CN111006519A - Natural draft counterflow cooling tower air guide pipe - Google Patents
Natural draft counterflow cooling tower air guide pipe Download PDFInfo
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- CN111006519A CN111006519A CN201811369891.2A CN201811369891A CN111006519A CN 111006519 A CN111006519 A CN 111006519A CN 201811369891 A CN201811369891 A CN 201811369891A CN 111006519 A CN111006519 A CN 111006519A
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- 238000001816 cooling Methods 0.000 title claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 153
- 239000000945 filler Substances 0.000 claims abstract description 92
- 238000005507 spraying Methods 0.000 claims abstract description 92
- 230000009467 reduction Effects 0.000 claims abstract description 12
- 238000013016 damping Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 abstract description 8
- 238000012546 transfer Methods 0.000 abstract description 7
- 239000003570 air Substances 0.000 description 149
- 238000009826 distribution Methods 0.000 description 11
- 239000012080 ambient air Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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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
- F28C1/02—Direct-contact trickle coolers, e.g. cooling towers with counter-current only
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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
- F28F25/10—Component parts of trickle coolers for feeding gas or vapour
- F28F25/12—Ducts; Guide vanes, e.g. for carrying currents to distinct zones
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a natural ventilation counter-flow cooling tower air guide pipe which comprises an air inlet module, an air guide module, an air outlet module, a mounting groove and a damping noise reduction pad. A plurality of air guide pipes are arranged in a water collecting pool below a water spraying filler area of the cooling tower, and each air guide pipe comprises 1 air inlet module, a plurality of air guide modules and 1 air outlet module; the upper part of the air guide module is an arc-shaped surface, two sides of the air guide module are drooping surfaces, the bottom of the drooping surface is below the working water surface of the water collecting pool, the height from the top of the arc-shaped surface of the air guide module to the working water surface of the water collecting pool is 35% of the height of an air inlet of the cooling tower, the air inlet module, the air guide module and the air outlet module are embedded and connected between the inner supporting upright posts of the cooling tower, the air inlet module is arranged below the edge of a trickle filler area, the air outlet module is arranged in the central area of. The heat and mass transfer strength of the central area of the cooling tower is improved, and the cooling efficiency of the cooling tower is improved.
Description
Technical Field
The invention relates to an energy-saving technology for improving the efficiency of a cooling tower, in particular to a natural ventilation counter-flow type cooling tower air guide pipe.
Background
A natural draft counterflow cooling tower is an evaporative cooling device represented by a hyperbolic cooling tower, in which water is subjected to heat and mass exchange with air flowing therethrough, thereby lowering the temperature of the water. The natural draft counterflow cooling tower is filled with water, the water in the tower flows back from top to bottom, and the air in the tower flows back from bottom to top. Three stages of cooling tower: the water distributor is sent to the top of the packing in the tower in the water spraying area, and heat can be continuously transferred to the air due to the high water temperature; the filler water at the top end in the tower exchanges with the hot gas at the bottom, commonly called as a countercurrent section; when the filler reaches the collecting tank at the bottom, hot water is cooled to become cold water, and the counter-flow cooling tower is widely used in some large-scale cooling circulating water. Including the thermoelectricity field, improve the cold source for turbo motor's cold junction. The efficiency of the turbine can be improved due to the high efficiency of the cooling tower (the temperature of the water discharged from the cooling tower is low), and if the same electricity is generated, the coal required for combustion in the high-efficiency cooling tower is less, so that the fuel can be saved and the emission of carbon dioxide can be reduced.
