CN107101523B - Non-uniform partitioned water distribution system and wet cooling tower provided with same - Google Patents
Non-uniform partitioned water distribution system and wet cooling tower provided with same Download PDFInfo
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- CN107101523B CN107101523B CN201710255166.1A CN201710255166A CN107101523B CN 107101523 B CN107101523 B CN 107101523B CN 201710255166 A CN201710255166 A CN 201710255166A CN 107101523 B CN107101523 B CN 107101523B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/06—Spray nozzles or spray pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
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Abstract
The invention relates to a non-uniform regional water distribution system, which comprises a central vertical shaft and a water distribution pipe, wherein the central vertical shaft is communicated with the water distribution pipe, a plurality of spray heads are arranged on the water distribution pipe, each spray head comprises a spray head main body and a spray nozzle, the spray head main body is connected with the spray nozzle, and the spray head main body is connected with the water distribution pipe, and the non-uniform regional water distribution system is characterized in that: the water distribution pipes are provided with a plurality of water distribution pipes, the shapes of all the water distribution pipes are completely the same, and all the water distribution pipes are radially distributed by taking the central vertical shaft as the center. The invention also relates to a wet cooling tower provided with the non-uniform partitioned water distribution system. The invention adopts the non-uniform water spraying distribution which is overlapped for many times, simultaneously realizes the non-uniform distribution and the uniform change of the water spraying density, the change of the air flow speed at the outermost periphery is faster, the corresponding change of the water spraying density can be approximate to the change of a quadratic function, the change of the air flow speed at the middle part is slow, the water spraying density can be approximate to the linear change, the air flow change at the middle part is smaller, and the water spraying density can be approximate to a constant.
Description
Technical Field
The invention relates to a non-uniform partitioned water distribution system and a wet cooling tower provided with the same, belonging to the field of thermal power plants and nuclear power generation.
Background
A natural ventilation counter-flow wet cooling tower is a cold end device commonly used in thermal power plants and nuclear power plants, and mainly achieves the purpose of reducing water temperature by carrying out heat and mass exchange through direct contact of water and air. In the traditional design of the cooling tower, a water distribution system generally adopts a uniform water distribution mode, namely the water spraying density is uniform and consistent on the whole water distribution surface along the radial direction. Research shows that the wind speed and the wind volume are gradually enhanced from small to large in the radial direction pointing to the outer wall of the tower by taking the central vertical shaft of the cooling tower as the center. Cold air enters the rain zone through the air inlet of the cooling tower, the air flow of the peripheral area is large, the temperature and the humidity are low, the heat exchange effect is good, and the cooling tower is a strong heat exchange area; only a small part of air flow overcomes the water spraying resistance and enters the central area of the cooling tower, and heat and mass transfer occurs with water spraying in the radial stroke, the temperature and the humidity are rapidly increased and are close to the saturated state when reaching the central area, so that the circulating water in the central area cannot be effectively cooled, and becomes a weak heat exchange area. Therefore, the cooling capacity of the cooling tower is not fully utilized, and the cooling efficiency is low.
Chinese patent 201510318806.X discloses a cooling tower water distribution system, a cooling tower and a cooling tower water distribution method, the cooling tower water distribution system comprises at least one water supply pipe, one end of which is used to communicate with the central vertical shaft of the cooling tower; the water supply pipe is provided with a plurality of injection devices, the heights of the nozzles of the injection devices are gradually reduced from inside to outside by taking the central vertical shaft as a center, and the nozzles of the injection devices are arranged upwards. Although the scheme realizes the uniformity of water distribution to a certain degree, the non-uniformity of the scheme needs to be further improved, and meanwhile, the effect is not ideal in the actual use process.
