CN210165784U - Plate-type fog dissipation cooling tower - Google Patents

Abstract

The utility model discloses a plate-type fog-dissipation cooling tower, which comprises a tower body, wherein the tower body is provided with a water tank, an air inlet shutter, filler, a spraying device, a water collector, an air inlet and shutter, a flow mixer, a fog-dissipation module and a fan; the fog dispersal module is located the both sides of fan below tower body, constitute by two connection water tank and a plurality of parallel arrangement's heat transfer slab, the heat transfer slab is formed for the relative welding of corrugated slab by two cross-sections, the surface of heat transfer slab forms recess and tongue that the interval set up, the heat transfer slab is pressed into the ripple shape in order to acquire high turbulence degree and high coefficient of heat transfer, the mechanical rigidity of metal sheet has still been strengthened simultaneously, the heat transfer slab adopts the louver formula slope to arrange, the flow resistance of fan has been reduced, for finned tube form tube bank, the fan energy consumption reduces.

Description

Plate-type fog dissipation cooling tower

Technical Field

The utility model relates to a cooling tower, specifically speaking relates to a plate-type fog dissipation cooling tower, belongs to mechanical technical field.

Background

The cooling tower water-saving and fog-eliminating technology is developed by combining the advantages of an air cooling heat exchange system and a closed cooling mode and through meticulous theoretical calculation and rigorous scientific experiments. The technology is applied to the open mechanical ventilation cooling tower of a large industrial circulating water field of petrochemical, coalification and electric power, can reduce the evaporation loss of industrial cooling water, reduce the water consumption of an industrial circulating water system and reduce the generation of white fog, and is a novel technology of the large industrial cooling tower and the circulating water system.

In the operation process of a traditional mechanical ventilation cooling tower, saturated damp and hot air is generated after cold air exchanges heat with water in the cooling tower, and after the damp and hot air is mixed with the cold air, the damp and hot air is cooled and condensed to form a fog mass containing a plurality of tiny liquid particle groups, so that evaporation loss is caused. Meanwhile, because the height of the mechanical ventilation cooling tower is low, the visibility of surrounding residential areas and traffic roads is influenced by the drifting of fog masses, and the normal routing inspection of workers is influenced by the wet and slippery road surface around the cooling tower. With the improvement of environmental protection requirements, the water saving and fog dispersal of the mechanical ventilation cooling tower become more and more important.

The cooling tower water-saving and fog-dispersing modification technology can reduce blowing loss and evaporation loss, improve the utilization rate of hot circulating water, and more importantly, reduce or eliminate visible fog clusters while saving water resources, is an effective measure for industrial water saving and a brand new direction for fog dispersing, and has better application prospect in large-scale chemical circulating water farms.

According to the fog dissipation principle of the dry-wet type fog dissipation tower, water (part or whole) is circulated in a cooling system, the evaporation amount of water vapor is reduced, the temperature of cold air is increased, and then the heated cold air is mixed to reduce the relative humidity of saturated water vapor, so that the air connection line of the heated cold air and the ambient temperature is not intersected with the saturation curve of the water vapor.

At present, in actual production, the inventor finds that the prior art has at least the following defects: dry stage adopts

The finned tubes exchange heat, fin filth blockage can occur after long service life, and the use effect is linearly reduced. The dry section finned tube of the fog dissipation cooling tower is easy to dirty and block due to small fin spacing and difficult to maintain; the fan with dense fins and large air resistance has high power consumption; the circular tube has low turbulence, the inner side is close to the tube wall and is in laminar flow, and the heat transfer coefficient of the inner side is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem to above not enough, provide a plate-type fog dispersal cooling tower, overcome the easy stifled shortcoming of finned tube, realized high turbulence degree and coefficient of heat transfer, the thermal resistance is little, and heat transfer efficiency is higher.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a plate-type fog dispersal cooling tower which characterized in that: the device comprises a tower body, wherein a water pool, an air inlet shutter, a filler, a spraying device, a water collector, an air inlet, an air shutter, a flow mixer, a fog dispersal module and a fan are arranged on the tower body;

the fog dispersal module is located the both sides of fan below tower body, comprises two connection water tank and a plurality of parallel arrangement's heat transfer slab, and the heat transfer slab is formed for relative the setting of wave form slab by two cross-sections, and the surface of heat transfer slab forms the recess and the tongue that the interval set up.

Furthermore, a groove supporting body is arranged between the two plates at the position of the groove, and convex groove supporting bodies are arranged on two sides of the convex groove.