Hot water enters the cooling tower, and then is sprayed on the top surface of the water spraying filler through the water distribution system, and then is subjected to heat and mass transfer with air, the heat is transferred to the air, the temperature and the humidity of the air are increased, the density is reduced, the air flows in from the air inlet under the buoyancy effect of the density difference of the air inside and outside the tower, and after the heat and the mass exchange of the rain area, the water spraying filler area and the spraying area, the heat in the water is released to the atmosphere through the tower barrel. The amount of ventilation is proportional to the air density difference and inversely proportional to the airflow resistance of the cooling tower. The heat exchange of the cooling tower mainly comprises three areas, namely a spraying area, a water spraying filler area and a rain area, wherein the heat exchange amount of the spraying area and the water spraying filler accounts for 80% of the heat exchange amount of the whole cooling tower, and the rain area accounts for about 20%. The resistance of the cooling tower mainly comprises a water spraying filler, airflow steering, a structure in the tower, rain area resistance and outlet kinetic energy loss, wherein the proportion of the rain area resistance to the whole tower resistance is about 40%, the rain area resistance consists of transverse resistance and vertical resistance, and the proportion of the transverse resistance to the rain area resistance is about 60% (reference: author: Zhao Shun' an, etc.; seawater cooling tower, China Water conservancy and hydropower Press, 2007, 1 month). After air outside the tower enters the tower from the air inlet, the temperature and the humidity of the air in the rain area along the radial direction are continuously increased, and the heat and mass transfer driving force of the central area of the cooling tower is reduced. The rain area air flow velocity is gradually reduced along the radial direction under the influence of the resistance of falling raindrops and the upward turning and shunting of air in the rain area of the cooling tower. The air flow rate of the packing section of the water spraying area in the cooling tower forms the distribution of low inside and high outside, and the water temperature of the water collecting tank is distributed low outside and high inside. This means that the outside cold air is difficult to enter the central position of the tower, so that the heat exchange at the central position of the tower is poor, and the total temperature of the water discharged from the tower is increased. The effective deep feeding of the ambient air into the center of the cooling tower is an effective measure for enhancing the heat and mass transfer strength of the central area of the cooling tower. The higher the efficiency of the cooling tower is, the larger the temperature difference of the water temperature in and out of the tower is, and the temperature of the water in and out of the tower is reduced.
Data show that for a power plant using a turbo generator set, the reduction of the cooling water temperature and the improvement of the heat efficiency are in a direct proportion relation, and for a medium-pressure unit, the efficiency can be improved by 0.47% when the cooling water temperature is reduced once; the high-pressure unit is improved by 0.35%; the nuclear power plant is improved by 0.7 percent. Generally, the temperature of circulating water rises by 1 ℃, the coal consumption of power generation rises by about 1g/kW.h, and in summer, when the load of a unit is limited due to the rise of the temperature of the circulating water, the temperature of the circulating water rises by 1 ℃, and the coal consumption of power generation rises by about 3.6 g/kW.h. The results tested by the Western's Ann thermal research institute show that: the temperature difference of the circulating water of the 200MW unit entering and leaving the tower can be reduced by 1 ℃ every time, and 1550t of standard coal (calculated by 200 days of annual power generation) can be saved. Therefore, the economic benefit brought by the reduction of the tower water temperature is very considerable.
The Chinese patent document discloses an air inlet guide plate at an air inlet area of a natural ventilation counter-flow cooling tower, and the grant publication number CN 20217733U: 2012.03.28. the annular guide plate is arranged between a tower water spraying filler area and the water surface of a water collecting tank in a cooling tower rain area by adopting a layered air inlet and air distribution technology, the air inlet area is divided into an upper layer and a lower layer, after layering, the lower layer is not sprayed with rain, and air can be free from rain resistance, so that the air flow entering the central area of the cooling tower is increased to a certain extent compared with non-layering, the air speed distribution uniformity of the cross section of the water spraying filler can be improved, and the water outlet temperature can be reduced by 0.5-1.5 ℃. However, a large number of supporting columns exist between the water spraying filler area of the cooling tower and the water collecting tank, and support components such as water spraying filler, a water distribution spraying system, a water receiver and the like. The installation of a large-area circular guide plate in a rain zone is difficult to realize, and the large-area circular guide plate can generate extra air inlet resistance to influence the total air inlet amount.
