CN210220752U - Water-saving switching type cooling tower - Google Patents
Water-saving switching type cooling tower Download PDFInfo
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- CN210220752U CN210220752U CN201920890248.8U CN201920890248U CN210220752U CN 210220752 U CN210220752 U CN 210220752U CN 201920890248 U CN201920890248 U CN 201920890248U CN 210220752 U CN210220752 U CN 210220752U
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Abstract
The utility model discloses a water-saving switching cooling tower, which is internally provided with a liquid outlet, an air inlet, a multi-pore-passage filler, a gas-liquid switching mechanism, a liquid distributor, a demister, a liquid distributing finned tube, a liquid inlet and an air outlet from bottom to top in sequence; the gas-liquid switching mechanism comprises a plurality of gas-liquid switching units, each gas-liquid switching unit comprises two fixed side plates which are arranged in parallel, the upper end of one fixed side plate is hinged with a movable cover plate, the other fixed side plate is provided with a vent seam, and the upper edge of the vent seam is provided with a guide vane which inclines downwards; the two fixed side plates are respectively connected with the top of the multi-channel filler in a sealing way through the supporting piece, at least one row of pore channels are positioned between the two fixed side plates, and at least one row of pore channels are positioned between two adjacent gas-liquid switching units; the movable cover plate of each gas-liquid switching unit is linked with the electric actuating mechanism. The utility model discloses a cooling tower can switch the heat transfer mode of cooling tower according to season and ambient temperature change, reduces the operation energy consumption of cooling tower when the white cigarette is disappeared in the water conservation.
Description
Technical Field
The utility model relates to a resource and environment field especially relate to a water-saving formula cooling tower that switches.
Background
Many industrial products are produced by hot working or thermal reaction, and products with the heat cannot enter the next working procedure or be stored, and in order to obtain the produced products, the produced products need to be condensed or cooled by water, and the water is heated in the process and loses the recycling function. In order to prevent the high water cost and environmental pollution caused by the discharge of industrial hot water, the industrial hot water needs to be cooled and the water resource is recycled.
The cooling tower is a device which takes ambient air as a circulating cold source and absorbs and discharges heat in high-temperature industrial circulating water to the atmosphere so as to reduce the circulating water temperature; the cooling is an evaporation heat dissipation device which utilizes the heat generated by the heat exchange of high-temperature circulating water after the high-temperature circulating water is in countercurrent contact with air to generate steam, and the steam volatilizes and takes away the heat to achieve the purposes of evaporation heat dissipation, convection heat transfer, radiation heat transfer and the like, so as to dissipate the waste heat generated in industry or refrigeration air conditioners to reduce the water temperature, thereby ensuring the normal operation of the system.
The cooling tower is mainly applied to the fields of air conditioner cooling systems, refrigeration series, injection molding, leather making, foaming, power generation, steam turbines, aluminum profile processing, air compressors, industrial water cooling and the like, and is mostly applied to the industries of electric power, air conditioner cooling, refrigeration and plastic chemical industry.
Along with the continuous development of the cooling tower industry, in order to improve the heat exchange effect of the cooling tower, the mechanical cooling tower which increases mechanical induced air at the outlet of the cooling tower to strengthen heat exchange greatly improves the heat exchange efficiency and reduces the volume of the cooling tower. Mechanical cooling towers are also widely used in more and more industries and enterprises.