Furthermore, the heat exchange plates are arranged in a louver type inclined mode, a vertical mode or a horizontal mode.

Furthermore, the fan is located the tower body top, and the fan is the induced air formula.

Further, an air inlet and a shutter are arranged on the outer side of the fog dispersal module; the flow mixer is positioned between the fog dispersal modules at the two sides.

Further, the water collector is positioned below the flow mixer.

Furthermore, the spraying device is positioned below the water collector, and a spray head is arranged below a spray pipe of the spraying device.

Furthermore, a shutter air inlet is arranged on the tower body below the filler.

Furthermore, a water tank is arranged at the bottom of the equipment and is connected with a spray water pump.

The utility model adopts the above technical scheme, compare with prior art, have following advantage: by adopting the fog dissipation module, the heat exchange plates are pressed into a corrugated shape to obtain high turbulence and high heat transfer coefficient, meanwhile, the mechanical rigidity of the metal plate is enhanced, the heat exchange plates are obliquely arranged in a shutter type, the flow resistance of the fan is reduced, and compared with a finned tube type tube bundle, the energy consumption of the fan is reduced.

The heat exchange efficiency is durable, the maintenance cost is low, the thermal resistance is small, and the heat transfer efficiency is higher.

The present invention will be described in detail with reference to the following examples.

Drawings

FIG. 1 is a schematic structural view of a plate-type fog dispersal cooling tower in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a fog dispersal module in the embodiment of the present invention;

FIG. 3 is a side view of FIG. 2;

fig. 4 is a schematic structural diagram of a heat exchange plate in the embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is an enlarged fragmentary view of FIG. 5;

in the figure:

1-fan, 2-plate type fog dispersal module, 3-flow mixer, 4-air inlet and shutter, 5-water collector, 6-spraying device, 7-filler, 8-air inlet shutter, 9-water pool, 10-tower body, 11-water tank, 12-heat exchange plate, 13-groove, 14-convex groove, 15-groove support body and 16-convex groove support body.

Detailed Description

In the embodiment, as shown in fig. 1 to 6, a plate-type fog-dispersal cooling tower comprises a tower body 10, wherein the tower body 10 sequentially comprises a water tank 9 from bottom to top, the water tank 9 is provided with a spray water pump, an air inlet shutter 8, a filler 7, a spray device 6, a water collector 5, an air inlet and shutter 4, a flow mixer 3, a fog-dispersal module 2 and a fan 1.

The fan 1 is positioned at the top of the tower body 10 and is of an induced draft type.

The fog dispersal modules 2 are located on both sides of a tower body 10 below the fan 1 and are composed of two connecting water tanks 11 and a plurality of heat exchange plates 12 arranged in parallel, in this embodiment, the heat exchange plates 12 are arranged in a louver-type inclined manner, and can also be arranged vertically or horizontally, and the like. The heat exchange plate 12 is formed by oppositely arranging two plates with square wave-shaped sections, grooves 13 and convex grooves 14 are formed on the surface of the heat exchange plate 12 at intervals, a groove support body 15 is arranged between the two plates at the position of the groove 13, convex groove support bodies 16 are arranged on two sides of the convex groove 14, and the convex groove support bodies 16 are used for supporting the heat exchange plates 12 which are arranged in parallel; the heat exchange plate is made of stainless steel, heat conducting plastic and the like; water circulates in the channels of the heat exchange plates 12, air flows in the channels between the heat exchange plates 12, and the air and the water perform wall type heat exchange. The corrugated shape allows to obtain high turbulence and high heat transfer coefficient, while also enhancing the mechanical rigidity of the metal sheet. The heat exchange plates are obliquely arranged in a shutter mode, so that the flow resistance of the fan is reduced, and the energy consumption of the fan is reduced relative to a finned tube type tube bundle.

An air inlet and a shutter 4 are arranged on the outer side of the fog dispersal module 2; the water side is connected with the spraying device 6, the circulating water of the system firstly enters the fog dispersal module 2, is cooled by cold air at the air side and then enters the spraying device 6, and the air temperature is raised after heat exchange at the air side and is mixed with saturated wet air flowing out of the mixer 3.

The flow mixer 3 is positioned between the fog dispersal modules 2 on the two sides and is used for uniformly mixing saturated damp and hot air with heated air; the structure of the mixer 3 is currently common.

The water collector 5 is positioned below the mixer 3 and is used for collecting large liquid drops.