Disclosure of Invention
In order to overcome the resistance of a rain area to air inlet and effectively improve the efficiency of the cooling tower. The natural ventilation counter-flow cooling tower air guide pipe provided by the invention can directly send ambient air to a central area with poor heat exchange of the cooling tower, can meet the requirement of improving the heat and mass transfer strength of the central area of the cooling tower, and has the advantages of simplicity and convenience in installation, low manufacturing cost and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: a natural ventilation counter-flow cooling tower air guide pipe comprises an air inlet module, an air guide module, an air outlet module, a mounting groove and a damping noise reduction pad. A plurality of air guide pipes are arranged on the water surface of the water collecting tank below the water spraying filler area of the cooling tower, and each air guide pipe comprises 1 air inlet module, a plurality of air guide modules and 1 air outlet module; the upper part of the air guide module is an arc-shaped surface, two sides of the air guide module are drooping surfaces, the bottom of the drooping surface is below the working water surface of the water collecting pool, and the height from the top of the arc-shaped surface of the air guide module to the working water surface of the water collecting pool is 35% of the height of the air inlet of the cooling tower; the air inlet module, the air guide module and the air outlet module are embedded and connected between the inner supporting columns of the cooling tower, the air inlet module is arranged below the edge of a water spraying filler area, the air outlet module is arranged in the central area of the water spraying filler area, the air outlet modules are distributed in a dispersed mode from the center of the water spraying filler area to the periphery, and the total air guide channel sectional area of the air guide pipes is larger than 5% of the effective area of the air inlet of the cooling tower. The mounting grooves are fixed on two side vertical surfaces between the inner supporting columns of the cooling tower and connected with a plurality of inner supporting columns to form a through long air guide pipe mounting groove.
In the transmission process of the dry low-temperature ambient air from the air inlet module to the air outlet module, the influence of the resistance of a rain area is avoided, and heat and mass exchange is carried out with cooling water on the pool surface. Because the density difference is formed between the damp-hot low-density gas in the middle of the rain area of the cooling tower and the dry-cold high-density gas at the air inlet, the air flow rate in the air guide pipe is higher than the air flow rate of the cooling air in the rain area outside the air guide pipe. According to the characteristic that the water temperature of the water collecting tank has low outside and high inside distribution, the air outlet modules in the central area of the water spraying filler area are relatively concentrated in the center of the water spraying filler area and properly dispersed towards the peripheral area, and the improvement of the whole heat exchange efficiency is facilitated. When the sectional area of the total air guide channel is equal to 5% of the area of the air inlet, the water outlet temperature can be reduced by over 0.6 ℃. The larger the sectional area of the total air guide channel is, the more the fresh air intake of the environment is, more ambient air can be effectively and deeply sent into the central area of the cooling tower, and the larger the reduction range of the water temperature of the outlet water of the cooling tower is.
The bottom of the vertical surface of the air guide module is a right-angle plane, a stiffening rib is arranged between the vertical surface and the right-angle plane, when the air guide module is placed, the right-angle plane is embedded into the mounting groove, and the right-angle plane is in movable fit with the bottom of the mounting groove. The air inlet module is an upper arc-shaped chamfer angle of the outer end on the basis of the air guide module to form an air inlet end with a lower outer part and a higher inner part, the chamfer angle is 45 degrees, and the inner end of the air inlet module is an embedded interface with the air guide module. The air outlet module be the rectangular pipe, the inner be with the embedded interface of wind-guiding module mutually, the interface part communicates with each other with the wind-guiding passageway of wind-guiding module, the rectangular pipe width is unanimous with the wind-guiding module width, the rectangular pipe height all around is unanimous with the wind-guiding module top height that goes out, the rectangle export area is greater than 20% of wind-guiding passageway sectional area, the rectangular pipe both sides and outer end bottom are interior book right angle plane, set up stiffening rib between lower part and the right angle plane. The top of the rectangular pipe is consistent with the top of the arc-shaped surface of the air outlet guide module in height, hot air in the central area of the cooling tower is prevented from entering the air outlet module to influence the air speed, the area of an air outlet at the top is larger than the sectional area of an air guide channel, the water falling resistance of a rectangular outlet can be reduced, and the air outlet speed is improved.