At present, the conventional cooling tower with organic force has the following difficulties in the operation process: (1) the operation energy consumption is high: the existing cooling tower takes ambient air as a cold source, the ambient air temperature is high in summer, the gas-liquid temperature difference is small, the heat exchange efficiency is low, and the ambient air with a large volume and hot water heat exchange are needed. In order to ensure the normal operation of industrial production, the cooling tower is designed in a summer heat exchange mode, so that the surplus of the cooling tower in winter is too large, and the operation energy consumption is high; (2) the water-saving effect is poor: in the operation process of the cooling tower adopting an enthalpy difference heat exchange mode, the heat taken away by the industrial circulating water mainly comprises three parts of heat absorbed by ambient air, latent heat of evaporation and gasification of the circulating water and radiation and heat dissipation of a tower body, and the latent heat of evaporation and gasification of the circulating water is taken as a main part, so that a large amount of water is evaporated and lost in the heat exchange process; (3) the visual pollution is serious: when the temperature is low in winter, because the cooling tower adopts the enthalpy difference heat exchange mode to condense, a large amount of vapor evaporates and enters the air and is discharged along with the air, the relative humidity of the outlet air is higher, and the temperature of the discharged air is also higher, after the air is discharged into the atmosphere with lower temperature, the air rapidly carries out heat and humidity exchange with the low-temperature ambient air, the discharged air is supersaturated due to the cooling, and the mechanical cooling tower emits outlet vapor and is rapidly condensed to generate a large amount of white smoke. In winter, the humidity of the atmosphere in the nearby area is greatly increased under the relatively static environment of the atmosphere, so that the stability of the air is further improved, and the diffusion of pollutants in the air is influenced. The mechanical cooling tower is mostly built around the urban periphery and near the dense population areas such as the industrial area, and causes serious visual and environmental pollution in the low-temperature environment in winter.
SUMMERY OF THE UTILITY MODEL
The utility model provides a formula cooling tower is switched in water-saving can avoid cooling tower heat transfer process to cause the white cigarette phenomenon of elimination cooling tower when a large amount of moisture evaporation, still can switch the heat transfer mode of cooling tower according to season and ambient temperature change, reduces the operation energy consumption of cooling tower.
The specific technical scheme is as follows:
a water-saving switching cooling tower is provided with a liquid outlet at the bottom of the tower, an exhaust outlet at the top of the tower, and an air inlet, a multi-pore channel filler, a gas-liquid switching mechanism, a liquid distributor, a demister, a liquid distributing finned tube and a liquid inlet from bottom to top in the tower;
the air inlet and the air outlet are communicated with the atmospheric environment;
the liquid inlet, the liquid distribution finned tube and the liquid distributor are sequentially communicated through pipelines;
the pore channels of the multi-pore channel filler are communicated up and down and are distributed in a plurality of rows;
the gas-liquid switching mechanism comprises a plurality of gas-liquid switching units, each gas-liquid switching unit comprises two fixed side plates which are arranged in parallel, the upper end of one fixed side plate is hinged with a movable cover plate, the other fixed side plate is provided with a vent seam, and the upper edge of the vent seam is provided with a guide vane which inclines downwards; the two fixed side plates are respectively connected with the top of the multi-channel filler in a sealing way through the supporting piece, and at least one row of pore channels are ensured to be positioned between the two fixed side plates and at least one row of pore channels are positioned between two adjacent gas-liquid switching units;
the movable cover plate of each gas-liquid switching unit is linked with the electric actuating mechanism, so that the movable cover plate is far away from or close to the other fixed side plate to switch the opening and closing state of the channel between the two fixed side plates.
When the water-saving switching cooling tower provided by the utility model works, low-temperature air in the atmospheric environment enters the tower from the air inlet, sequentially passes through the porous filler, the gas-liquid switching mechanism, the liquid distributor, the demister and the liquid distributing finned tube, and is discharged from the air outlet; the high-temperature circulating water sequentially enters the tower through the liquid inlet and the liquid distribution finned tube, is uniformly dispersed by the liquid distributor, falls into the gas-liquid switching mechanism and the multi-pore-passage filler, finally falls into the tower bottom, and is discharged from the liquid outlet. The low-temperature air and the high-temperature circulating water perform countercurrent heat exchange, so that the cooling and recycling of the high-temperature circulating water are realized.
The utility model provides a water-saving formula cooling tower that switches has two kinds of mode of indirect heat transfer and direct heat transfer.
Indirect heat exchange mode: when the environmental temperature is lower (such as winter), the movable cover plate and the other fixed side plate are closed through the electric actuator, high-temperature circulating water enters a pore channel (a liquid flow channel) between two adjacent gas-liquid switching units through the flow guide effect of the movable cover plate and the guide vanes, and a liquid film is formed in the liquid flow channel and flows downwards; under the influence of the resistance of liquid flow in the liquid flow channel, most of low-temperature air enters a pore channel (air flow channel) between the two fixed side plates to rise and is discharged through the vent seam to continue rising, and the liquid flow and the air flow exchange heat indirectly through the filler. High-temperature circulating water and low-temperature air flow in the separate channels in the filler, so that gas-liquid indirect heat exchange is realized, a large amount of water evaporation caused in the heat exchange process of the cooling tower can be avoided, and the white smoke phenomenon of the cooling tower is eliminated.