The spraying device 6 is positioned below the water collector 5, a nozzle is arranged below a spraying pipe of the spraying device and used for uniformly spraying circulating water onto the filler 7, the filler is a core component of the cooling tower and is formed by combining PCV plates, the filler enlarges the contact area of the circulating water and air, and the heat of the circulating water is absorbed by means of evaporation to achieve the purpose of cooling.

A louver air inlet 8 and an air side inlet are arranged on the tower body 10 below the filler 7, and air flows from bottom to top and is discharged through a fan air outlet.

The water tank 9 is positioned at the bottom of the equipment, the water tank 9 is connected with a spray water pump, most of water falls back to the water tank 9 after passing through the filler, and the circulation is repeated.

The water pump sends the spray water into the fog dispersal modules 2 at the two sides of the mixer 3, and the fog dispersal modules 2 are dry with the outside

The gas carries out heat exchange, the temperature of the spray water is reduced, the temperature of the air is increased, the spray water with the reduced temperature enters the spraying device above the filler 7, the spray water is uniformly sprayed on the surface of the filler 7 downwards by the nozzle, a uniform water film is formed outside the filler, the water film is continuously evaporated and vaporized, the heat of the water is absorbed, and the medium is cooled. The evaporation of the water film enables the air to pass through the filler, the humidity of the filler is greatly increased and is close to a saturated state, the fan pumps out the saturated wet air and enables the saturated wet air to pass through the water collector above the water spraying system, after water drops carried in the saturated wet air are removed, most of spray water, except a small amount of vaporized water, falls back into the water tank, and is pressurized by the circulating water pump for recycling. The saturated water vapor passes through the flow mixer and then is mixed with the air passing through the fog dispersal module 2, the relative humidity of the mixed wet air is reduced, and the saturated air is changed into unsaturated air. The mixed air is finally discharged into the atmosphere through an air duct of the fan under the suction effect of the fan and is discharged into the atmosphere from an air outlet. The fog dispersal module 2 plays a key role, air enters the air side of the fog dispersal module 2 through the shutter and performs recuperative heat exchange with the water side channel of the fog dispersal module 2, the air temperature is increased after heat exchange, and the circulating water temperature is reduced; the saturated water vapor passes through the flow mixer and then is mixed with the air heated by the fog dispersal module 2, the relative humidity of the mixed wet air is reduced, and the saturated air is changed into unsaturated air.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims (9)

1. The utility model provides a plate-type fog dispersal cooling tower which characterized in that: the device comprises a tower body (10), wherein a water pool (9), an air inlet shutter (8), a filler (7), a spraying device (6), a water collector (5), an air inlet and shutter (4), a mixer (3), a fog dispersal module (2) and a fan (1) are arranged on the tower body (10);

the fog dispersal module (2) is located the both sides of fan (1) below tower body (10), comprises two connection water tank (11) and a plurality of parallel arrangement's heat transfer slab (12), and heat transfer slab (12) are formed for the relative welding of wave form slab by two cross-sections, and the surface of heat transfer slab (12) forms recess (13) and tongue (14) that the interval set up.

2. A plate-type mist-dispersal cooling tower as defined in claim 1, wherein: a groove support body (15) is arranged between the two plate sheets at the position of the groove (13), and convex groove support bodies (16) are arranged on two sides of the convex groove (14).

3. A plate-type mist-dispersal cooling tower as defined in claim 1, wherein: the heat exchange plates (12) are arranged in a louver type inclined arrangement, a vertical arrangement or a horizontal arrangement.

4. A plate-type mist-dispersal cooling tower as defined in claim 1, wherein: the fan (1) is positioned at the top of the tower body (10) and is of an induced draft type.

5. A plate-type mist-dispersal cooling tower as defined in claim 1, wherein: an air inlet and a shutter (4) are arranged on the outer side of the fog dispersal module (2); the flow mixer (3) is positioned between the fog dispersal modules (2) at the two sides.

6. A plate-type mist-dispersal cooling tower as defined in claim 1, wherein: the water collector (5) is positioned below the mixer (3).

7. A plate-type mist-dispersal cooling tower as defined in claim 1, wherein: the spraying device (6) is positioned below the water collector (5), and a spray head is arranged below a spray pipe of the spraying device (6).

8. A plate-type mist-dispersal cooling tower as defined in claim 1, wherein: an air inlet shutter (8) is arranged on the tower body (10) below the filler (7).

9. A plate-type mist-dispersal cooling tower as defined in claim 1, wherein: the water pool (9) is positioned at the bottom of the equipment, and the water pool (9) is connected with a spray water pump.

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