In the rain zone from the trickle filler zone to the working water surface of the collecting tank, the main heat exchange is completed at the upper part of the rain zone, and the closer to the working water surface, the less the heat exchange. The peripheral air flow rate of the cooling tower in the rain zone is high, and the air temperature and the moisture content are relatively low, which indicates that the heat absorption and moisture absorption capacity of the peripheral air is not fully utilized. The arrangement of the air guide module leads to the proper reduction of the intake of the peripheral air, but basically does not affect the heat exchange of the peripheral air. After air outside the tower enters the tower from the air inlet of the herringbone column, the temperature and the humidity of the air entering the tower are continuously increased, a trend of upward turning and shunting is formed, the height of the air guide module is controlled under the condition that the effective air guide area is met, and the height of the air guide module is limited at the lower part of the air inlet of the cooling tower (the height is not more than 35%). The air inlet module is arranged below the edge of the water spraying filler area and is away from the air inlet of the cooling tower herringbone column by a distance of several meters, and the air inlet end of the air inlet module is an oblique angle with a low outer part and a high inner part, so that the influence of the air inlet module on an air inlet space is reduced.
The central area of the water spraying filler area is related to the radius (area) of the water spraying filler area. The larger the radius of the water spraying filler area is, the longer the radial path from the air inlet of the cooling tower to the middle part of the water spraying filler area is, the air flow rate is gradually reduced along the radial direction, and the ratio of the high-temperature and high-humidity range in the middle part of the water spraying filler area is larger. According to different radiuses of the water spraying filler zone, the central area range of the water spraying filler zone is defined, the requirement of fresh air intake of the environment is met, and the heat and mass transfer process of the central area of the cooling tower is optimized. When the radius of the water spraying filler area is below 30m, the central area of the water spraying filler area is in the range of 47% of the radius of the water spraying filler area by taking the middle point of the cooling tower as the center of a circle, and when the radius of the water spraying filler area is above 30m, the radius of the central area of the water spraying filler area is increased by 2% every 5 m.
When the radius of the water spraying filler area is 30-35 m, the radius of the central area of the water spraying filler area is 47-49% of the radius of the water spraying filler area, and the distance between the edge of the central area of the water spraying filler area and the edge of the water spraying filler area is 15.90-17.85 m.
When the radius of the water spraying filler area is between 35m and 40m, the radius of the central area of the water spraying filler area is 49 percent to 51 percent of the radius of the water spraying filler area, and the distance between the edge of the central area of the water spraying filler area and the edge of the water spraying filler area is between 17.85m and 19.60 m.
When the radius of the water spraying filler area is between 40m and 45m, the radius of the central area of the water spraying filler area is within the range of 51 percent to 53 percent of the radius of the water spraying filler area, and the distance between the edge of the central area of the water spraying filler area and the edge of the water spraying filler area is between 19.60m and 21.15 m.
When the radius of the water spraying filler area is 45-50 m, the radius of the central area of the water spraying filler area is 53-55% of the radius of the water spraying filler area, and the distance between the edge of the central area of the water spraying filler area and the edge of the water spraying filler area is 21.15-22.50 m.
When the radius of the water spraying filler area is between 50m and 55m, the radius of the central area of the water spraying filler area is within the range of 55% to 57% of the radius of the water spraying filler area, and the distance between the edge of the central area of the water spraying filler area and the edge of the water spraying filler area is between 22.50m and 23.65 m.