When the ambient temperature is high (such as summer), the ambient air temperature is high, in order to ensure the cooling effect of the circulating hot water, the high-temperature circulating water needs to be directly subjected to heat exchange in large air, the movable cover plate and the other fixed side plate are in an open state through the electric actuating mechanism, and the high-temperature circulating water enters all the pore channels of the multi-pore channel filler after being uniformly distributed by the liquid distributor to form a liquid film to flow downwards; the low-temperature air directly exchanges heat with the liquid flow in the pore canal from bottom to top, the gas and the liquid are directly contacted to strengthen the heat exchange, the temperature of the high-temperature circulating water is quickly reduced, and the temperature of the air is quickly increased.
Can change according to season and ambient temperature the utility model discloses the heat transfer mode of water-saving switching formula cooling tower switches, reduces the operation energy consumption of cooling tower.
The above-mentioned low temperature and high temperature are relative.
Preferably, a row of pore channels are arranged between the two fixed side plates; a row of pore channels are arranged between two adjacent gas-liquid switching units. Therefore, in the indirect heat exchange mode, high-temperature circulating water and low-temperature air are respectively arranged in the two adjacent rows of pore passages, and the indirect heat exchange effect of the two pore passages is enhanced.
Preferably, the top end of the movable cover plate is provided with a folded edge. When the movable cover plate and the other fixed side plate are in a closed state, the folded edge is buckled at the top end of the other fixed side plate, and the function of guiding high-temperature circulating water falling from the upper side can be achieved.
Further, the width of the folded edge is 5-20 mm; the folded edge is perpendicular to the movable cover plate.
Preferably, the movable cover plate is provided with a connecting piece, the upper end of the connecting piece is hinged with a vertical connecting rod, and the vertical connecting rod is linked with the electric actuating mechanism through a horizontal connecting rod. The electric actuating mechanism is arranged outside the cooling tower, and controls the horizontal moving stroke of the horizontal connecting rod through the electric actuating mechanism, so as to control the opening and closing state between the movable cover plate and the other fixed side plate.
Preferably, in the opening and closing process of the movable cover plate, the included angle between the movable cover plate and the vertical direction is 0-50 degrees. Namely, when the movable cover plate and the other fixed side plate are in a closed state, the included angle between the movable cover plate and the vertical direction is 50 degrees, and the movable cover plate can be completely opened to be in a vertical state.
The guide vanes incline downwards and form an included angle of 30-50 degrees with the horizontal direction.
The number of the guide vanes is 3-10;
furthermore, the upper and lower gaps of two adjacent guide vanes are 10-35 mm; in each gas-liquid switching unit, the ratio of the total width of the upper and lower gaps between all the guide vanes to the inner diameter of the pore channel is 1: 1-2.5.
Preferably, the channels in the multicellular filler are S-shaped.
The shape of the S-shaped pore channel can effectively enhance the disturbance effect of the air flow and the liquid flow in the pore channel, and greatly improve the heat transfer efficiency among the air flow, the liquid flow and the filler while increasing the gas-liquid heat exchange area.
The multi-pore channel filler is composed of a plurality of porous filler modules; each porous filler module is a cube, and the height of each porous filler module is 0.6-1.1 m.
The porous filler module consists of a plurality of corrugated filler membranes; the corrugated packing diaphragm is provided with S-shaped grooves and convex grooves which are arranged at intervals, the top of the convex groove of one corrugated packing diaphragm is connected with the bottom of the groove of the other corrugated packing diaphragm, and an S-shaped pore channel is formed between two adjacent corrugated packing diaphragms.
The cross section of the groove or the convex groove is circular or trapezoidal.
Preferably, the thickness of the corrugated filler membrane is 0.2 mm-1 mm.
Preferably, the width of the groove or the convex groove is 30 mm-70 mm, and the depth is 20 mm-40 mm.
Preferably, the top end of the corrugated packing membrane is provided with a folding straight edge; the height of the folding straight edge is 50 mm-80 mm.
And a fixed side plate of the gas-liquid switching mechanism is hermetically connected with the folding straight edge of the corrugated packing diaphragm through a support piece.