Chinese patent 201410307376.7 discloses a heat exchange device of a cooling tower, which comprises a splashing mechanism and a filling mechanism, wherein the splashing mechanism comprises a water distribution system with a water inlet and a plurality of water outlets and a nozzle group with a first group of nozzles, a second group of nozzles and a third group of nozzles, wherein a cooling plane formed by the first group of nozzles, the second group of nozzles and the third group of nozzles is vertically intersected with the axis of the tower; the cooling plane comprises a central zone in which the first set of nozzles is arranged, an inner zone in which the second set of nozzles is arranged and a peripheral zone in which the third set of nozzles is arranged; the central area, the inner area and the peripheral area are all annular and are sequentially arranged in the central area, the inner area and the peripheral area in the radial direction of the tower drum, the packing mechanism comprises a first area, a second area and a third area which are sequentially arranged in the radial direction of the tower drum, the first area and the second area respectively correspond to the projections of the central area and the inner area in the axial direction of the tower drum, and the water spraying density of the first area is smaller than that of the second area. The non-uniformity control of the scheme needs to be enhanced, the specific nozzle distribution lacks technical inspiration, and the overall requirement on the number of the nozzles is high, so that the cost is high.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a non-uniform subarea water distribution system which is reasonable in structural design, low in cost and more reasonable in water distribution mode and a wet cooling tower provided with the system. The system adopts a non-uniform regional water distribution mode instead of a conventional uniform water distribution mode, so that air and water can be in full contact for heat exchange, the cooling capacity of the cooling tower is fully utilized, and the efficiency of the cooling tower is improved.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a non-uniform subregion water distribution system, includes central shaft and water distribution pipe, central shaft and water distribution pipe intercommunication are provided with a plurality of shower nozzles on the water distribution pipe, and the shower nozzle includes shower nozzle main part and nozzle, and shower nozzle main part and nozzle link to each other, and the shower nozzle main part links to each other its characterized in that with the water distribution pipe: the water distribution pipes are multiple, the shapes of all the water distribution pipes are completely the same, and all the water distribution pipes are radially distributed by taking the central vertical shaft as the center; the included angle between any water distribution pipe and the central vertical shaft is alpha, the included angle between the water distribution pipe and a spray head arranged on the water distribution pipe is beta, wherein alpha is more than or equal to 45 degrees and less than or equal to 75 degrees,
all the nozzles arranged on the same water distribution pipe are parallel to each other; the length of the water distribution pipe is L, the number of the spray heads arranged on each water distribution pipe is N, and the distance between the nth spray head and the (N + 1) th spray head is L along the direction of the water distribution pipe n ，
N is more than or equal to 1 and less than or equal to N-1; the section of the nozzle is circular, a plurality of circular spray holes are formed in the nozzle, the centers of circles of the spray holes are distributed along a plurality of circular arcs, all the circular arcs have the same center, the spray holes distributed on the same circular arc have the same radius, and two adjacent spray holes distributed on the same circular arc areThe central angle formed by the hole and the center of the circular arc is theta,
the radius of the nozzle is R, the radius of any circular arc is R, and the radius of the spray holes distributed on the circular arc is R', wherein
The radial wind speed distribution in the cooling tower is uneven, and in the process of a stroke from the air inlet to the central vertical shaft, the wind speed is gradually reduced due to the existence of water spraying resistance, so that according to the principle of wind-water matching, in order to ensure that the gas-water ratio is uniform everywhere, the water distribution mode is optimized to adapt to the distribution of an airflow flow field. Aiming at the distribution characteristics of large periphery and small center of wind speed in the cooling tower, the water distribution mode of the cooling tower needs to adapt to the distribution rule of the airflow field in the tower, the water spraying density of a central area can be properly reduced, and the peripheral water spraying density is increased. By adjusting the distance between the water distribution pipe and the splashing device and reasonably selecting the caliber of the nozzle in different areas, on the premise of ensuring the maximum water supply flow in summer, the water distribution flow is gradually increased from inside to outside to adapt to the distribution rule of the airflow flow field in the tower, so that the water spraying density is matched with the ventilation density of the divided areas, the configuration of more water spraying in a high-wind area and less water spraying in a low-wind area is realized, and the cooling effect of the whole tower is improved. The non-vertical distribution of the nozzles is adopted, the gravity is fully utilized, water drops are covered as large as possible, the uniform and variable non-uniform distribution in a space range is ensured, and the continuous variation of the wind speed is fully considered. The shower nozzle that is installed on every distribution pipe and is closest to central shaft is the 1 st shower nozzle, then outwards is 2 nd shower nozzle, 3 rd shower nozzle until the nth shower nozzle in proper order. The nozzle quantity that the design of this scheme of adoption is close to the regional correspondence of central part is less, can regard as the homogeneous region approximately, and the nozzle quantity that the part that is close to the outside corresponds is more, fully considers the wind speed influence, and on the other hand nozzle quantity is more, and nozzle slope installation design simultaneously makes the trickle density of peripheral part superpose many times, realizes peripheral part's continuous variation, has compromise cost and in-service use effect simultaneously. The size and structure of the nozzle and the spray hole are designed, the influence of gravity and distance is comprehensively considered, and the nozzle and the spray hole are supported byThe near-outer side drenches are overlapped for multiple times, so that the drenches are uniformly changed in space and are non-uniformly distributed in space.
