Water spraying and fog dispersal filler unit and cooling tower with same

Abstract

The invention relates to the field of cooling towers, and discloses a water spraying and fog dispersal packing unit and a cooling tower with the water spraying and fog dispersal packing unit, the water spraying and fog dispersal packing unit comprises a plurality of main packing sheets which are arranged in a stacked mode, and a plurality of fluid channels which are distributed in the stacking direction and located between the adjacent main packing sheets respectively are formed; each fluid channel is provided with a water inlet and air outlet located at the upper end and an air inlet located at the lower end, a sawtooth area comprising a plurality of sawtooth units is formed in the portion, adjacent to the air inlet, of each main packing sheet, and the adjacent main packing sheets are separated from each other at the bottom tip ends of the sawtooth units so as to form a water outlet used for discharging spraying water. And at least one side edge of the sawtooth unit is separated from each other to form the air inlet. According to the water spraying and fog dispersal packing unit, the flowing paths of discharged spraying water and introduced cooling air at the lower part of the water spraying and fog dispersal packing layer are different, the problem of gas-liquid entrainment can be effectively avoided, meanwhile, structures such as a lower partition plate can be omitted, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of cooling towers, and in particular to a water spraying and mist dispelling packing unit. Based on this, the present invention also relates to a cooling tower having a water spraying and mist dispelling packing layer composed of the water spraying and mist dispelling packing unit. Background Art

[0002] In the petroleum, chemical and other industries, circulating water cooling systems are widely built. Traditional open cooling towers use water-spraying fillers to cool circulating water. The circulating hot water from the process device enters the cooling tower spray system, and forms spray circulating hot water through the water-spraying nozzle. The spray circulating hot water enters the water-spraying filler from top to bottom. The filler is generally made of PVC sheets. Water enters the filler and forms a water film along the PVC sheet. The dry and cold air from the outside enters the filler from bottom to top, and exchanges heat with the water film. The water film evaporates and cools down. The air is heated and humidified to form hot and humid air. A fan is installed on the top of the cooling tower to discharge the hot and humid air out of the tower, and the circulating hot water is cooled and turned into circulating cold water. The hot and humid air coming out of the top of the water-spraying filler is discharged out of the tower through the cooling tower wind tube. Because the hot and humid air discharged out of the tower is high in humidity and temperature, when the ambient temperature is low, the hot and humid air is discharged out of the tower and mixed with the cold air. Due to cooling and condensation, a fog containing many tiny liquid particle groups is formed.

[0003] In Tongchadi, most of the water-saving and mist-eliminating technologies for cooling towers are to add a layer of water-saving and mist-eliminating filler above the water-sprinkling filler of the cooling tower. The water-saving and mist-eliminating filler is used to exchange heat between the hot and humid air coming from the water-sprinkling filler and the dry and cold air outside, thereby achieving the purpose of water-saving and mist-eliminating. This technical route requires increasing the tower height, otherwise there is no installation space for the added layer of mist-eliminating filler. This type of technology is generally suitable for newly built towers, and the tower height is increased during the design to allow the installation of the upper layer of mist-eliminating filler. For the large number of ordinary water-sprinkling cooling towers in operation at this stage, the above technology is not applicable.

[0004] Chinese invention patent application CN111895851A discloses a packing module and a cooling tower, wherein an upper guide portion of an upper triangle with a vertex pointing to the top of the packing module and an upper longitudinal guide portion connected to the inflow side hypotenuse of the upper triangle are formed in the vertical direction of the packing module; and a lower guide portion of a lower triangle with a vertex pointing to the bottom of the packing module and a lower longitudinal guide portion connected to the outflow side hypotenuse of the lower triangle are formed in the lower part of the packing module. By providing a longitudinal guide portion for each main packing sheet, the packing module is basically formed into a rectangular parallelepiped, which can evenly guide water to the functional part of the packing module and evenly discharge the water in the packing module. By providing a flaring structure, the packing module cleverly utilizes the non-inflow side space of the first and second main packing sheets, deflects the partition sheet to the packing sheet side, increases the path of the first flow path and the second flow path corresponding to the position of the lower longitudinal guide portion, and reduces the wind resistance.

[0005] However, there are many problems with the above-mentioned prior art: 1. A partition is inserted between the two main filling sheets inside the water-spraying and defogging filling module, and the partition can only be used as a heat exchange sheet for cold and hot fluids. The two sides of the surface of the main filling sheet are the same fluid and cannot participate in heat exchange, resulting in that during the defogging operation, only half of the diaphragm area of ​​the diaphragm in the filler participates in heat exchange, and the water-saving and defogging capacity is halved; 2. At the upper guide portion, the first main filling sheet guides the water sprayed in from one side of the hypotenuse as the inlet side to the middle of the approximately full width of the first main filling sheet; at the lower guide portion, the water is guided from the middle of the approximately full width of the first main filling sheet to the other side of the outflow side hypotenuse or the one side hypotenuse, and the upper triangular area of ​​the defogging module It is a distribution structure, and the lower triangle is a drainage air inlet. The upper and lower structures are one-to-one. If the width of the demisting module is large, the water discharge of the demisting water outlet structure is uneven. If the width of the demisting module is small, the spreading nozzles above the demisting module need to be densely arranged. The spacing between the existing cooling tower spray branches is generally about 800mm-1500mm, which is extremely poor in actual use, especially for large industrial cooling towers; 3. The lower triangle of the demisting filler module serves as both an air inlet and a water outlet. Gas-liquid entrainment is likely to occur at this position. The cooling tower using this module can only be equipped with a large number of partitions at the bottom of the module for dividing the air inlet duct and supporting the module. The entire lower partition of the cooling tower is densely covered, which is costly and difficult to maintain. Summary of the invention

[0006] The purpose of the present invention is to overcome the problem of gas-liquid entrainment that is easy to occur in the lower part of the water spraying and defogging packing layer in the prior art, and to provide a water spraying and defogging packing unit, which is suitable for use in a water spraying and defogging cooling tower, and effectively avoids the problem of gas-liquid entrainment by diverting gas and liquid.

[0007] In order to achieve the above-mentioned objectives, on the one hand, the present invention provides a water-sprinkling and mist-eliminating filling unit, comprising a plurality of main filling sheets arranged in a stack, and forming a plurality of fluid channels distributed along the stacking direction and respectively located between adjacent main filling sheets, each of the fluid channels respectively having a water inlet and an air outlet located at the upper end and an air inlet located at the lower end, each of the main filling sheets is formed as a sawtooth area including a plurality of sawtooth units at a portion adjacent to the air inlet, adjacent main filling sheets are spaced from each other at the bottom tip of the sawtooth unit to form a downwardly opening water outlet for discharging spray water, and adjacent main filling sheets are spaced from each other at at least one side of the sawtooth unit to form the air inlet for introducing cooling air.

[0008] Preferably, the two side edges of each sawtooth unit extend obliquely relative to the vertical direction, so that the sawtooth unit is formed into a cone shape that tapers downward, and adjacent main filling sheets are spaced apart from each other at the two side edges of the sawtooth unit.

[0009] Preferably, the maximum width of the sawtooth unit is not greater than 500 mm, preferably not greater than 250 mm.

[0010] Preferably, it further comprises a plurality of water collecting grooves disposed below the main filling sheet, each of the water collecting grooves being arranged opposite to the water outlet so as to receive the spray water discharged from the water outlet.

[0011] Preferably, a supporting drainage strip is provided in the water collecting trough, the main filling sheet is installed so that the bottom tip of the sawtooth unit is supported on the supporting drainage strip, and a drainage outlet is formed at the bottom of the water collecting trough.

[0012] Preferably, the bottom tip of the sawtooth unit is formed into a rectangular shape, and the water collecting groove has groove side walls extending upward to both sides of the bottom tip.

[0013] Preferably, the main filling sheet has an evaporation heat exchange zone located on the upper side of the serrated zone and a guide zone located on the upper side of the evaporation heat exchange zone, and the top edges of adjacent main filling sheets are sealed together within a partial width section of the main filling sheet to form sealing surfaces that are alternately distributed with the water inlet and air outlet along the stacking direction.

[0014] Preferably, the guide area is formed in an isosceles triangle shape which tapers upward, and the waists of adjacent main filling sheets located on both sides of the top corners of the guide area are alternately sealed and connected.

[0015] Preferably, the guide area is formed to have a V-shaped recess in the middle portion of the top edge, and adjacent main filling sheets are sealed and connected at the V-shaped recess at intervals.