The liquid distributor is arranged above the gas-liquid switching mechanism. The liquid distributor consists of liquid distribution nozzles and horizontal liquid distribution pipes, the lower end of each horizontal liquid distribution pipe is provided with a plurality of liquid distribution nozzles communicated with the horizontal liquid distribution pipe, all the liquid distribution nozzles are uniformly distributed on the section of the cooling tower, and preferably, the water distribution density on the section of the cooling tower is 5m3/h～20m3/h。
The liquid distribution finned tube is horizontally arranged in the section of the cooling tower above the demister, the outer wall of the liquid distribution finned tube is connected with a plurality of fins which are perpendicular to the liquid distribution finned tube and distributed at equal intervals, preferably, the height of the fins of the liquid distribution finned tube is 20-40 mm, the interval of the fins is 2-5 mm, and the ratio of the total surface area of the fins to the surface area of the outer wall of the tube is 10-20: 1.
The liquid distribution finned tube is communicated with the horizontal liquid distribution tube through liquid distribution branch tubes, and the liquid distribution branch tubes vertically penetrate through the demister layer.
The demister is positioned between the liquid distribution finned tube and the horizontal liquid distribution tube, a plurality of liquid distribution branch tubes vertically penetrate through the demister, the demister can realize vertical through of air flow, and the height of the demister is 200-400 mm as preferred.
The exhaust port is positioned at the top of the cooling tower, a drainage fan is arranged in the exhaust port and used for air flow ascending and discharging, and preferably, the air flow speed in the tower is 1.0-3.0 m/s.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model provides a cooling tower water conservation heat transfer's solution: the gas-liquid channel of the packing membrane is partitioned by the gas-liquid switching mechanism, so that indirect heat exchange between high-temperature hot water and low-temperature ambient air through the packing membrane is realized, a large amount of water is prevented from evaporating in the heat exchange process of the traditional cooling tower, and water-saving heat exchange of the cooling tower is realized;
(2) the utility model provides a realize solution of high-efficient heat transfer of cooling tower: the cross-arranged fillers with S-shaped corrugations are used for distributing liquid and guiding gas to flow, so that the disturbance effect of gas flow and liquid flow in the fillers is effectively enhanced, the gas-liquid heat exchange area is increased, and the heat transfer efficiency among the gas flow, the liquid flow and the filler membrane is greatly improved;
(3) the utility model provides a solution of white cigarette is disappeared to cooling tower: the unsaturated air which completes heat exchange in the filler and direct heat exchange below the liquid distributor is defoamed by the defoamer, the liquid distributing finned tube is reused for reheating the defoamed air, the unsaturation degree of the flue gas is greatly improved, the air which completes cooling is free of white smoke emission, and visual pollution and environmental pollution of a cooling tower are effectively avoided.
Drawings
FIG. 1 is a schematic structural view of a water-saving switching cooling tower according to the present invention;
FIG. 2 is a schematic view showing the state of the multi-channel packing and the gas-liquid switching mechanism, in which (a) the movable lid plate and the other fixed side plate are in a closed state, and (b) the movable lid plate and the other fixed side plate are in an open state;
FIG. 3 is a schematic structural diagram of a corrugated packing diaphragm;
fig. 4 is a schematic structural view of the gas-liquid switching mechanism, in which (a) the movable cover plate and the other fixed side plate are in a closed state, and (b) the movable cover plate and the other fixed side plate are in an open state;
fig. 5 is a schematic structural view of the movable member.
Detailed Description
The invention will be described in further detail with reference to the following figures and examples, which are intended to facilitate the understanding of the invention without limiting it.
The utility model discloses a water-saving formula cooling tower that switches mainly used industrial circulation hydrothermal heat transfer cooling reduces the evaporation of water and eliminates the cooling tower white smoke phenomenon of industrial circulation hot water heat transfer process simultaneously.