The pressure device is arranged in the sprayer body, the buckle is arranged at the edge of the sprayer, the nozzle cover covers the surface of the nozzle, and the nozzle cover is installed on the sprayer through the buckle. According to the actual cooling task, the spraying amount can be controlled, and the cost is reduced.
The sprayer is provided with a rotating shaft, the sprayer is arranged on a water distribution pipe through the rotating shaft, the front end of the rotating shaft is provided with a front limiting structure, and the rear end of the rotating shaft is provided with a rear limiting structure.
One end of all water distribution pipes of the invention is connected with the same point on the central vertical shaft, the connecting line of the other ends of all the water distribution pipes is a sine curve, and the function formula of the sine curve is
Wherein h is the vertical height between the two ends of the water distribution pipe, and gamma is the serial number of the water distribution pipe. Sufficient height can achieve sufficient coverage of the sprayed water. One ends of all the water distribution pipes are distributed in a high-low mode to form a sine curve, and a staggered structure is fully formed, so that the sprayed water density can be further non-uniformly distributed and uniformly changed.
The invention discloses a water distribution pipe, which is characterized in that a roller is arranged at one end connected with a central vertical shaft, an upper limiting mechanism is arranged above the roller, a lower limiting mechanism is arranged below the roller, the roller is connected with a motor, the upper limiting mechanism and the lower limiting mechanism are both fixed on the central vertical shaft, and a clamping mechanism is arranged on the roller.
The utility model provides a wet cooling tower installs inhomogeneous subregion water distribution system, and its inside is installed in water distribution district top, its characterized in that by last to including distributing water district, filler district and rain zone down in proper order: the vertical height between the spray head and the water distribution area is
The water distribution area is sequentially divided into an inner area, a middle area and an outer area from inside to outside, wherein the inner area is circular, the middle area and the outer area are annular, the water spraying density of the outer area is higher than that of the middle area, and the water spraying density of the middle area is higher than that of the inner area.
One end of each water distribution pipe of the invention is connected with the same point on the central vertical shaft, the connecting line of the other end of each water distribution pipe is a sine curve,
the height requirement of the overhigh structural design on the cooling tower is high, and the effective repeated superposition of water spraying cannot be realized due to the overlow height.
Compared with the prior art, the invention adopts the non-uniform water spraying distribution which is overlapped for many times, simultaneously realizes the non-uniform distribution and the uniform change of the water spraying density, the change of the air flow speed at the outermost periphery is faster, the corresponding change of the water spraying density can be approximate to the change of a quadratic function, the change of the air flow speed at the middle part is slower, the corresponding water spraying density can be approximate to the linear change, the air flow change at the middle part is smaller, and the corresponding water spraying density can be approximate to a constant.
Drawings
FIG. 1 is a schematic view of a non-uniform zonal water distribution system (single water distribution pipe) according to an embodiment of the present disclosure.
Fig. 2 is a schematic front view of a nozzle according to an embodiment of the present invention.
FIG. 3 is a schematic perspective view of a non-uniform zonal water distribution system according to an embodiment of the present disclosure.
Fig. 4 is a schematic sectional view of a wet cooling tower (without a non-uniform zoned water distribution system) according to an embodiment of the present invention.
Fig. 5 is a schematic top view of a wet cooling tower according to an embodiment of the present invention (without water distribution pipes).
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
See fig. 1-5.
The embodiment is a non-uniform regional water distribution system, which comprises a central shaft 6 and a water distribution pipe 5, wherein the central shaft 6 is communicated with the water distribution pipe 5, a plurality of spray heads are arranged on the water distribution pipe 5, each spray head comprises a spray head main body and a spray nozzle 12, the spray head main bodies are connected with the spray nozzles 12, the spray head main bodies are connected with the water distribution pipe 5, the water distribution pipe 5 is provided with a plurality of water distribution pipes, all the water distribution pipes 5 are identical in shape, and all the water distribution pipes 5 are radially distributed by taking the central shaft as a center.