When the radius of the water spraying filler area is 55-60 m, the radius of the central area of the water spraying filler area is 57-59% of the radius of the water spraying filler area, and the distance between the edge of the central area of the water spraying filler area and the edge of the water spraying filler area is 23.65-24.60 m.
When the radius of the water spraying filler area is between 60m and 65m, the radius of the central area of the water spraying filler area is within the range of 59 percent to 61 percent of the radius of the water spraying filler area, and the distance between the edge of the central area of the water spraying filler area and the edge of the water spraying filler area is between 24.60m and 25.35 m.
When the radius of the water spraying filler area is 65-70 m, the radius of the central area of the water spraying filler area is 61-63% of the radius of the water spraying filler area, and the distance between the edge of the central area of the water spraying filler area and the edge of the water spraying filler area is 25.35-25.90 m.
When the air guide pipe is made of an anticorrosive weather-resistant ultrathin material, the upper part of the air guide module is provided with a damping noise reduction pad. The damping noise reduction pad is arranged on the outer surface of the air guide module, so that the noise of hitting of a rain area on the air guide pipe can be reduced, the noise radiation intensity is reduced, and the influence on the sound environment is reduced. The air guide pipe is made of an anticorrosive weather-resistant ultrathin material so as to adapt to the use conditions of a rain area.
The invention has the advantages that the invention can directly send the ambient air to the central area with poor heat exchange of the cooling tower, the air flow in the air guide pipe is not influenced by the resistance of rain, the ventilation quantity of the whole cooling tower and the ventilation quantity of the central area are relatively increased, the uneven wind speed distribution of the section of the water spraying filler is greatly improved, the heat and mass transfer strength of the central area of the cooling tower is improved, and the cooling efficiency of the cooling tower is improved. The method is suitable for both newly-built cooling towers and the energy-saving reconstruction of the already-built cooling towers. The wind-proof and wind-proof device is suitable for working environments influenced by lateral wind and windless working environments. And can be applied in a manner of being superposed with an air guide system for preventing side wind or other wind distribution and water distribution optimization technologies without weakening the effect of other technologies. And has the advantages of simple installation, low cost and obvious energy-saving effect.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front cross-sectional configuration view of an embodiment of the present invention.
FIG. 2 is a view showing a distribution structure of air guide ducts.
Fig. 3 is a front view of the air guide duct.
Fig. 4 is a side view of the air guide duct.
Fig. 5 is a top view of the air guide duct.
In the figure, 1, an air guide pipe, 2, an air inlet module, 21, an oblique angle, 3, an air guide module, 31, an arc-shaped surface, 32, an embedded interface, 33, a vertical surface, 34, a right-angle plane, 35, a stiffening rib, 4, an air outlet module, 41, a rectangular pipe, 42, a rectangular outlet, 5, an installation groove, 6, a damping noise reduction pad, 7, a cooling tower, 71, a water spraying filling area, 72, a central area, 73, a water collecting tank, 74, water surface and 75 support columns are arranged.
Detailed Description
In the embodiment shown in fig. 1 and 2, a natural draft counter-flow cooling tower air guide pipe (1) comprises an air inlet module (2), an air guide module (3), an air outlet module (4), a mounting groove (5) and a damping noise reduction module (6). A plurality of air guide pipes (1) are arranged on the water surface of a water collecting pool (73) below a water spraying filler area (71) of a cooling tower (7), each air guide pipe (1) comprises 1 air inlet module (2), a plurality of air guide modules (3) and 1 air outlet module (4), the upper part of each air guide module (3) is an arc-shaped surface (31), the two sides of each air guide module are downward hanging surfaces (33), the bottom of each downward hanging surface (33) is below the working water surface (74) of the water collecting pool (73), and the height from the top of each arc-shaped surface (31) of each air guide module (3) to the working water surface (74) of the water collecting pool (73) is 35% of the height of an air inlet; air intake module (2), wind-guiding module (3) and air outlet module (4) inlay mutually and connect between support stand (75) in cooling tower (7), air intake module (2) are under trickle filler district (71) edge, air outlet module (4) are in trickle filler district (71) central zone (72), a plurality of air outlet modules (4) are with trickle filler district (71) center to the dispersion distribution all around, the total wind-guiding channel sectional area of a plurality of guide ducts (1) is greater than 5% of cooling tower (7) air intake effective area. The mounting grooves (5) are fixed on two side vertical surfaces between the inner support columns (75) in the cooling tower (7), and the inner support columns (75) are connected to form the through long air guide pipe (1) mounting groove (5).