As shown in fig. 1, a water-saving switching cooling tower 1 comprises a liquid outlet 2, an air inlet 3, a multi-pore passage filler 4, a gas-liquid switching mechanism 5, a liquid distributor 6, a demister 7, a liquid distributing finned tube 8, a liquid inlet 9 and an exhaust port 10; the liquid outlet 2, the air inlet 3, the multi-pore passage filler 4, the gas-liquid switching mechanism 5, the liquid distributor 6, the demister 7, the liquid distributing finned tube 8, the liquid inlet 9 and the exhaust port 10 are sequentially arranged in the cooling tower 1 from bottom to top. The liquid discharge port 2 is communicated with the bottom of the cooling tower 1, the lower part of the cooling tower 1 is communicated with the atmospheric environment through the air inlet 2, the liquid inlet 9 is communicated with the liquid distribution finned tube 8 through a pipeline, the liquid distribution finned tube 8 is communicated with the liquid distributor 6 through a pipeline, and the exhaust port 10 is communicated with the external atmospheric environment.
As shown in fig. 2 and 3, the multi-channel packing 4 is composed of a plurality of multi-channel packing modules, the height of each multi-channel packing module is 0.6m to 1.1m, and each multi-channel packing module is of a cube structure.
Each multi-channel packing module comprises an S-shaped corrugated packing membrane 4-1, a liquid flow channel 4-2 and a gas flow channel 4-3.
Each multi-channel packing module is formed by bonding a plurality of packing membranes 4-1 with S-shaped corrugations. The S-shaped corrugated packing membrane 4-1 consists of bonding points 4-5, concave-convex grooves 4-6 and top folding straight edges 4-4. The S-shaped corrugated packing membrane 4-1 is characterized in that concave grooves and convex grooves which are regularly arranged on the S-shaped corrugated packing membrane 4-1 are arranged in an S shape from top to bottom on the packing membrane 4-1, a plurality of concave hemispherical bonding points for membrane bonding are arranged at equal intervals at the bottom of the concave grooves, a plurality of convex hemispherical bonding points which are arranged at equal intervals at the tops of the convex grooves and correspond to the concave hemispherical bonding points are arranged at the tops of the convex grooves, the S-shaped corrugated packing membrane 4-1 is bonded into a multi-hole packing module through the bonding points, and a plurality of S-shaped holes which penetrate through the packing module up and down are formed by S-shaped concave-convex grooves which are.
The cross section of the concave-convex groove 4-6 is trapezoidal, the thickness of the S-shaped corrugated packing membrane 4-1 is 0.2 mm-1 mm, the bonding point 4-5 is a hemispherical convex point with the radius of 1 mm-5 mm, the width of the concave-convex groove 4-6 is 30 mm-70 mm, the depth is 20 mm-40 mm, and the height of the folding straight edge 4-4 is 50 mm-80 mm.
The gas-liquid switching mechanism 5 comprises a plurality of gas-liquid switching units which are arranged above the porous filler 4. As shown in fig. 4 and 5, the gas-liquid switching unit is composed of a support 5-1, a fixed side plate 5-2, a movable piece 5-3, a movable cover plate 5-4, a connecting piece 5-5 and a guide vane 5-6, and the width of each gas-liquid switching unit is consistent with the width of the S-shaped packing. The fixed side plate 5-2 of the gas-liquid switching unit comprises a left fixed side plate and a right fixed side plate, and the lower ends of the left fixed side plate and the right fixed side plate are respectively in sealing connection with the folding straight edges 4-4 at the tops of two adjacent S-shaped corrugated packing membranes 4-1 through supporting pieces 5-1.
The movable piece 5-3 comprises an upper blade, a lower blade and a connecting shaft, and the upper blade and the lower blade of the movable piece can rotate around the connecting shaft. The lower blade of the moving part 5-3 is welded with the top end of the left fixed side plate of the gas-liquid switching unit, the upper blade of the moving part 5-3 is welded with the lower end of the movable cover plate 5-4, the top end of the movable cover plate 5-4 is provided with a folded edge, the width of the folded edge is 5-20 mm, and the folded edge is perpendicular to the movable cover plate 5-4.
The upper part of each movable cover plate is connected with a connecting piece 5-5, the upper end of each connecting piece 5-5 is provided with a vertical connecting rod, a plurality of vertical connecting rods are fixed on a horizontal connecting rod, one end of each horizontal connecting rod is communicated with an electric actuating mechanism outside the cooling tower, and the horizontal connecting rods are controlled by the electric actuating mechanisms to move horizontally, so that the opening and closing angles of the movable cover plates are controlled. The included angle between the opening and closing process of the movable cover plate and the vertical direction is 0-50 degrees.