[0016] Preferably, the guide area is formed with a plurality of isosceles triangle-shaped sub-guide areas that are distributed along the width direction of the main filling sheet and taper upward, and the waists of adjacent main filling sheets located on both sides of the top corners of the sub-guide areas are alternately sealed and connected.

[0017] Preferably, a guide spacer for guiding the spray water to be distributed over the entire width area of ​​the main filling sheet is provided between the guide areas of adjacent main filling sheets.

[0018] The second aspect of the present invention provides a cooling tower, comprising a tower body and a water collector, a water distribution system and a water sprinkling and defogging filling layer arranged from top to bottom in the tower body, the water sprinkling and defogging filling layer comprising a plurality of groups of the above-mentioned water sprinkling and defogging filling units connected to each other on the sides, and the tower body is formed with a cooling tower air inlet located on the lower side of the water sprinkling and defogging filling layer.

[0019] Preferably, the guide area is formed in the shape of an isosceles triangle that tapers upward, and the waists of adjacent main filling sheets located on both sides of the top corners of the guide area are alternately sealed and connected, and the tower body is also provided with a water-blocking plate that abuts against the top corners of the guide area. The water distribution system includes a water distribution main pipe, water distribution branch pipes respectively connected to the water distribution main pipe, and a nozzle installed at the free end of the water distribution branch pipe and located in the space between adjacent water-blocking plates.

[0020] Preferably, the tower body is provided with a damper located above the nozzle and capable of switching between an open position that connects the space between adjacent baffles with the space above and a closed position that separates the space between adjacent baffles from the space above.

[0021] Preferably, the guide area is formed with a V-shaped recess in the middle part of the top edge, and adjacent main filling sheets are sealed and connected in the V-shaped recess at intervals. The water distribution system includes a water distribution main pipe, a high-level water distribution branch pipe and a low-level water distribution branch pipe respectively connected to the water distribution main pipe, and nozzles installed at the free ends of the high-level water distribution branch pipe and the low-level water distribution branch pipe, wherein the water spraying area of ​​the nozzle installed at the free end of the low-level water distribution branch pipe is located in the V-shaped recess.

[0022] Through the above technical scheme, the water-sprinkling and defogging filling unit of the present invention is formed with a sawtooth area including a plurality of sawtooth units at the part of the main filling piece adjacent to the air inlet, so that it is convenient to stop the cooling wind from entering the water-sprinkling and defogging filling unit from the bottom tip of the sawtooth unit, and a water outlet only for discharging spray water is formed by the bottom tip, and the cooling wind mainly enters the fluid channel in the water-sprinkling and defogging filling unit through the air inlet formed at the side of the sawtooth unit. The discharged spray water and the introduced cooling air have different flow paths in the lower part of the water-sprinkling and defogging filling layer, which can effectively avoid the problem of gas-liquid entrainment and can also omit the lower partition plate and other structures to reduce costs.

[0023] In addition, compared with the prior art, the water spraying and mist elimination packing unit and cooling tower of the preferred embodiment of the present invention can have the following beneficial effects:

[0024] 1. The main filling pieces in the water-spraying and defogging filling module unit of the present invention can be used for both water-spraying cooling and partition heat exchange, without the need for intermediate partitions. Under defogging conditions, all the main filling pieces inside can be used for heat exchange, and the heat exchange area is doubled compared to that of ordinary water-spraying and defogging fillings, and the water-saving and defogging capabilities are stronger.

[0025] 2. The water-spraying and mist-eliminating packing unit of the present invention directly forms a fluid channel between the main packing sheets without any intermediate spacers, resulting in smaller resistance.

[0026] 3. The unique sawtooth fluid concentrator structure and working mechanism of the present invention allow cooling air to enter through the sawtooth area at the bottom of the water-spraying and mist-eliminating filler module unit, which can directly replace ordinary water-spraying fillers. There is no need to design dense partitions at the bottom, which is very novel and practical, low-cost, and easy to modify and maintain.

[0027] 4. The cooling tower of the preferred embodiment of the present invention can not only operate in the water spraying mode and the mist elimination mode, but also realize closed cooling operation, with a water saving rate of nearly 100%.

[0028] 6. In the cooling tower of the preferred embodiment of the present invention, no water baffle is required on the upper part of the water spraying and mist dispelling filler layer, and the modification and implementation is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of the main filling piece of the water-spraying and mist-eliminating filling unit according to the first preferred embodiment of the present invention;

[0030] Figure 2 Is Figure 1 A three-dimensional diagram of a water-spraying and mist-eliminating packing unit composed of main packing sheets;

[0031] Figure 3 Observed from another perspective Figure 2 A three-dimensional diagram of the water spraying and mist dispelling packing unit;

[0032] Figure 4 It is a schematic diagram of the main structure of the main filling piece of the water-spraying and mist-eliminating filling unit according to the second preferred embodiment of the present invention;

[0033] Figure 5 Is Figure 4 A three-dimensional diagram of a water-spraying and mist-eliminating packing unit composed of main packing sheets;

[0034] Figure 6 Observed from another perspective Figure 5 A three-dimensional diagram of the water spraying and mist dispelling packing unit;

[0035] Figure 7 From another perspective Figure 5 A three-dimensional diagram of the water spraying and mist dispelling packing unit;

[0036] Figure 8 It is a schematic diagram of the flow path of the fluid in the sawtooth-shaped converging part of the water-spraying and mist-eliminating packing unit of the present invention and a force analysis diagram;

[0037] Fig. 9 is a three-dimensional diagram of a water-spraying and mist-eliminating packing unit according to a third preferred embodiment of the present invention;

[0038] Fig.10is a three-dimensional diagram of a water collecting tank in a water spraying and mist eliminating packing unit according to a preferred embodiment of the present invention;

[0039] Fig.11 It is a three-dimensional diagram of the water-spraying and mist-eliminating packing unit of the first preferred embodiment described above when a water collecting tank is additionally provided;

[0040] Fig.12 It is a three-dimensional diagram of the water-spraying and mist-eliminating packing unit of the second preferred embodiment described above when a water collecting tank is additionally provided;

[0041] Fig.13 It is a schematic diagram of a cooling tower provided with the water spraying and mist dispelling packing unit of the first preferred embodiment, wherein the cooling tower operates in an open cooling condition;

[0042] Fig.14 yes Fig.13 Schematic diagram of the cooling tower in operation under mist elimination conditions;

[0043] Fig.15 yes Fig.13 The schematic diagram of the cooling tower in the closed cooling condition;

[0044] Fig.16 It is a schematic diagram of a cooling tower provided with the water spraying and mist dispelling packing unit of the second preferred embodiment, wherein the cooling tower operates in a water spraying cooling condition;

[0045] Fig.17 yes Fig.16 Schematic diagram of the cooling tower in operation under mist elimination conditions;

[0046] Fig.18 yes Fig.16 The relative position relationship diagram of the low-level sprinkler head and the water spraying and mist elimination filling unit in the cooling tower shown;

[0047] Fig.19 is a three-dimensional diagram of a water-spraying and mist-eliminating packing unit according to a fourth preferred embodiment of the present invention;

[0048] Fig. 20 yes Fig.19 A partial enlarged view of the flow guide area of ​​the middle water spray mist elimination packing unit;

[0049] Fig.21 yes Fig.19 A partial enlarged view of the sawtooth area of ​​the middle water spray mist elimination packing unit;

[0050] Fig. 22 yes Fig.19 An enlarged view of the guide spacer of the middle water spray mist elimination packing unit;

[0051] Fig.23is a three-dimensional diagram of a water-spraying and mist-eliminating packing unit according to a fifth preferred embodiment of the present invention;

[0052] Fig.24 yes Fig.23 A partial enlarged view of the guide area of ​​the middle water-spraying mist-eliminating filler unit.