In the embodiment shown in fig. 3, 4 and 5, the bottom of the vertical surface (33) of the air guide module (3) is a right-angle plane (34), a stiffening rib (35) is arranged between the vertical surface (33) and the right-angle plane (34), when the air guide module (3) is placed, the right-angle plane (34) is embedded into the mounting groove (5), and the right-angle plane (34) is movably matched with the bottom of the mounting groove (5).
Air intake module (2) upper portion arc chamfer (21) at the outer end on air guide module (3) basis become the air inlet end of outer low interior height, the chamfer angle is 45 degrees, the inner is for inlaying interface (32) mutually with air guide module (3).
Air outlet module (4) be rectangular pipe (41), the inner be with wind-guiding module (3) inlay interface (32) mutually, the interface part communicates with each other with the wind-guiding passageway of wind-guiding module (3), rectangular pipe (41) width is unanimous with wind-guiding module (4) width, rectangular pipe (41) height all around is unanimous with wind-guiding module (4) top height, rectangle export (42) area is greater than 20% of wind-guiding passageway sectional area, rectangular pipe (41) both sides and outer end bottom are infolding right angle plane (34), set up stiffening rib (35) between lower part and right angle plane (34).
When the radius of the water spraying filler area (71) is below 30m, the central area (72) of the water spraying filler area (71) is in the range of taking the midpoint of the cooling tower (7) as the center of a circle and the radius is 47% of the radius of the water spraying filler area (71). When the radius of the water spraying filler area (71) is more than 30m, the radius of the central area (72) of the water spraying filler area (71) is increased by 2% every time the radius is increased by 5 m.
When the air guide pipe (1) is made of an anticorrosive weather-resistant ultrathin material, the upper part of the air guide module (3) is provided with a damping noise reduction pad (6).
It will be appreciated that many variations may be made to the above-described embodiments without departing from the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a natural draft counterflow cooling tower guide duct, includes that air intake module, wind guide module, air outlet module, mounting groove, damping fall the pad of making an uproar, characterized by: a plurality of air guide pipes are arranged on the water surface of the water collecting tank below the water spraying filler area of the cooling tower, and each air guide pipe comprises 1 air inlet module, a plurality of air guide modules and 1 air outlet module; the upper part of the air guide module is an arc-shaped surface, two sides of the air guide module are drooping surfaces, the bottom of the drooping surface is below the working water surface of the water collecting pool, and the height from the top of the arc-shaped surface of the air guide module to the working water surface of the water collecting pool is 35% of the height of the air inlet of the cooling tower; the air inlet module, the air guide module and the air outlet module are embedded and connected between the inner supporting columns of the cooling tower, the air inlet module is arranged below the edge of a water spraying filler area, the air outlet module is arranged in the central area of the water spraying filler area, the air outlet modules are distributed in a dispersed mode from the center of the water spraying filler area to the periphery, and the total air guide channel sectional area of the air guide pipes is larger than 5% of the effective area of the air inlet of the cooling tower.
2. The natural draft counterflow cooling tower duct of claim 1, wherein: the mounting grooves are fixed on two side vertical surfaces between the inner supporting columns of the cooling tower and connected with a plurality of inner supporting columns to form a through long air guide pipe mounting groove.