The middle part of the right fixed side plate is of a hole structure, and a plurality of guide vanes 5-6 which are distributed at equal intervals are horizontally arranged at the hole part. 3-10 guide vanes 5-6 are installed, the angle between the lower end hem of the guide vanes 5-6 and the horizontal is 30-50 degrees, the width of the vertical gap between the folding pieces is 10-35 mm, and the ratio of the total width of the vertical gap between the folding pieces to the space between the S-shaped filling membranes is 1: 1-2.5.
And each gas-liquid switching unit is communicated with an S-shaped channel formed between two corresponding S-shaped packing diaphragms, and the inside of each gas-liquid switching unit is communicated with the inner space of the tower body of the cooling tower through a folded guide vane gap.
The liquid distributor 6 consists of a liquid distribution nozzle and horizontal liquid distribution pipes, and the lower end of each horizontal liquid distribution pipe is provided withA plurality of liquid distribution nozzles communicated with the cooling tower are arranged, all the liquid distribution nozzles are uniformly distributed on the section of the cooling tower, and the water distribution density on the section of the cooling tower is 5m3/h～20m3/h。
The liquid distribution finned tube 8 is horizontally arranged in the section of the cooling tower above the demister, the outer wall of the liquid distribution finned tube 8 is connected with a plurality of fins which are perpendicular to the liquid distribution finned tube at equal intervals, the height of the fins of the liquid distribution finned tube is 20-40 mm, the interval of the fins is 2-5 mm, and the ratio of the surface area of the fins to the surface area of the outer wall of the tube is 10-20: 1.
The foam suppressor 7 is positioned between the liquid distribution finned tube 8 and the horizontal liquid distribution tube, a plurality of liquid distribution branch tubes vertically penetrate through the foam suppressor 7, and the foam suppressor 7 can realize vertical through of air flow. The height of the foam breaker 7 is 200 mm-400 mm.
The exhaust port 10 is located at the top of the cooling tower 1, and a drainage fan is arranged inside the exhaust port 10 and used for ascending and discharging airflow. The air flow rate between the cooling towers is 1.0-3.0 m/s.
The heat exchange mode can be switched according to seasons and ambient air temperature, and specifically the summer operation mode and the winter operation mode are adopted.
When the cooling tower is put into operation, low-temperature ambient air enters the cooling tower 1 from the air inlet 3 at the bottom of the cooling tower 1 to flow upwards under the action of air introduced into the air outlet 10 at the top of the cooling tower 1, and high-temperature circulating water enters the cooling tower 1 from the liquid inlet at the upper part of the cooling tower 1 to flow downwards.
In winter or when the ambient air temperature is lower, the electric actuator outside the cooling tower 1 is adjusted to control the horizontal connecting rod above the gas-liquid switching mechanism 5 to move horizontally rightwards, so that the top ends of the movable cover plate 5-4 and the right fixed side plate 5-2 of the gas-liquid switching unit are in a closed state. High-temperature liquid drops uniformly dispersed by a liquid distributor 6 enter a gas-liquid switching mechanism 5 under the action of gravity, high-temperature circulating water is guided by a movable cover plate 5-4 and guide vanes 5-6 to enter a porous liquid flow channel 4-2 between two adjacent gas-liquid switching units and flows downwards along a corrugated channel, under the action of S-shaped corrugations of the channel, the high-temperature circulating water forms a water film and flows downwards along the wall surface of a packing membrane 4-1, heat is uniformly transferred to the packing membrane 4-1 to complete cooling condensation, and the low-temperature circulating water after cooling condensation falls into a liquid storage tank below a cooling tower 1 from the bottom of the porous packing 4 and is discharged to a production workshop through a liquid discharge port 2 for recycling. The low-temperature ambient air entering the cooling tower 1 from the air inlet 3 enters the multi-channel filler 4 and is influenced by the liquid flow resistance of the liquid flow channel 4-2, most of the low-temperature ambient air rises along the air flow channel 4-3 in the multi-channel filler 4, the low-temperature ambient air changes the flow direction back and forth to be in turbulent contact with the filler membrane 4-1 under the action of S-shaped corrugations in the air flow channel 4-3, the heat transmitted to the filler membrane 4-1 by the high-temperature circulating water is fully absorbed, gas-liquid indirect heat exchange is realized, the high-temperature ambient air which completes heat exchange and temperature rise passes through the porous filler 4 to enter the gas-liquid switching unit 5 and passes through a gap between the guide vanes 5-6 in the right fixed side plate 5-2 to enter the liquid distribution area, and. A small amount of hot water is evaporated in the heat exchange process of the liquid distribution area of the flue gas and is simultaneously influenced by the air flow, a small amount of fine high-temperature liquid drops rise along with the air flow and pass through the demister 7, after defoaming and trapping by the demister 7, the dry flue gas continues to flow upwards and is in contact with the liquid distribution finned tube 9, the heat of the high-temperature circulating hot water in the liquid distribution finned tube 8 is transferred to fins connected with the outer wall of the tube, the flue gas is further subjected to heat exchange and is heated to be unsaturated, and the high-temperature ambient air for completing multistage heat exchange and temperature rise is.