The included angle between any water distribution pipe 5 and the central vertical shaft 6 is alpha, the included angle between the water distribution pipe 5 and the spray head 1 arranged on the water distribution pipe 5 is beta, wherein alpha is more than or equal to 45 degrees and less than or equal to 75 degrees,
all the spray heads arranged on the same water distribution pipe 5 are parallel to each other; the length of the water distribution pipe 5 is L, the number of the spray heads arranged on each water distribution pipe 5 is N, and the distance between the nth spray head and the (N + 1) th spray head is L along the direction of the water distribution pipe 5 n ，
1≤n≤N-1。
In this embodiment, for convenience of description, N =4 is taken for explanation. From right to left, what install on the water distribution pipe 5 is shower nozzle 1, no. two shower nozzles 2, no. three shower nozzles 3 and No. four shower nozzles 4 in proper order. The first spray head 1, the second spray head 2, the third spray head 3 and the fourth spray head 4 are mutually parallel. The distance between the first spray head 1 and the second spray head 2 in the direction of the water distribution pipe 5 is L 1 The distance between the second spray head 2 and the third spray head 3 in the direction of the water distribution pipe 5 is L 2 The third nozzle 3 and the fourth nozzle 4 are spaced by L along the direction of the water distribution pipe 5 3 . Preferably, α =75 ° and β =20 ° in the present embodiment. L is 1 ≈0.056L,L 2 ≈0.049L,L 3 ≈0.046L。
The section of the nozzle 12 is circular, a plurality of circular spray holes 7 are arranged on the nozzle 12, the centers of the spray holes 7 are distributed along a plurality of circular arcs, all the circular arcs have the same center, the spray holes 7 distributed on the same circular arc have the same radius, the central angle formed by the adjacent two spray holes 7 distributed on the same circular arc and the center of the circular arc is theta,
the radius of the nozzle 12 is R, the radius of any circular arc is R, and the radius of the spray holes 7 distributed on the circular arc is R', wherein
In the present embodiment, four circular arcs are shared, and the four circular arcs are arranged from top to bottom on the cross section of the nozzle 12, and for simplicity of description, two spray holes 7 are distributed on the same circular arc in the figure. In the present example, θ =50 °, R =2.5r, R' =0.1R.
The radial wind speed distribution in the cooling tower is uneven, and in the process of a stroke from the air inlet to the central vertical shaft, the wind speed is gradually reduced due to the existence of water spraying resistance, so that according to the principle of wind-water matching, in order to ensure that the gas-water ratio is uniform everywhere, the water distribution mode is optimized to adapt to the distribution of an airflow flow field. Aiming at the distribution characteristics of large periphery and small center of wind speed in the cooling tower, the water distribution mode of the cooling tower needs to adapt to the distribution rule of the airflow field in the tower, the water spraying density of a central area can be properly reduced, and the peripheral water spraying density is increased. By adjusting the distance between the water distribution pipe and the splashing device and reasonably selecting the caliber of the nozzle in different areas, on the premise of ensuring the maximum water supply flow in summer, the water distribution flow is gradually increased from inside to outside to adapt to the distribution rule of the airflow flow field in the tower, so that the water spraying density is matched with the ventilation density of the divided areas, the configuration of more water spraying in a high-wind area and less water spraying in a low-wind area is realized, and the cooling effect of the whole tower is improved. The non-vertical distribution of the nozzles is adopted, the gravity is fully utilized, water drops are covered as large as possible, the uniform and variable non-uniform distribution in a space range is ensured, and the continuous variation of the wind speed is fully considered. The shower nozzle that is installed on every distribution pipe and is closest to central shaft is the 1 st shower nozzle, then outwards is 2 nd shower nozzle, 3 rd shower nozzle until the nth shower nozzle in proper order. The design of this scheme of adoption is close to the nozzle quantity that the region of central part corresponds less, can regard as the homogeneous region approximately, and the nozzle quantity that the part that is close to the outside corresponds is more, fully considers the wind speed influence, and on the other hand nozzle quantity is more, and the design is installed in the slope of nozzle simultaneously, makes the water spray density of peripheral part superpose many times, realizes peripheral part's continuous variation, has compromise cost and in-service use effect simultaneously. The size structural design of the nozzle and the spray hole comprehensively considers the influence of gravity and distance, so that the water spraying close to the outer side is superposed for multiple times, and the uniform change of the water spraying in space and the non-uniform distribution in space are realized.
