct door 23 is driven to rotate and open (the duct door 23 is in a vertical position), and the blower 24 is not operated. At this time, when the cooling tower is in operation, circulating water is sprayed out through the nozzle on the water distribution pipe 14 and then falls onto the filler 13 below, passing through the filler 13 from top to bottom. At the same time, under the action of the induced draft fan 12, dry and cold air outside the tower enters the interior of the tower body 11 through the air inlet at the bottom of the tower, and passes through the filler 13 from bottom to top. In this process, heat is exchanged with the falling circulating water, thereby forming saturated humid hot air, which flows upward into the air outlet duct 111, and after passing through the air duct and the humid hot channel, escapes to the outside of the air outlet duct 111.

[0021] In winter, the defogging mode is activated, and the air duct door 23 is driven to rotate to close the air duct door 23 (the air duct door 23 is in a horizontal state). At the same time, the blower 24 is started to blow dry and cold air outside the tower into the dry and cold channel. At this time, when the cooling tower is working, the circulating water is sprayed out through the nozzle on the water distribution pipe 14 and then falls onto the filler 13 below, and passes through the filler 13 from top to bottom. At the same time, under the action of the induced draft fan 12, the dry and cold air outside the tower enters the interior of the tower body 11 through the air inlet at the bottom of the tower, and passes through the filler 13 from bottom to top. In this process, it exchanges heat with the falling circulating water, thereby forming saturated humid hot air, and flows upward into the air outlet 111. Since the air duct is closed by the air duct door 23, the humid hot saturated air can only flow upward along the humid hot channel. In the process of vertically passing through the humid hot channel, it will undergo inter-wall heat exchange with the dry and cold air in the dry and cold channel, so that part of the water vapor condenses on the channel wall of the humid hot channel and finally flows downward to the water pool at the bottom of the tower body 11, achieving the purpose of water saving. At the same time, the air passing through the demisting module 22 upward becomes unsaturated air. In this way, no plume will be formed after leaving the tower, which has a good demisting effect. In addition, the hot and humid air passing through the filler 13 upward will first be fully stirred and mixed under the action of the induced draft fan 12, and then flow upward into the hot and humid channel, ensuring that the hot and humid air can flow evenly into the hot and humid channel of the demisting module 22, which is beneficial to enhancing the heat exchange effect of the demisting module 22.

[0022] The demisting cooling tower of the present invention can achieve the purpose of demisting by adding a demisting platform 20 without changing the structure of the original cooling tower body 10. Compared with the traditional modification method, it greatly reduces the modification workload and is particularly suitable for batch modification. At the same time, by switching the state of the air duct door 23, the cooling tower can be switched between demisting working conditions and non-demisting working conditions, which is beneficial for users to reasonably select working modes according to different seasons.

[0023] As a preferred embodiment, the horizontal cross-section of the air outlet 111 is rectangular, the demisting module 22 is a rectangular parallelepiped structure, the air duct door 23 is a rectangular plate structure, and the demisting module 22 is sealed to the inner wall of the air outlet 111 to prevent the hot and humid air from escaping through the gap between the demisting module 22 and the air outlet 111. It can be understood that in other embodiments, the cross-section of the air outlet 111 can also be a circular structure, and the downward projections of the demisting module 22 and the air duct door 23 both fall into the air outlet 111. At this time, the area between the demisting module 22 and the air outlet 111 except for the hot and humid channel and the air duct door 23 is sealed with a tarpaulin or other sealing member, so that the rising airflow can only pass upward through the hot and humid channel and the air duct. The specific cross-sectional shape of the air outlet 111 is not limited.

[0024] Furthermore, a drive shaft 231 is fixedly connected to the middle of the air duct door 23, and one end of the drive shaft 231 is rotatably connected to the side wall of the air outlet tube 111. In order to drive the air duct door 23 to rotate, a drive motor is also installed on the side wall of the air outlet tube 111. The output shaft of the drive motor is fixedly connected to the drive shaft 231. When in use, the drive motor drives the drive shaft 231 to rotate, and then drives the air duct door 23 to rotate, so as to realize the switching of the air duct door 23 between horizontal and vertical positions.