In summer or when the ambient air temperature is high, the electric actuator outside the cooling tower 1 is adjusted to control the horizontal connecting rod above the gas-liquid switching mechanism 5 to horizontally move leftwards, so that the top ends of the movable cover plate 5-4 and the right fixed side plate 5-2 of the gas-liquid switching unit are in an open state, and the movable cover plate 5-4 is fixed in the vertical direction. The high-temperature liquid drops dispersed uniformly by the liquid distributor 6 pass through the gas-liquid switching mechanism 5 under the action of gravity to enter the multi-pore filler 4 and flow downwards along the pore channel; the low-temperature environment air entering the cooling tower 1 from the air inlet 3 enters the multi-channel filler 4 and flows upwards along the multi-channel, an S-shaped corrugated pore channel in the filler is a gas-liquid countercurrent channel in a summer mode, the gas-liquid countercurrent channel is influenced by an S-shaped corrugated surface, gas-liquid directly strengthens heat exchange, the temperature of high-temperature circulating water is quickly reduced, the temperature of the air is quickly increased, meanwhile, part of hot water is evaporated into water vapor and enters the gas phase, and the humidity of heat exchange air is increased. The low-temperature circulating water after heat exchange falls into a liquid storage tank below the cooling tower 1 from the bottom of the porous filler 4 and is discharged outside to a production workshop through a liquid outlet 2 for recycling. The high-temperature and high-humidity ambient air which completes heat exchange and temperature rise passes through the gas-liquid switching unit 5 to enter the liquid distribution area, and further exchanges heat with high-temperature circulating water dispersed by the liquid distributor 6. A small amount of hot water is evaporated in the heat exchange process of the liquid distribution area of the flue gas and is simultaneously influenced by the air flow, a small amount of fine high-temperature liquid drops rise along with the air flow and pass through the demister 7, after defoaming and trapping by the demister 7, the dry flue gas continues to flow upwards and contacts with the liquid distribution finned tube 9, the heat of the high-temperature circulating hot water in the liquid distribution finned tube 8 is transferred to the fins connected with the outer wall of the tube, the temperature of the flue gas is raised to be unsaturated through heat exchange, and the high-temperature environment air for completing multistage heat exchange and temperature rise is.
The utility model discloses a to the new fin heat transfer cooling that advances of high temperature circulating water, cloth liquid district heat transfer cooling and the tertiary cooling of S-shaped ripple packing heat transfer cooling realize high-efficient condensation, carry out tertiary heat transfer to the heat transfer flue gas and heat up meanwhile, realize the unsaturated emission of flue gas, eliminate the white smoke phenomenon and the water waste of current cooling tower heat transfer process, simultaneously the utility model provides a cooling tower still can be according to ambient temperature change and operation demand, adjust movable cover plate 5-4 among the gas-liquid switching mechanism to other angles, realize the overflowed air volume of liquid flow channel 4-2 and air current channel 4-3.
The above-mentioned embodiment is right the technical scheme and the beneficial effect of the utility model have carried out the detailed description, it should be understood to be above only do the concrete embodiment of the utility model, and not be used for the restriction the utility model discloses, the fan is in any modification, supplementary and equivalence replacement etc. of doing in the principle scope of the utility model all should be contained within the protection scope of the utility model.