[0053] Description of Reference Numerals

[0054] 1001-main filler sheet; 1002-flow guide area; 1003-evaporation heat exchange area; 1004-serrated area; 1005-serrated unit; 1006-bevel edge; 1007-vertical edge;

[0055] 1101-water spraying and mist elimination packing unit; 1102-upper flow guide; 1103-serrated flow concentrator; 1104-vertical sealing surface; 1105-water inlet and air outlet; 1106-oblique sealing surface; 1107-serrated concentrator; 1108-air inlet; 1109-water outlet;

[0056] 2001-main filler sheet; 2002-serrated area; 2003-horizontal edge; 2004-V-shaped concave portion; 2005-vertical edge; 2006-evaporation heat exchange area; 2007-serrated unit; 2008-rectangular converging port;

[0057] 2101-water spraying and mist elimination packing unit; 2102-V-shaped sealing surface; 2103-V-shaped channel; 2104-V-shaped diversion and water spraying area; 2105-vertical sealing surface; 2106-serrated flow gathering part; 2107-water inlet and outlet; 2108-air inlet; 2109-water outlet;

[0058] 3001-sawtooth unit; 3002-cold air; 3003-liquid flow; 3004-blowing force; 3005-gravity; 3006-combined force;

[0059] 4001-water outlet; 4002-air inlet; 4003-oblique sealing surface;

[0060] 5004-water collecting trough; 5001-side wall of trough; 5002-supporting drainage strip; 5003-drainage outlet;

[0061] 6001-sawtooth unit; 6002-water collecting tank;

[0062] 7001-cooling tower air inlet; 7002-nozzle; 7003-water distribution branch pipe; 7004-damper; 7005-water distribution main pipe; 7006-fan; 7007-wind tube; 7008-water collector; 7009-water baffle; 7010-V-shaped space; 7011-water spraying and mist elimination filling layer;

[0063] 8001-cooling tower air inlet; 8002-low-level water distribution branch pipe; 8003-low-level water distribution main pipe; 8004-high-level water distribution main pipe; 8005-water collector; 8006-wind tube; 8007-fan; 8008-high-level water distribution branch pipe; 8009-high-level nozzle; 8010-low-level nozzle; 8011-water spraying and mist elimination filling layer;

[0064] 9001-water spraying and mist elimination packing unit; 9002-water inlet and air outlet; 9003-flow diversion area; 9004-oblique wave; 9005-vertical sealing surface; 9006-serrated area; 9007-flow diversion spacer; 9010-oblique sealing surface; 9011-air inlet; 9012-water outlet; 9013-flow diversion groove; 9014-internal flow diversion part; 9015-inlet flow diversion part;

[0065] 9101-water spraying and mist elimination packing unit; 9102-V-shaped channel; 9103-V-shaped flow guide area and water spraying area; 9104-oblique wave; 9105-serrated area; 9106-V-shaped sealing surface. DETAILED DESCRIPTION

[0066] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0067] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top", "bottom", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "placed", "connected", "connected", "installed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Figures 1 to 24A water spraying and mist dispelling packing unit of various different embodiments and a cooling tower provided with the water spraying and mist dispelling packing unit are provided. The water spraying and mist dispelling packing unit includes a plurality of main packing sheets arranged in a stacked manner, and is provided with a plurality of fluid channels distributed along the stacking direction and respectively located between adjacent main packing sheets, each of the fluid channels respectively having a water inlet and air outlet located at the upper end and an air inlet located at the lower end, each of the main packing sheets is respectively formed into a sawtooth area including a plurality of sawtooth units at a portion adjacent to the air inlet, and adjacent main packing sheets are respectively spaced from each other at the bottom tip and at least one side of the sawtooth unit, so that a water outlet for discharging spray water that opens downward is formed by the bottom tip, and the air inlet is formed at the side.

[0070] Therefore, the water sprinkling and defogging filling unit of the present invention is convenient for cooling air to enter the water sprinkling and defogging filling unit from the bottom tip of the sawtooth unit through the water collecting groove as described later, and the water outlet only for discharging spray water is formed by the bottom tip, and the cooling air mainly enters the fluid channel in the water sprinkling and defogging filling unit through the air inlet formed at the side of the sawtooth unit, so that the discharged spray water and the introduced cooling air have different flow paths in the lower part of the water sprinkling and defogging filling layer, which can effectively avoid the problem of gas-liquid entrainment and can also omit the lower partition plate and other structures to reduce costs.

[0071] The cooling tower provided by the present invention includes a tower body and a water collector, a water distribution system and a water spraying and defogging filling layer arranged from top to bottom in the tower body, the water spraying and defogging filling layer includes a plurality of groups of the above-mentioned water spraying and defogging filling units connected to each other at the side, and the tower body is formed with a cooling tower air inlet located at the lower side of the water spraying and defogging filling layer. The cooling tower can be operated under various working conditions according to actual needs, and there is no need to set dense partitions at the bottom of the water spraying and defogging filling layer. It has high practicality and is easy to modify and maintain. In a preferred embodiment, the cooling tower of the present invention can realize closed cooling operation, and the water saving rate is close to 100%, or the water baffle plate on the upper part of the water spraying and defogging filling layer can be omitted, and the modification and implementation are simpler.

[0072] The following describes various different embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that these embodiments are only exemplary, and the technical features in different embodiments can be used interchangeably without violating the technical principles thereof to form other more embodiments falling within the scope of the present invention.

[0073] Embodiment 1:

[0074] This embodiment provides a preferred structure of a water-spraying and mist-eliminating filling unit.

[0075] like Figures 1 to 3As shown, the water-spraying and mist-eliminating packing unit 1101 according to the first preferred embodiment of the present invention has a plurality of main packing sheets 1001, each of which is provided with a guide area 1002 at the top, a sawtooth area 1004 at the bottom, and a rectangular evaporation heat exchange area 1003 in the middle. The sawtooth area 1004 at the bottom of the main packing sheet 1001 is composed of a plurality of flat-bottomed sawtooth units 1005, the top of the sawtooth unit 1005 is an inverted trapezoid with the short side at the bottom, and the bottom is a rectangular converging port, and the short side of the bottom of the inverted trapezoid is connected to the rectangular converging port.

[0076] The water-sprinkling and defogging packing unit 1101 is composed of a plurality of main packing sheets 1001 alternately stacked, and fluid channels are formed between adjacent main packing sheets 1001, which are referred to herein as the first flow path and the second flow path. An upper flow guide 1102 is formed on the upper part of the water-sprinkling and defogging packing module 1101: along the stacking direction of the main packing sheets, in the vertical direction of the water-sprinkling and defogging packing module 1101, the upper flow guide 1102 is formed by alternately stacking the flow guide areas 1001 of the main packing sheets 1001. A serrated flow gathering part 1103 is formed on the lower part of the water-sprinkling and defogging packing module 1101: along the stacking direction of the main packing sheets, in the vertical direction of the water-sprinkling and defogging packing module 1101, the lower serrated flow gathering part 1103 is formed by alternately stacking the serrated areas 1004 at the lower parts of the main packing sheets. The sawtooth-shaped concentrator 1103 is composed of a plurality of sawtooth-shaped concentrators 1107, which are composed of a plurality of stacked sawtooth units 1005 of main filler sheets. At the bottom of the sawtooth-shaped concentrator 1107, a rectangular concentrator at the bottom of the sawtooth unit 1005 at the bottom of the main filler sheet forms a water outlet 1109, and all the water outlets 1109 open downward and have the same opening direction. The number of the sawtooth-shaped concentrators 1107 is twice or more the number of the upper guide 1102.

[0077] The upper guide part 1102 is mainly responsible for controllably directing the circulating hot water sprayed from the top of the water spraying and defogging packing unit 1101 into the first and second flow paths. When there is water in the first flow path and no water in the second flow path, the external cold air enters the first flow path and the second flow path respectively under the drive of the fan. The circulating hot water in the first flow path contacts the cold air in the evaporative cooling zone 1003, evaporates and dissipates heat, and the circulating hot water is cooled, and the cold air in the first flow path becomes saturated hot and humid air. The cold air flowing upward from the sawtooth-shaped converging part 1103 below the water spraying and defogging packing unit 1101 into the second flow path exchanges heat with the circulating hot water in the first flow path through the main packing sheet partition wall when passing through the evaporative cooling zone 1003, becomes dry hot air, and flows upward from the upper guide part 1102. The saturated moist hot air and dry hot air flowing upward from the upper guide part 1102 of the water spraying and defogging packing unit 1101 are mixed to become unsaturated air and discharged outside the tower, thereby achieving the purpose of water saving and defogging. During the whole process, part of the heat of the circulating hot water is used to heat the cold air through the partition heat exchange, and this part of the heat is not lost through the evaporation heat exchange of water, thereby achieving the purpose of water saving. When there is water in both the first and second flow paths, the water spraying and defogging packing unit is equivalent to an ordinary water spraying packing.