Preferably, the pressure device is arranged in the spray head main body, the edge of the spray head is provided with a buckle, the surface of the nozzle 12 is covered with a nozzle cover, and the nozzle cover is arranged on the spray head through the buckle. According to the actual cooling task, the spraying amount can be controlled, and the cost is reduced.
Preferably, the spray head is provided with a rotating shaft, the spray head is arranged on the water distribution pipe through the rotating shaft, the front end of the rotating shaft is provided with a front limiting structure, and the rear end of the rotating shaft is provided with a rear limiting structure.
Preferably, one end of each water distribution pipe 5 is connected to the same point on the central shaft 6, and the connection line of the other ends of all water distribution pipes 5 is a sine curve with the function formula of the sine curve being
Wherein h is the vertical height between the two ends of the water distribution pipe, and gamma is the serial number of the water distribution pipe. Sufficient height to achieve sufficient coverage of the shower. One ends of all the water distribution pipes 5 are distributed in a high-low mode to form a sine curve, and a staggered structure is fully formed, so that the sprayed water density can be further non-uniformly distributed and uniformly changed.
The first water distribution pipe 51, the second water distribution pipe 52 and the third water distribution pipe 53 are distributed in the counterclockwise direction in the drawing. γ =1 for the first water distribution pipe 51, γ =2 for the second water distribution pipe 52, and γ =3 for the third water distribution pipe 53.
Preferably, one end of the water distribution pipe 5 connected with the central shaft 6 is provided with a roller, an upper limiting mechanism is arranged above the roller, a lower limiting mechanism is arranged below the roller, the roller is connected with a motor, the upper limiting mechanism and the lower limiting mechanism are both fixed on the central shaft 6, and a clamping mechanism is arranged on the roller.
The present embodiments also include a wet cooling tower equipped with a non-uniform zoned water distribution system.
The wet cooling tower comprises a cylinder body 8, the inside of the cylinder body 8 sequentially comprises a water distribution area 9, a filler area 10 and a rain area 11 from top to bottom, a spray head is arranged above the water distribution area 9, the vertical height between the spray head and the water distribution area 9 is h',
in this example, h' =3L.
The water distribution area is sequentially divided into an inner area A, a middle area B and an outer area C from inside to outside, wherein the inner area A is circular, the middle area B and the outer area C are annular, the water spraying density of the outer area C is greater than that of the middle area B, and the water spraying density of the middle area B is greater than that of the inner area A.
On the section of a water distribution area 9 in a cylinder 8 of the cooling tower, the center is a central vertical shaft 6, and the radius of an inner area A is R A Water spraying density of Q A . The radius of the middle area B is R B Water spraying density of Q B . The outer region C has a radius R c Water spraying density of Q C . Wherein R is A ＜R B ＜R C 。Q A ＜Q B ＜Q C And the total water spraying amount of the inner zone A, the middle zone B and the outer zone C is ensured to be certain.