Claims (10)
1. A water-saving switching cooling tower is provided with a liquid outlet at the bottom of the tower, an exhaust outlet at the top of the tower and a drainage fan inside the exhaust outlet, and is characterized in that an air inlet, a multi-pore channel filler, a gas-liquid switching mechanism, a liquid distributor, a demister, a liquid distribution finned tube and a liquid inlet are sequentially arranged in the tower from bottom to top;
the air inlet and the air outlet are communicated with the atmospheric environment;
the liquid inlet, the liquid distribution finned tube and the liquid distributor are sequentially communicated through pipelines;
the pore channels of the multi-pore channel filler are communicated up and down and are distributed in a plurality of rows;
the gas-liquid switching mechanism comprises a plurality of gas-liquid switching units, each gas-liquid switching unit comprises two fixed side plates which are arranged in parallel, the upper end of one fixed side plate is hinged with a movable cover plate, the other fixed side plate is provided with a vent seam, and the upper edge of the vent seam is provided with a guide vane which inclines downwards; the two fixed side plates are respectively connected with the top of the multi-channel filler in a sealing way through the supporting piece, and at least one row of pore channels are ensured to be positioned between the two fixed side plates and at least one row of pore channels are positioned between two adjacent gas-liquid switching units;
the movable cover plate of each gas-liquid switching unit is linked with the electric actuating mechanism, so that the movable cover plate is far away from or close to the other fixed side plate to switch the opening and closing state of the channel between the two fixed side plates.
2. A water-saving switching cooling tower according to claim 1, wherein the removable cover panel is flanged at a top end thereof; the width of the folded edge is 5 mm-20 mm.
3. A water-saving switching cooling tower as claimed in claim 1, wherein the movable cover plate is provided with a connecting member, the upper end of the connecting member is hinged with a vertical connecting rod, and the vertical connecting rod is linked with the electric actuator through a horizontal connecting rod.
4. A water-saving switching cooling tower according to claim 1 or 3, wherein the angle between the movable cover plate and the vertical direction is 0 ° to 50 ° during opening and closing of the movable cover plate.
5. A water-saving switching cooling tower according to claim 1, wherein the number of guide vanes is 3 to 10; the upper and lower gaps of two adjacent guide vanes are 10-35 mm; in each gas-liquid switching unit, the ratio of the total width of the upper and lower gaps between all the guide vanes to the inner diameter of the pore channel is 1: 1-2.5.
6. A water-saving switching cooling tower according to claim 1, wherein the cells in the multi-cell packing are S-shaped.
7. A water-saving switching cooling tower according to claim 1 or 6, wherein the multi-hole packing is comprised of a plurality of multi-hole packing modules; the porous filler module consists of a plurality of corrugated filler membranes; the corrugated packing diaphragm is provided with S-shaped grooves and convex grooves which are arranged at intervals, the top of the convex groove of one corrugated packing diaphragm is connected with the bottom of the groove of the other corrugated packing diaphragm, and an S-shaped pore channel is formed between two adjacent corrugated packing diaphragms.
8. A water-saving switching cooling tower according to claim 7, wherein the grooves or the tongues have a width of 30mm to 70mm and a depth of 20mm to 40 mm.
9. A water-saving switching cooling tower according to claim 7, wherein the corrugated packing diaphragm has a folded straight edge at its top end; the height of the folding straight edge is 50 mm-80 mm; and a fixed side plate of the gas-liquid switching mechanism is hermetically connected with the folding straight edge of the corrugated packing diaphragm through a support piece.
10. A water-saving switching cooling tower according to claim 1, wherein the distribution finned tube is composed of a distribution tube and fins vertically arranged outside the distribution tube at equal intervals; the height of the fins is 20-40 mm, the distance between the fins is 2-5 mm, and the ratio of the total surface area of the fins to the surface area of the outer wall of the liquid distribution pipe is 10-20: 1.
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| CN201920890248.8U CN210220752U (en) | 2019-06-13 | 2019-06-13 | Water-saving switching type cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920890248.8U CN210220752U (en) | 2019-06-13 | 2019-06-13 | Water-saving switching type cooling tower |
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| CN210220752U true CN210220752U (en) | 2020-03-31 |
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