[0078] The guide area 1002 provided on the upper part of the main filling sheet 1001 may be a triangular guide area 1002 with the vertex facing upward, and the guide areas 1008 of the alternately stacked main filling sheets are stacked on each other to form a triangular upper guide part 1102. An oblique sealing surface 1106 is provided between the oblique sides on the same side of the guide areas 1002 of the alternately stacked main filling sheets in the water-spraying and fog-eliminating filling unit 1101, and an opening is provided between the oblique sides on the other side of the guide areas 1002 of the alternately stacked main filling sheets to form a water inlet and air outlet 1105. Along the stacking direction of the main filling sheets, the oblique sealing surfaces 1106 and the water inlet and air outlet 1105 are alternately distributed on the oblique sides of the upper guide part 1102.

[0079] When the circulating hot water sprayed from the top of the water spraying and mist eliminating filling unit falls on the inclined surface on one side of the upper guide part 1102, since the inclined surface on one side of the upper guide part connects the first and second flow paths and is blocked, the circulating hot water can only enter the connected flow path from the unblocked opening. When the control does not allow water to be sprayed on one side of the inclined surface on both sides of the upper guide part and not on the other side, it can be achieved that there is water or no water in the first and second flow paths.

[0080] A guide spacer may be provided between the guide areas of the main filler sheets, and a guide groove is provided on the guide spacer, and the guide groove guides water evenly to the evaporation heat exchange area of ​​the main filler sheets.

[0081] The sawtooth-shaped concentrator 1107 is formed by alternately stacking sawtooth units 1005 at the bottom of the main filler sheets. Along the stacking direction of the main filler sheets, an opening structure is formed between the oblique edges 1006 on both sides of the sawtooth units 1005 at the bottom of the main filler sheets, forming an air inlet 1108. Along the stacking direction of the main filler sheets, the vertical edges 1007 of the side portions of the alternately stacked main filler sheets in the water-spraying and mist-eliminating filler unit are connected with each other at intervals to form a vertical sealing surface 1104.

[0082] When the circulating water flowing downward in the first flow path or the second flow path reaches and enters the sawtooth convergence part 1103, and passes through the inverted trapezoidal area of ​​the sawtooth unit 1005 in the sawtooth area 1004 at the bottom of the main filler sheet, the water flow is affected by three forces at this time. The first is the gravity of the water flow itself and it flows vertically downward. The second is the oblique upward blowing force of the cold wind flowing in obliquely upward from the bottom of the sawtooth convergence part. The third is the tension directed toward the surface of the filler sheet caused by the surface tension of the water itself, wherein the combined force of gravity and blowing force points to the rectangular convergence port of the flat-bottom convergence area, i.e., the water outlet 1109, and flows close to the main filler sheet under the action of the tension. In fact, since air also has viscosity, the air flowing into the first or second flow path is not evenly distributed in the thickness direction of the flow path. The wind speed is high in the middle of the flow path, and the wind speed is low near the main filling sheet. Due to the difference in air flow speed in the thickness direction of the flow path, pressure directed to the surface of the filling sheet will also be generated on the water flow. Therefore, the water flow obliquely flows along the inverted trapezoidal area of ​​the flat-bottomed flow zone in the serrated area at the bottom of the main filling sheet and enters the rectangular flow port at the bottom of the flat-bottomed flow zone, and finally leaves the water sprinkling and demisting filling unit from the water outlet 1109 of the serrated flow body.

[0083] The water outlet 1109 can abut against the water collecting trough with segmented water outlet, the side walls of the water collecting trough are higher than the water outlet 1109, and a supporting drainage strip can be provided at the bottom of the water collecting trough. The water collecting trough can realize intermittent drainage by providing intermittent drainage outlets along the length direction.

[0084] Embodiment 2:

[0085] This embodiment provides a second preferred structure of the water-spraying and mist-eliminating packing unit.

[0086] like Figures 4 to 7 As shown, according to the second preferred embodiment of the present invention, the water-spraying and mist-eliminating packing unit comprises a plurality of main packing sheets 2001, each of which is provided with a guide area at the top, a sawtooth area 2002 at the bottom, and a rectangular evaporation heat exchange area 2006 in the middle. The sawtooth area 2002 at the bottom of the main packing sheet 2001 is composed of a plurality of sawtooth units 2007, the upper part of the sawtooth unit 2007 is an inverted trapezoid with the short side at the bottom, and the bottom is a rectangular converging port 2008, and the short side of the bottom of the inverted trapezoid is connected to the rectangular converging port 2008.

[0087] The water-sprinkling and mist-eliminating packing unit 2101 is composed of a plurality of main packing sheets 2001 alternately stacked, and fluid channels are formed between adjacent main packing sheets 2001, which are referred to as the first flow path and the second flow path. An upper flow guide is formed at the upper part of the water-sprinkling and mist-eliminating packing unit 2101; a sawtooth-shaped flow-gathering portion 2106 is formed at the lower part of the water-sprinkling and mist-eliminating packing unit 2101: along the stacking direction of the main packing sheets, in the vertical direction of the water-sprinkling and mist-eliminating packing unit 2101, the sawtooth areas at the lower parts of the plurality of main packing sheets are alternately stacked to form the sawtooth-shaped flow-gathering portion 2106. The sawtooth-shaped flow-gathering portion 2106 is composed of a plurality of sawtooth-shaped convergent bodies, which are composed of sawtooth units 2007 at the lower parts of the sawtooth areas of the main packing sheets 2001. A rectangular flow-gathering port 2008 is provided at the lower part of the sawtooth unit 2007, and a plurality of rectangular flow-gathering ports 2008 form a water outlet 2109. All water outlets 2109 are open downwards and in the same opening direction, and air inlets 2108 are formed on both sides of the water outlets 2109 respectively; the number of the sawtooth-shaped concentrators is twice or more the number of the upper guide parts.

[0088] The guide area arranged on the upper part of the main packing sheet 2001 has a V-shaped concave portion 2004 located in the middle, and the V-shaped concave portion 2004 has horizontal edges 2003 on both sides. The V-shaped guide areas of the alternately stacked main packing sheets are stacked on each other to form a V-shaped upper guide part on the upper part of the water-spraying and fog-eliminating packing unit. The V-shaped edge part of the V-shaped guide area of ​​the alternately stacked main packing sheets 2001 in the water-spraying and fog-eliminating packing unit 2101, a V-shaped sealing surface 2102 for sealing is arranged between the oblique edges on both sides of the V-shaped edge, and the flat edges on both sides of the V-shaped edge of the V-shaped guide area arranged on the upper part of the main packing sheet 2001 form an opening structure, forming a water inlet and air outlet 2107. Along the stacking direction of the main packing sheets, the V-shaped sealing surfaces 2102 are distributed every other place.

[0089] The V-shaped guide part is formed by alternately stacking the upper V-shaped edges of the main filler sheet 2001 and forming a V-shaped channel 2103 along the stacking direction. The V-shaped channel 2103 is flanked by the flat edges on both sides of the V-shaped edges of the main filler sheet to form a fully open V-shaped guide water spraying area 2104. When the circulating hot water sprayed from the top of the water spraying and mist eliminating filler unit falls into the V-shaped guide water spraying area 2104 of the V-shaped guide part, it can enter the first flow path and the second flow path at the same time; when the circulating hot water sprayed from the top only falls into the V-shaped channel 2103, due to the V-shaped sealing surface 2102 stacked at intervals, the circulating hot water can only enter the first flow path or the second flow path, thereby realizing that the first and second flow paths are alternately filled with water or not filled with water.

[0090] The rectangular evaporation heat exchange area in the middle of the main filler sheet has vertical edges 2005 on both sides. The vertical edges 2005 of adjacent main filler sheets are connected with each other at a seal to form a vertical sealing surface 2105.

[0091] Embodiment 3:

[0092] This embodiment provides a schematic diagram of the mechanism of the flat-bottomed flow-concentrating zone.