[0025] In this embodiment, an air collecting hood 21 is provided between the blower 24 and the defogging module 22. The horizontal cross-section of the air collecting hood 21 is tapered, with a large end and a small end connected to each other. The small end is connected to the air outlet of the blower 24, and the large end passes through the air outlet 111 and is connected to the defogging module 22 corresponding to the dry cooling channel. In defogging operation, the air generated by the blower 24 passes through the air collecting hood 21 and enters the dry cooling channel. The provision of the air collecting hood 21 facilitates the even distribution of the air blown by the blower 24 into the dry cooling channel.

[0026] In this embodiment, the demisting platform 20 also includes a support frame 25, and the support frame 25 includes a vertical frame 251 and a horizontal frame 252. The vertical frame 251 is vertically arranged on the outside of the tower body 11, and the bottom of the vertical frame 251 is fixedly connected to the ground. The horizontal frame 252 is horizontally fixedly connected to the top of the vertical frame 251, and the blower 24 is fixedly installed on the horizontal frame 252. In addition, the air outlet 111 is fixedly connected to the horizontal frame 252 to enhance the structural strength of the air outlet 111, which is beneficial for the air outlet 111 to stably carry the demisting module 22 and the air duct door.

[0027] In this embodiment, the cooling tower body 10 also includes a water collector 15 provided in the tower body 11. The water collector 15 is located between the induced draft fan 12 and the water distribution pipe 14. When the hot and humid air passing through the filler 13 passes upward through the water collector 15, part of the water vapor in the air will be trapped on the water collector 15 and eventually fall into the water pool at the bottom of the tower body 11, effectively reducing the loss of circulating water.

[0028] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A mist dissipation cooling tower, characterized in that: The utility model comprises a cooling tower body and a demisting platform, wherein the cooling tower body comprises a tower body, an induced draft fan is provided in the air outlet duct of the tower body, fillers and water distribution pipes are provided in sequence from bottom to top in the tower body, and the demisting platform comprises a demisting module, an air duct door and a blower, the demisting modules have two and are arranged oppositely in the air outlet duct, the demisting modules are located above the induced draft fan, an air duct is formed between the two demisting modules, the air duct door is rotatably arranged in the air duct, the blowers have two and are arranged on the outside of the air outlet duct and correspond one to one to the demisting modules, a horizontal dry and cold channel and a vertically arranged wet and hot channel are provided in the demisting module, and the air outlet of the blower is connected to the dry and cold channel.

2. The mist dissipation cooling tower according to claim 1, wherein: The horizontal cross-section of the air outlet duct is rectangular, the demisting module is a rectangular parallelepiped structure, the air duct door is a rectangular plate structure, and the demisting module is sealed to the inner wall of the air outlet duct.

3. The mist dissipation cooling tower according to claim 2, wherein: A driving shaft is fixedly connected to the middle of the air duct door, one end of the driving shaft is rotatably connected to the side wall of the air outlet tube, and a driving motor for driving the driving shaft to rotate is installed on the side wall of the air outlet tube.

4. The mist dissipation cooling tower according to claim 1, wherein: An air collecting hood is arranged between the blower and the demisting module. The horizontal cross-section of the air collecting hood is a conical structure. The air collecting hood has a large mouth end and a small mouth end that are interconnected. The small mouth end is connected to the air outlet of the blower, and the large mouth end passes through the air outlet tube and is connected to the demisting module corresponding to the dry cooling channel.

5. The mist elimination cooling tower according to claim 1, wherein: The mist elimination platform also includes a support frame, which includes a longitudinal frame and a transverse frame. The longitudinal frame is vertically arranged on the outside of the tower body, and the transverse frame is horizontally fixedly connected to the top of the longitudinal frame. The blower is fixedly installed on the transverse frame.

6. The mist elimination cooling tower according to claim 5, characterized in that: The air outlet tube is fixedly connected to the horizontal frame.

7. The mist elimination cooling tower according to claim 1, wherein: The cooling tower body further includes a water collector arranged in the tower body, and the water collector is located between the induced draft fan and the water distribution pipe.

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