3. The natural draft counterflow cooling tower duct of claim 1, wherein: the bottom of the vertical surface of the air guide module is a right-angle plane, a stiffening rib is arranged between the vertical surface and the right-angle plane, when the air guide module is placed, the right-angle plane is embedded into the mounting groove, and the right-angle plane is in movable fit with the bottom of the mounting groove.
4. The natural draft counterflow cooling tower duct of claim 1, wherein: the air inlet module is an upper arc-shaped chamfer angle of the outer end on the basis of the air guide module to form an air inlet end with a lower outer part and a higher inner part, the chamfer angle is 45 degrees, and the inner end of the air inlet module is an embedded interface with the air guide module.
5. The natural draft counterflow cooling tower duct of claim 1, wherein: the air outlet module be the rectangular pipe, the inner be with the embedded interface of wind-guiding module mutually, the interface part communicates with each other with the wind-guiding passageway of wind-guiding module, the rectangular pipe width is unanimous with the wind-guiding module width, the rectangular pipe height all around is unanimous with the wind-guiding module top height that goes out, the rectangle export area is greater than 20% of wind-guiding passageway sectional area, the rectangular pipe both sides and outer end bottom are interior book right angle plane, set up stiffening rib between lower part and the right angle plane.
6. The natural draft counterflow cooling tower duct of claim 1, wherein: when the radius of the water spraying filler area is below 30m, the central area of the water spraying filler area is in the range of taking the middle point of the cooling tower as the center of a circle and taking the radius of the water spraying filler area as 47 percent; when the radius of the water spraying filler area is more than 30m, the radius of the central area of the water spraying filler area is increased by 2% every time the radius is increased by 5 m.
7. The natural draft counterflow cooling tower duct of claim 1, wherein: when the air guide pipe is made of an anticorrosive weather-resistant ultrathin material, the upper part of the air guide module is provided with a damping noise reduction pad.
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| CN201811369891.2A CN111006519A (en) | 2018-11-17 | 2018-11-17 | Natural draft counterflow cooling tower air guide pipe |
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| CN201811369891.2A CN111006519A (en) | 2018-11-17 | 2018-11-17 | Natural draft counterflow cooling tower air guide pipe |
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| CN111006519A true CN111006519A (en) | 2020-04-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069488A (en) * | 1983-09-27 | 1985-04-20 | Ishikawajima Harima Heavy Ind Co Ltd | Cooling water tower |
| CN201392107Y (en) * | 2009-04-27 | 2010-01-27 | 济南达能动力技术有限责任公司 | Air duct used for fresh air supply in cooling tower |
| CN203605793U (en) * | 2013-10-16 | 2014-05-21 | 济南达能动力技术有限责任公司 | Cooling tower with air supplement tubes |
| CN107543447A (en) * | 2017-09-30 | 2018-01-05 | 华北电力大学（保定） | Cooling tower ventilation unit |
| CN209246727U (en) * | 2018-11-17 | 2019-08-13 | 厦门嘉达环保科技有限公司 | Natural ventilation counterflow cooling tower guide duct |
-
2018
- 2018-11-17 CN CN201811369891.2A patent/CN111006519A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069488A (en) * | 1983-09-27 | 1985-04-20 | Ishikawajima Harima Heavy Ind Co Ltd | Cooling water tower |
| CN201392107Y (en) * | 2009-04-27 | 2010-01-27 | 济南达能动力技术有限责任公司 | Air duct used for fresh air supply in cooling tower |
| CN203605793U (en) * | 2013-10-16 | 2014-05-21 | 济南达能动力技术有限责任公司 | Cooling tower with air supplement tubes |
| CN107543447A (en) * | 2017-09-30 | 2018-01-05 | 华北电力大学（保定） | Cooling tower ventilation unit |
| CN209246727U (en) * | 2018-11-17 | 2019-08-13 | 厦门嘉达环保科技有限公司 | Natural ventilation counterflow cooling tower guide duct |
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