[0093] like Figure 8 When the circulating water flowing downward in the first flow path or the second flow path reaches and enters the sawtooth-shaped converging part, and passes through the inverted trapezoidal area of ​​the sawtooth unit 3001 in the sawtooth area at the bottom of the main filler sheet, the liquid flow 3003 is affected by three forces at this time. The first is the gravity 3005 of the water flow itself and it is vertically downward. The second is the oblique upward blowing force 3004 of the cold wind 3002 flowing in obliquely upward from the bottom of the sawtooth-shaped converging part. The third is the tension directed to the surface of the filler sheet generated by the surface tension of the water itself, wherein the combined force 3006 of the gravity 3005 and the blowing force 3004 is directed to the rectangular converging port of the sawtooth unit 3001, and flows close to the main filler under the action of the tension. In fact, since air also has viscosity, the air flowing into the first or second flow path is not evenly distributed in the thickness direction of the flow path. The wind speed is high in the middle of the flow path, and low near the filler sheet. Due to the difference in air flow speed in the thickness direction of the flow path, the water flow will also generate pressure directed to the surface of the filler sheet. Therefore, the water flow flows obliquely along the inverted trapezoidal area of ​​the flat-bottomed flow-gathering area in the lower sawtooth area of ​​the main filler sheet and enters the rectangular flow-gathering port at the bottom of the sawtooth unit 3001, and finally leaves the water-spraying and defogging filler unit from the outlet of the sawtooth flow-gathering body. In order to ensure the gas-liquid diversion effect, the maximum width of each sawtooth unit 3001 is not more than 500mm, preferably not more than 250mm.

[0094] Embodiment 4:

[0095] This embodiment provides a modified implementation of the water-spraying and mist-eliminating filling unit.

[0096] like Fig. 9 The sawtooth concentrator is formed by alternately stacking sawtooth units at the bottom of the main filling sheet. Along the stacking direction of the main filling sheet, a closed concentrator oblique sealing surface 4003 is set between the same side bevels of the flat bottom concentrators at the bottom of the main filling sheet alternately stacked in the water spraying and mist eliminating filling unit, and an opening structure is formed between the other side bevels of the flat bottom concentrators at the bottom of the main filling sheet as an air inlet 4002. The water outlet 4001 is formed by the bottom rectangular concentrator opening of the sawtooth area at the bottom of the main filling sheet. All the water outlets 4001 are downwardly open and have the same opening direction.

[0097] Embodiment 5:

[0098] This embodiment provides a preferred structure of a water collection trough with segmented water discharge.

[0099] like Fig.10The lower outlet of the sawtooth condenser can be connected to the water collecting groove 5004 with segmented water discharge. The groove sidewalls 5001 on both sides of the water collecting groove 5004 are higher than the water outlet, and a supporting drainage strip 5002 is provided at the bottom. Along the length of the water groove, the water collecting groove 5004 is provided with intermittent drainage outlets 5003, which can discharge water intermittently.

[0100] Embodiment 6:

[0101] This embodiment provides a structure in which a water collecting tank of embodiment 5 is added to the water sprinkling and mist eliminating filling unit in embodiments 1 and 2.

[0102] like Fig.11 and Fig.12 , are schematic diagrams of the structures of the water spraying and mist dispelling packing unit abutting against the water collecting tank in Example 1 and Example 2, respectively. The sawtooth unit 6001 of the sawtooth flow converging portion below the water spraying and mist dispelling packing unit extends into the water collecting tank 6002. The main packing sheet of the water spraying and mist dispelling packing unit can be stably supported without affecting the water discharge.

[0103] Embodiment 7:

[0104] This embodiment provides a preferred implementation of a mist elimination cooling tower.

[0105] like Figures 13 to 15 The demisting cooling tower includes a tower body, a cooling tower air inlet 7001 is arranged at the lower part of the tower body, a water collecting trough is arranged above the cooling tower air inlet 7001, a water sprinkling demisting filler unit 1101 with a triangular upper guide portion is abutted and installed on the upper part of the water collecting trough, the water sprinkling demisting filler units abut each other to form a water sprinkling demisting filler layer 7011 on the horizontal plane, a water baffle 7009 is arranged above the water baffle layer 7011, a partitioned water distribution system with main pipes crossing the water baffles 7009 is arranged between the water baffles 7009, a deflectable damper 7004 for closing or opening the channel between the connected water baffles is arranged above the damper, a water collector 7008 is arranged above the damper, and a fan 7006 and a wind tube 7007 are arranged above the water collector.

[0106] The zoned water distribution system has multiple water distribution main pipes 7005, each of which is connected to a certain number of water distribution branch pipes 7003. The water distribution branch pipes on different water distribution main pipes 7005 are arranged at intervals, and the length direction of the branch pipes is the same as the alternating stacking direction of the main filling sheets in the water sprinkling and defogging packing unit; multiple circulating water nozzles 7002 are arranged at the lower part of the water distribution branch pipes, and the spraying direction of the nozzles is toward the V-shaped space 7010 formed between the triangular guide parts at the top of two adjacent water sprinkling and defogging packing modules; the bottom of the water baffle 7009 is in contact with the top corner of the triangular guide part of the water sprinkling and defogging packing unit.

[0107] Under the action of the fan 7006 at the top of the tower body, the ambient cold air enters the tower through the cooling tower air inlet 7001 at the bottom of the tower and flows upward. When the ambient cold air enters the tower and reaches the bottom of the water spraying and mist dispelling packing unit, it passes over the water collecting trough and enters the sawtooth-shaped flow gathering part, and enters the first and second flow paths of the water spraying and mist dispelling packing from the oblique side air inlet of the sawtooth-shaped flow gathering part. At the same time, the circulating hot water outside the tower is sprayed from the nozzle 7002 of the water distribution branch pipe 7003 to the upper guide part of the water spraying and mist dispelling packing through the water distribution main pipe 7005 of the partitioned water distribution, and enters the first and second flow paths of the water spraying and mist dispelling packing from the water inlet and outlet of the guide part of the upper guide part. In the evaporative cooling area of ​​the first and second main packing sheets, the downward circulating hot water contacts the upward dry cold air in countercurrent, and the circulating water is evaporated and cooled.

[0108] Fig.14 The demisting cooling tower is shown to be operating in the demisting condition. The water baffle 7009 divides the part above the water spraying demisting packing layer into a plurality of V-shaped spaces 7010, and a rotatable damper 7004 is provided at the upper part of the space between the water baffles 7009, and the damper 7004 is rotated to a vertical state.

[0109] Some water distribution mains of the zoned water distribution system have water, while the other water distribution mains do not. The water distribution branch pipes connected to the water distribution mains with water spray circulating hot water at intervals through nozzles to the V-shaped space 7010 formed between the triangular guide parts at the top of two adjacent water sprinkling and defogging packing units, and further fall to the water and air inlet of the guide part on the side of the triangular guide part at the top of the water sprinkling and defogging packing unit, and enter the flow path connected to the water and air inlet of the guide part, while no water is sprayed on the other side of the triangular guide part at the top of the water sprinkling and defogging packing unit, and no water enters the corresponding flow path from the water inlet and air outlet of the guide part on the other side of the triangular guide part.

[0110] In the flow path with water, on the one hand, cold air enters the evaporation heat exchange area from the bottom and flows upward, on the other hand, circulating hot water enters the evaporation heat exchange area from the guide part and flows downward. The two fluids contact each other in countercurrent, and the circulating hot water evaporates and exchanges heat to become circulating cold water, and the cold air becomes saturated humid hot air. Finally, the saturated humid hot air leaves the defogging filler through the water inlet and outlet of the guide part. After the circulating cold water is concentrated by the sawtooth converging part, it enters the water collecting trough through the outlet of the sawtooth converging body, and is intermittently discharged to the water collecting tank at the bottom of the tower through the intermittent drainage outlet of the water collecting trough.

[0111] The water discharged from the intermittent drain outlet of the water collection trough falls into the lower water collection pool in the tower in a columnar shape, forming a circulating cold water column flow area. At the same time, cold air enters from the air inlet of the cooling tower, passes through the circulating cold water column flow area and enters the water spraying and mist elimination filler.

[0112] In the waterless flow path, cold air enters the evaporation heat exchange area from the bottom and flows upward, passes through the evaporation heat exchange area of ​​the main filler sheet, and exchanges heat with the circulating hot water partition on the other side of the main filler sheet. The dry cold air becomes dry hot air and flows upward from the water inlet and outlet of the guide part connected to this flow path.

[0113] The saturated moist hot air and dry hot air discharged from the two sides of the triangular guide part on the upper part of the water-spraying mist-eliminating filler are mixed with heat to become unsaturated air, pass through the vertically placed damper, and are discharged outside the tower through the fan and wind duct to achieve the purpose of mist elimination.