In the embodiment, the non-uniform water spraying distribution which is overlapped for many times is adopted, the non-uniform distribution and the uniform change of the water spraying density are realized simultaneously, the change of the air flow speed at the outermost periphery is faster, the corresponding change of the water spraying density can be approximate to the change of a quadratic function, the change of the air flow speed at the middle part is slower, the corresponding water spraying density can be approximate to the linear change, the air flow change at the middle part is smaller, and the corresponding water spraying density can be approximate to a constant.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. Inhomogeneous subregion water distribution system, including central shaft and distribution pipe, central shaft and distribution pipe intercommunication are provided with a plurality of shower nozzles on the distribution pipe, and the shower nozzle includes shower nozzle main part and nozzle, and shower nozzle main part and nozzle link to each other, and the shower nozzle main part links to each other its characterized in that with the distribution pipe: the water distribution pipes are provided with a plurality of water distribution pipes, the shapes of all the water distribution pipes are completely the same, and all the water distribution pipes are radially distributed by taking the central vertical shaft as the center; the included angle between any water distribution pipe and the central vertical shaft is alpha, the included angle between the water distribution pipe and the spray head arranged on the water distribution pipe is beta, wherein alpha is more than or equal to 45 degrees and less than or equal to 75 degrees,
all the nozzles arranged on the same water distribution pipe are parallel to each other; the length of the water distribution pipe is L, the number of the spray heads arranged on each water distribution pipe is N, and the distance between the nth spray head and the (N + 1) th spray head is L along the direction of the water distribution pipe n ，
N is more than or equal to 1 and less than or equal to N-1; the section of the nozzle is circular, a plurality of circular spray holes are arranged on the nozzle, the centers of the spray holes are distributed along a plurality of circular arcs, all the circular arcs have the same center, the spray holes distributed on the same circular arc have the same radius, the central angle formed by the adjacent two spray holes distributed on the same circular arc and the center of the circular arc is theta,
the radius of the nozzle is R, the radius of any circular arc is R, and the radius of the spray holes distributed on the circular arc is R', wherein
One end of each water distribution pipe is connected to the same point on the central vertical shaft, the connecting line of the other ends of all the water distribution pipes is a sine curve, and the function formula of the sine curve is
Wherein h is the vertical height between two ends of the water distribution pipe, and gamma is the serial number of the water distribution pipe;
the water distribution pipe is characterized in that one end of the water distribution pipe connected with the central vertical shaft is provided with a roller, an upper limiting mechanism is arranged above the roller, a lower limiting mechanism is arranged below the roller, the roller is connected with a motor, the upper limiting mechanism and the lower limiting mechanism are both fixed on the central vertical shaft, and a clamping mechanism is arranged on the roller.
2. The non-uniform zonal water distribution system of claim 1, wherein: the sprayer is characterized in that a pressurizing device is arranged in the sprayer body, a buckle is arranged at the edge of the sprayer, a nozzle cover covers the surface of the nozzle, and the nozzle cover is installed on the sprayer through the buckle.
3. The non-uniform zonal water distribution system of claim 1 or 2, wherein: the sprayer is provided with a rotating shaft, the sprayer is arranged on the water distribution pipe through the rotating shaft, the front end of the rotating shaft is provided with a front limiting structure, and the rear end of the rotating shaft is provided with a rear limiting structure.
4. The wet cooling tower is provided with the non-uniform regional water distribution system as claimed in any claim of 1 to 3, the interior of the non-uniform regional water distribution system sequentially comprises a water distribution area, a filler area and a rain area from top to bottom, and a spray head is arranged above the water distribution area, and the non-uniform regional water distribution system is characterized in that: the vertical height between the spray head and the water distribution area is h',
5. the wet cooling tower of claim 4, wherein: the water distribution area is divided into an inner area, a middle area and an outer area from inside to outside in sequence, wherein the inner area is circular, the middle area and the outer area are annular, the water spraying density of the outer area is greater than that of the middle area, and the water spraying density of the middle area is greater than that of the inner area.
6. The wet cooling tower of claim 5, wherein: one end of each water distribution pipe is connected with the same point on the central vertical shaft, the connecting line of the other end of each water distribution pipe is a sine curve,
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| CN108519002A (en) * | 2018-04-04 | 2018-09-11 | 华润电力（沧州运东）有限公司 | A kind of cooling tower |
| CN110398013B (en) * | 2019-07-11 | 2021-05-11 | 依米康科技集团股份有限公司 | Wet film humidifying and cooling method, system and device and computer storage medium |
| CN111928681A (en) * | 2020-08-12 | 2020-11-13 | 中国电力工程顾问集团西北电力设计院有限公司 | Counter-flow cooling tower water distribution device |
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| CN204718480U (en) * | 2015-06-11 | 2015-10-21 | 苏跃进 | A kind of cooling tower water distribution system and cooling tower |
| CN106403700A (en) * | 2016-09-09 | 2017-02-15 | 河海大学常州校区 | Cooling tower real-time dynamic water distribution system and method based on non-uniform spraying device |
| CN206905606U (en) * | 2017-04-19 | 2018-01-19 | 华电电力科学研究院 | A kind of non-homogeneous subregion water distribution system and the wet cooling tower for installing the system |
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