[0114] Fig.15 The demisting cooling tower is shown to be operating in a closed cooling mode. The water baffle 7009 divides the part above the water spraying demisting packing layer into a plurality of V-shaped spaces 7010. The rotatable dampers 7004 are arranged at the upper part of the space between the water baffles 7009. The dampers 7004 corresponding to the upper part of the V-shaped space for spraying hot water are horizontally closed to close the flow channel, and the dampers 7004 corresponding to the upper part of the V-shaped space for not spraying hot water are in a vertical state.

[0115] Some water distribution mains of the zoned water distribution system have water, while the rest of the water distribution mains do not. The water distribution branch pipes connected to the water distribution mains with water spray circulating hot water at intervals through nozzles into the V-shaped space formed between the triangular guide parts at the top of two adjacent water sprinkling and defogging packing units, and further fall to the water and air inlet of the guide part on the side of the triangular guide part at the top of the water sprinkling and defogging packing unit, and enter the flow path connected to the water and air inlet of the guide part, while no water is sprayed on the other side of the triangular guide part at the top of the water sprinkling and defogging packing unit, and no water enters the corresponding flow path from the water inlet and air outlet of the guide part on the other side of the triangular guide part.

[0116] In the flow path with water, because the damper corresponding to the V-shaped space on the upper part of the filler is closed horizontally, the cold air cannot flow, so no cold air enters the channel, and the circulating hot water enters the evaporation heat exchange area from the guide part and flows downward; in the flow path without water, the cold air enters the evaporation heat exchange area from the bottom and flows upward, passes through the evaporation heat exchange area of ​​the main filler sheet, and exchanges heat with the circulating hot water partition on the other side of the main filler sheet, and the dry cold air becomes dry hot air, which flows upward from the water inlet and outlet of the guide part connected to this flow path; the circulating hot water in the water channel becomes circulating cold water, and the circulating cold water enters the water collecting trough through the outlet of the sawtooth concentrator after being concentrated by the sawtooth concentrator, and is intermittently discharged to the water collecting tank at the bottom of the tower through the intermittent drainage outlet of the water collecting trough.

[0117] The water discharged from the intermittent drain outlet of the water collection trough falls into the lower water collection tank in the tower in a columnar shape, forming a circulating cold water column flow area. At the same time, cold air enters from the air inlet of the cooling tower, passes through the circulating cold water column flow area and enters the water spraying and demisting filler.

[0118] The dry hot air passes through the vertically placed dampers and is discharged outside the tower through the fan and air duct. The whole process saves water and eliminates mist.

[0119] Fig.13 The demisting cooling tower is shown to be operating in an open cooling mode. The water baffle 7009 divides the upper part of the water-spraying demisting packing layer into a plurality of V-shaped spaces 7010. A rotatable damper 7004 is arranged at the upper part of the space between the water baffles, and the damper is in a vertical state.

[0120] There is water in all the water distribution mains 7004 of the zoned water distribution system, and the water distribution branch pipes connected to the water distribution mains spray the circulating hot water to the V-shaped space 7010 formed between the triangular guide parts at the top of all two adjacent water sprinkling and defogging packing units through the nozzles 7002, and further fall to the water and air inlet of the guide part on the side of the triangular guide part at the top of the water sprinkling and defogging packing unit, and enter the flow path connected to the water and air inlet of the guide part.

[0121] In the first and second flow paths, on the one hand, cold air enters the evaporation heat exchange area from the bottom and flows upward, and on the other hand, circulating hot water enters the evaporation heat exchange area from the guide part and flows downward. The two fluids contact each other in countercurrent, and the circulating hot water evaporates and exchanges heat to become circulating cold water, and the cold air becomes saturated humid hot air. Finally, the saturated humid hot air leaves the defogging filler through the water inlet and outlet of the guide part. After the circulating cold water is concentrated by the sawtooth converging part, it enters the water collecting trough through the outlet of the sawtooth converging body, and is intermittently discharged to the water collecting tank at the bottom of the tower through the intermittent drainage outlet of the water collecting trough.

[0122] The water discharged from the intermittent drain outlet of the water collection trough falls into the lower water collection tank in the tower in a columnar shape, forming a circulating cold water column flow area. At the same time, cold air enters from the air inlet of the cooling tower, passes through the circulating cold water column flow area and enters the water spraying and demisting filler.

[0123] Saturated air passes through vertically placed dampers and is discharged outside the tower through fans and air cylinders.

[0124] Embodiment 8:

[0125] This embodiment provides another preferred embodiment of a mist elimination cooling tower.

[0126] like Figures 16 to 18As shown, the demisting cooling tower includes a tower body, a cooling tower air inlet 8001 is arranged at the lower part of the tower body, a water demisting filler module 2101 with a V-shaped upper guide portion as mentioned above is arranged in the tower above the cooling tower air inlet 8001, the water demisting filler modules 2101 are abutted against each other to form a water demisting filler layer 8011 on the horizontal plane, a high and low water distribution system is arranged above the water demisting filler layer 8011, a water collector 8005 is arranged above the high and low water distribution system, and a fan 8007 and a wind tube 8006 are arranged above the water collector 8005. The high-low water distribution system has multiple water distribution main pipes, some of which are high-level water distribution main pipes 8004, and the other part of which are low-level water distribution main pipes 8003; the high-level water distribution main pipes 8004 are connected to high-level water distribution branch pipes 8008, and the high-level water distribution branch pipes 8008 are evenly arranged above the entire water sprinkling and defogging filling layer, and high-level sprinklers 8009 are provided at the lower part of the high-level water distribution branch pipes 8008, facing downward toward the water sprinkling and defogging filling layer; the low-level water distribution main pipes 8003 are connected to low-level water distribution branch pipes 8002, and the length direction of the low-level water distribution branch pipes 8002 is the same as the alternating stacking direction of the main filling sheets in the water sprinkling and defogging filling module; the lower part of the low-level water distribution branch pipes is provided with low-level sprinklers 8010, and the low-level sprinklers 8010 face and extend into the V-shaped channel of the V-shaped upper guide part.

[0127] like Fig.17 When the fog dispelling condition is in operation, the high-level water distribution main pipe 8004 is dry, and the low-level water distribution main pipe 8003 is filled with water. The low-level water distribution branch pipe 8002 connected to the low-level water distribution main pipe spreads the circulating hot water into the V-shaped channel of the upper V-shaped guide part of the water spraying fog dispelling through the low-level nozzle 8010. Because of the V-shaped sealing surfaces stacked at intervals in the V-shaped channel, the circulating hot water can only enter the unclosed flow path, thereby realizing the presence or absence of water in the adjacent flow paths.

[0128] In the flow path with water, on the one hand, cold air enters the evaporation heat exchange area from the bottom and flows upward, on the other hand, circulating hot water enters the evaporation heat exchange area from the guide part and flows downward. The two fluids contact each other in countercurrent, and the circulating hot water evaporates and exchanges heat to become circulating cold water, and the cold air becomes saturated humid hot air. Finally, the saturated humid hot air leaves the defogging filler through the water inlet and outlet of the guide part. After the circulating cold water is concentrated by the sawtooth converging part, it enters the water collecting trough through the outlet of the sawtooth converging body, and is intermittently discharged to the water collecting tank at the bottom of the tower through the intermittent drainage outlet of the water collecting trough.

[0129] The water discharged from the intermittent drain outlet of the water collecting trough falls into the lower water collecting pool in the tower in a columnar shape, forming a circulating cold water column flow area. At the same time, cold air enters from the cooling tower air inlet 8001, passes through the circulating cold water column flow area and enters the water spraying and mist elimination filler unit 2101.

[0130] In the waterless flow path, cold air enters the evaporation heat exchange area from the bottom and flows upward, passes through the evaporation heat exchange area of ​​the first and second main filling sheets, exchanges heat with the circulating hot water partition on the other side of the main filling sheets, and the dry cold air becomes dry hot air, which flows upward from the guide part connected to this flow path.

[0131] The saturated moist hot air and dry hot air discharged from the two sides of the triangular guide part on the upper part of the water-spraying mist-eliminating filler are mixed with heat to become unsaturated air, pass through the water collector, and are discharged outside the tower through the fan and wind duct to achieve the purpose of mist elimination.

[0132] like Fig.16 When the water spray cooling condition is in operation, there is water in the high-level water distribution main pipe 8004, and there is no water in the low-level water distribution main pipe 8003. The high-level water distribution branch pipe 8008 connected to the high-level water distribution main pipe 8004 spreads the circulating hot water to the entire area of ​​the upper V-shaped guide part of the water spray mist elimination through the high-level nozzle 8009. The sprayed circulating hot water can enter the first and second entire flow paths respectively through the V-shaped guide water spray area.

[0133] In the first and second flow paths, on the one hand, cold air enters the evaporative heat exchange area from the bottom and flows upward, and on the other hand, circulating hot water enters the evaporative heat exchange area from the guide part and flows downward. The two fluids contact each other in countercurrent, and the circulating hot water evaporates and exchanges heat to become circulating cold water, and the cold air becomes saturated humid hot air. Finally, the saturated humid hot air leaves the defogging filler through the water inlet and outlet of the guide part. After the circulating cold water is concentrated by the sawtooth converging part, it enters the water collecting trough through the outlet of the sawtooth converging body, and is intermittently discharged to the water collecting pool at the bottom of the tower through the intermittent drainage outlet.

[0134] The water discharged from the intermittent drain outlet of the water collection trough falls into the lower water collection tank in the tower in a columnar shape, forming a circulating cold water column flow area. At the same time, cold air enters from the air inlet of the cooling tower, passes through the circulating cold water column flow area and enters the water spraying and demisting filler.

[0135] Embodiment 9:

[0136] This embodiment provides another preferred implementation of a water-spraying and mist-eliminating filling unit.

[0137] like Figures 19 to 22As shown, the water-sprinkling and defogging packing unit 9001 is composed of the first and second main packing sheets alternately stacked, and the first and second main packing sheets form the first and second flow paths; at the upper part of the water-sprinkling and defogging packing unit, there is formed: when viewed from the stacking direction of the packing sheets, in the upright direction of the water-sprinkling and defogging packing unit, the upper guide part is formed by the guide areas 9003 at the upper parts of the first and second main packing sheets alternately stacked to form an upper guide part; at the lower part of the water-sprinkling and defogging packing unit, there is formed: when viewed from the stacking direction of the packing sheets, in the upright direction of the water-sprinkling and defogging packing unit, there is formed: when viewed from the stacking direction of the packing sheets, in the upright direction of the water-sprinkling and defogging packing unit, a sawtooth-shaped flow focusing part is formed by the sawtooth areas 9006 at the lower parts of the first and second main packing sheets alternately stacked to form a sawtooth-shaped flow focusing part; the sawtooth-shaped flow focusing part is composed of a plurality of sawtooth converging bodies, and the sawtooth converging body is composed of the flat-bottomed sawtooths at the sawtooth areas at the lower parts of the first and second main packing sheets. At the lower part of the sawtooth concentrator, a water outlet 9012 is formed by the bottom rectangular concentrator openings of the lower sawtooth areas of the first and second main filling sheets; all of the water outlets 9012 are open downward and have the same opening direction; the number of the sawtooth concentrators is twice or more the number of the upper guide parts.

[0138] The upper guide part mainly guides the circulating hot water sprayed from the top of the water spraying and defogging packing unit into the first and second flow paths in a controllable manner through the water inlet and outlet 9002. When there is water in the first flow path and no water in the second flow path, the outside cold air enters the first flow path and the second flow path respectively under the drive of the fan. The circulating hot water in the first flow path contacts the cold air in the evaporative cooling area of ​​the first and second main packing sheets, evaporates and dissipates heat, and the circulating hot water is cooled, and the cold air in the first flow path becomes saturated hot and humid air. The cold air flowing upward from the sawtooth-shaped converging part below the water spraying and defogging packing unit into the second flow path exchanges heat with the circulating hot water in the first flow path through the wall between the first and second main packing sheets when passing through the evaporative cooling area of ​​the first and second main packing sheets, becomes dry hot air, and flows upward from the upper guide area 9003. The saturated hot and humid air and dry hot air flowing upward from the upper guide area 9003 of the water spraying and defogging packing module are mixed to become unsaturated air and discharged outside the tower to achieve the purpose of water saving and defogging. During the whole process, part of the heat of the circulating hot water is transferred to the cold air through the partition wall heat exchange, and this part of the heat is not lost through the evaporation of water, which is equivalent to water saving. When there is water in both the first and second flow paths, the water spraying and defogging packing module is equivalent to an ordinary water spraying packing.

[0139] The sawtooth concentrator is formed by alternatingly stacking the flat-bottomed concentrators at the bottom of the first and second main filling sheets; when viewed from the stacking direction of the filling sheets, an inclined sealing surface 9010 for closing the concentrator is provided between the same-side oblique edges of the flat-bottomed concentrators at the bottom of the first and second main filling sheets alternately stacked in the water-sprinkling and mist-eliminating filling module, and an opening structure is formed between the other-side oblique edges of the flat-bottomed concentrators at the bottom of the first and second main filling sheets, which is an air inlet 9011.

[0140] A guide spacer 9007 is arranged between the triangular guide areas 9003 with the top angles pointing upwards of the first and second main filling sheets, and a guide spacer 9007 is arranged between the triangular guide areas with the top angles pointing upwards of the second and first main filling sheets. A guide groove 9013 is arranged on the internal guide portion 9014 of the guide spacer, and the guide groove guides water evenly to the evaporation heat exchange area of ​​the first and second main filling sheets. An inlet guide portion 9015 is arranged at the head of the guide spacer, and the thickness of the inlet guide portion 9015 is the sum of the widths of the first and second flow paths.

[0141] After water enters the first or second flow path from the water inlet and outlet of the guide part, it is evenly distributed to the evaporation heat exchange area of ​​the first and second main filler sheets of the filler width through the guide grooves 9013 on the guide spacer 9007.

[0142] The rectangular evaporation heat exchange area in the middle of the first and second main fillers has vertical sides on both sides. The rectangular evaporation heat exchange area in the middle of the first main filler is provided with an oblique wave 9004 inclined to the right, and the rectangular evaporation heat exchange area in the middle of the second main filler is provided with an oblique wave 9004 inclined to the left.

[0143] A vertical sealing surface 9005 for sealing is arranged between the vertical sides of the rectangular evaporation heat exchange area of ​​the first and second main filling sheets alternately stacked in the water-spraying and defogging filling unit, and an opening is arranged between the vertical sides of the rectangular evaporation heat exchange area of ​​the second and first main filling sheets alternately stacked in the water-spraying and defogging filling unit.

[0144] Embodiment 10:

[0145] This embodiment provides another preferred implementation of a water-spraying and mist-eliminating filling unit.

[0146] like Fig.23 and Fig.24 The water-sprinkling and mist-eliminating packing unit 9101 is composed of the first and second main packing sheets alternately stacked, and the first and second main packing sheets form the first and second flow paths. The upper part of the water-sprinkling and mist-eliminating packing unit is formed as follows: when viewed from the stacking direction of the packing sheets, in the vertical direction of the water-sprinkling and mist-eliminating packing unit, the upper guide area above the packing module is alternately stacked to form the upper guide area; the lower part of the packing module is formed as follows: when viewed from the stacking direction of the packing sheets, in the vertical direction of the water-sprinkling and mist-eliminating packing unit, the sawtooth areas 9105 at the lower parts of the first and second main packing sheets are alternately stacked to form a sawtooth-shaped flow converging part; the sawtooth-shaped flow converging part is composed of a plurality of sawtooth converging bodies, and the sawtooth converging bodies are composed of flat-bottomed sawtooths at the lower sawtooth areas of the first and second main packing sheets. The lower part of the sawtooth concentrator is formed by the bottom rectangular concentrator opening of the lower sawtooth area of ​​the first and second main filling sheets to form the water outlet of the sawtooth concentrator; the water outlets are all downwardly opened and have the same opening direction; the number of the sawtooth concentrators is twice or more than the number of the upper guide parts.

[0147] The guide area arranged on the upper part of the first and second main filling sheets is a V-shaped guide area with a middle V-shaped edge and flat edges on both sides of the V-shaped edge. The V-shaped guide areas of the alternately stacked first and second main filling sheets are stacked on each other to form a V-shaped upper guide part (i.e., V-shaped channel 9102) on the upper part of the water sprinkling and mist dispelling filling module; the V-shaped edge part of the V-shaped guide area of ​​the first and second main filling sheets alternately stacked in the water sprinkling and mist dispelling filling module, a V-shaped sealing surface 9106 for sealing is arranged between the oblique edges on both sides of the V-shaped edge, and the flat edges on both sides of the V-shaped edge of the V-shaped guide area arranged on the upper part of the first and second main filling sheets form an opening structure.

[0148] The V-shaped guide portion is formed by alternately stacking the V-shaped edges of the upper parts of the first and second main filling sheets and along the stacked square V-shaped channel, and the V-shaped channel is flanked by the flat edges on both sides of the V-shaped edges of the first and second main filling sheets to form a fully open V-shaped guide water sprinkling area 9103. When the circulating hot water sprayed from above the water sprinkling and mist eliminating filling unit falls on the V-shaped guide water sprinkling area 9103 of the V-shaped guide portion, it can enter the first flow path and the second flow path at the same time; when the circulating hot water sprayed from above only falls into the V-shaped channel 9102, due to the V-shaped sealing surface 9106 stacked at intervals, the circulating hot water can only enter the first flow path or the second flow path, thereby realizing the first and second flow paths with or without water at intervals.

[0149] The rectangular evaporation heat exchange area in the middle of the first and second main fillers has vertical sides on both sides. The rectangular evaporation heat exchange area in the middle of the first main filler is provided with an oblique wave 9104 inclined to the right, and the rectangular evaporation heat exchange area in the middle of the second main filler is provided with an oblique wave 9104 inclined to the left.

[0150] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A water-spraying and mist-eliminating packing unit, comprising a plurality of main packing sheets (1001, 2001) arranged in a stacked manner, and forming a plurality of fluid channels distributed along the stacking direction and respectively located between adjacent main packing sheets (1001, 2001), each of the fluid channels having a water inlet and an air outlet (1105, 2107, 9002) located at the upper end and an air inlet (1108, 2108, 4002, 9011) located at the lower end, characterized in that: Each of the main filling sheets (1001, 2001) is formed into a sawtooth area (1004, 2002, 9006, 9105) including a plurality of sawtooth units (1005, 2007, 3001, 6001) at a portion adjacent to the air inlet (1108, 2108, 4002, 9011), and adjacent main filling sheets (1001, 2001) are formed at a portion adjacent to the air inlet (1108, 2108, 4002, 9011) to form a sawtooth area (1004, 2002, 9006, 9105) including a plurality of sawtooth units (1005, 2007, 3001, 6001) 01) are spaced from each other at the bottom tips to form a downwardly opening water outlet (1109, 2109, 4001, 9012) for discharging spray water, and adjacent main filling sheets (1001, 2001) are spaced from each other at at least one side of the sawtooth unit (1005, 2007, 3001, 6001) to form an air inlet (1108, 2108, 4002, 9011) for introducing cooling air.

2. The water spraying and mist eliminating packing unit according to claim 1, characterized in that: The two side edges of each of the sawtooth units (1005, 2007, 3001, 6001) extend obliquely relative to the vertical direction, so that the sawtooth unit (1005, 2007, 3001, 6001) forms a cone that tapers downward, and adjacent main filling sheets (1001, 2001) are spaced apart from each other at the two side edges of the sawtooth unit (1005, 2007, 3001, 6001).

3. The water spraying and mist elimination packing unit according to claim 1, characterized in that: The maximum width of the sawtooth unit (1005, 2007, 3001, 6001) is not greater than 500 mm, preferably not greater than 250 mm.

4. The water spraying and mist eliminating packing unit according to claim 1, characterized in that: It also includes a plurality of water collecting grooves (5004, 6002) disposed below the main filling sheet (1001, 2001), each of the water collecting grooves (5004, 6002) being arranged opposite to the water outlet (1109, 2109, 4001, 9012) so as to receive the spray water discharged from the water outlet (1109, 2109, 4001, 9012).

5. The water spraying and mist eliminating filling unit according to claim 4, characterized in that: A supporting drainage strip (5002) is provided in the water collecting groove (5004, 6002), the main filling sheet (1001, 2001) is installed so that the bottom tip of the sawtooth unit (1005, 2007, 3001, 6001) is supported on the supporting drainage strip (5002), and a drainage outlet (5003) is formed at the bottom of the water collecting groove (5004, 6002).

6. The water spraying and mist eliminating filling unit according to claim 5, characterized in that: The bottom tip of the sawtooth unit (1005, 2007, 3001, 6001) is formed in a rectangular shape, and the water collecting groove (5004, 6002) has groove side walls (5001) extending upward to both sides of the bottom tip.

7. The water spraying and mist eliminating filling unit according to any one of claims 1 to 6, characterized in that: The main filling sheet (1001, 2001) comprises an evaporation heat exchange area (1003, 2006) located on the upper side of the sawtooth area (1004, 2002, 9006, 9105) and a guide area (1002, 9003) located on the upper side of the evaporation heat exchange area (1003, 2006), and the top edges of adjacent main filling sheets (1001, 2001) are sealed and connected within a partial width section of the main filling sheet (1001, 2001), and form sealing surfaces (1106, 2102, 9106) that are alternately distributed with the water inlet and outlet (1105, 2107, 9002) along the stacking direction.

8. The water spraying and mist eliminating filling unit according to claim 7, characterized in that: The guide area (1002, 9003) is formed in an isosceles triangle shape that tapers upward, and the waists of adjacent main filling sheets (1001, 2001) located on both sides of the top corners of the guide area (1002, 9003) are alternately sealed and connected.

9. The water spraying and mist eliminating filling unit according to claim 7, characterized in that: The guide area (1002, 9003) is formed to have a V-shaped recess (2004) in the middle part of the top edge, and adjacent main filling sheets (1001, 2001) are sealed and connected at the V-shaped recess (2004) at intervals.

10. The water spraying and mist eliminating filling unit according to claim 7, characterized in that: The guide area (1002, 9003) is formed with a plurality of isosceles triangle-shaped sub-guide areas that are distributed along the width direction of the main filling sheet (1001, 2001) and taper upward, and the waists of adjacent main filling sheets (1001, 2001) located on both sides of the top corners of the sub-guide areas are alternately sealed and connected.

11. The water spraying and mist eliminating packing unit according to claim 7, characterized in that: A flow guide spacer (9007) for guiding the spray water to be distributed over the entire width of the main filling sheet (1001, 2001) is provided between the flow guide areas (1002, 9003) of adjacent main filling sheets (1001, 2001).

12. A cooling tower, characterized in that: The invention comprises a tower body and a water collector (7008, 8005), a water distribution system and a water spraying and defogging filling layer (7011, 8011) arranged from top to bottom in the tower body, wherein the water spraying and defogging filling layer (7011, 8011) comprises a plurality of groups of water spraying and defogging filling units (1101, 2101, 9001, 9101) according to any one of claims 1 to 7 connected to each other at the side, and the tower body is formed with a cooling tower air inlet (7001, 8001) located at the lower side of the water spraying and defogging filling layer (7011, 8011).

13. The cooling tower according to claim 12, characterized in that The guide area (1002, 9003) is formed into an isosceles triangle shape that tapers upward, and the waists of adjacent main filling sheets (1001, 2001) located on both sides of the top corners of the guide area (1002, 9003) are alternately sealed and connected. The tower body is also provided with a water baffle (7009) abutting against the top corners of the guide area (1002, 9003). The water distribution system includes a water distribution main pipe (7005, 8003, 8004), a water distribution branch pipe (7003) respectively connected to the water distribution main pipe (7005, 8003, 8004), and a nozzle (7002, 8009, 8010) installed at the free end of the water distribution branch pipe (7003) and located in the space between adjacent water baffles (7009).

14. The cooling tower according to claim 13, characterized in that The tower body is provided with a damper (7004) located above the nozzles (7002, 8009, 8010) and capable of switching between an open position that allows the space between adjacent baffles (7009) to communicate with the space above and a closed position that separates the space between adjacent baffles (7009) from the space above.

15. The cooling tower according to claim 12, characterized in that: The guide area (1002, 9003) is formed to have a V-shaped recess (2004) in the middle part of the top edge, and adjacent main filler sheets (1001, 2001) are sealed and connected at the V-shaped recess (2004) one by one. The water distribution system includes a water distribution main pipe (7005, 8003, 8004), a high-position water distribution branch pipe connected to the water distribution main pipe (7005, 8003, 8004) and a high-position water distribution branch pipe connected to the water distribution main pipe (7005, 8003, 8004). The invention relates to a water distribution pipe (8008) and a low-level water distribution branch pipe (8002), and nozzles (7002, 8009, 8010) installed at the free ends of the high-level water distribution branch pipe (8008) and the low-level water distribution branch pipe (8002), wherein the water spraying area of ​​the nozzles (7002, 8009, 8010) installed at the free ends of the low-level water distribution branch pipe (8002) is located in the V-shaped recess (2004).

Images