CN113883919A - Novel eight claw cooling towers - Google Patents
Novel eight claw cooling towers Download PDFInfo
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- CN113883919A CN113883919A CN202111262744.7A CN202111262744A CN113883919A CN 113883919 A CN113883919 A CN 113883919A CN 202111262744 A CN202111262744 A CN 202111262744A CN 113883919 A CN113883919 A CN 113883919A
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- 238000001816 cooling Methods 0.000 title claims abstract description 90
- 210000000078 claw Anatomy 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 221
- 239000007921 spray Substances 0.000 claims abstract description 52
- 238000005507 spraying Methods 0.000 claims abstract description 38
- 238000003860 storage Methods 0.000 claims description 33
- 239000002184 metal Substances 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 abstract description 13
- 230000001105 regulatory effect Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000007710 freezing Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
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- 239000012530 fluid Substances 0.000 description 3
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- 239000003245 coal Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 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
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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
- F28F25/04—Distributing or accumulator troughs
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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
- 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
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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
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/50—Hydropower in dwellings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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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 novel eight-claw cooling tower which comprises a tower body, an air inlet, an exhaust window, a first damp and hot steam outlet, a second damp and hot steam outlet, a first negative pressure variable frequency fan, a second negative pressure variable frequency fan, an induced draft tube, a vertical shaft pipeline, a pressure pipeline, a first spray nozzle, a water pool, a raw water source pipeline, a water feeding pipeline, a second spray nozzle, a deep well pump and the like. Compared with the prior art, the invention has the advantages that: 1) the zero emission of the damp and hot steam is realized; 2) in summer, the dry and wet ball temperatures of the air inlet of the cooling tower are changed through spray cooling, and the air inlet amount is increased, so that the temperature of circulating water is reduced, and the cooling efficiency of the cooling tower is improved; 3) in winter, the air inlet amount of the air inlet of the cooling tower is automatically controlled by using cold air and temperature variation difference and using a spray icing automatic air regulating device, and the temperature of cooling water in day and night is controlled to operate in the best vacuum of the condenser under the condition of ensuring that a water spraying area is not iced no matter how the natural temperature is changed.
Description
Technical Field
The invention relates to a cooling tower of a power plant, which improves the cooling efficiency and realizes zero emission of damp and hot steam, in particular to a novel eight-claw cooling tower.
Background
The cooling tower is an important heat transfer and mass transfer device in the power generation process of a power plant, and the earliest reinforced concrete cooling tower in the world is proposed by scholars of the Ministry of mineral products in the Netherlands. In 1918, continuous efforts are made, and the hyperbolic rotating thin-shell cooling tower proposed by the device is finally realized. Such cooling towers were first used in the uk. The system is widely used in various countries since the 30 th of the 20 th century, and hyperbolic cooling tower groups are successively built in northeast compliant power plants and Fuxin power plants in China in the 40 th of the century. For a century. The structure and the heat exchange mode of the cooling tower are continued to be improved insubstantially. The cooling tower functions by heat and mass exchange. The heat of the high-temperature cooling water is dissipated into the atmosphere, and the temperature of the circulating cooling water is reduced. The cooling water effect of the tower mainly depends on the mixing and contact of cold and hot fluid in the tower, and the partial evaporation and self-cooling of the hot fluid are realized by the water vapor partial pressure difference between the two fluids.
The hyperbolic natural draft cooling tower can be divided into a tower barrel structure and a water spraying device. The tower barrel structure comprises a cooling tower water storage tank, a herringbone column cooling tower air inlet, a ventilating duct and the like; the water spraying device comprises a water distribution pipe, a water distribution groove, a splashing device, a water spraying filler, a dehydrator and the like. Whether the cooling tower can work well is a necessary condition for full load power generation and safe power generation, and the vacuum degree of a condenser can be ensured only if the cooling tower has enough cooling effect and provides enough cooling water for the condenser of the turbo generator set. The lower the temperature of the cooling water, the greater the work done by the equivalent amount of steam, and the higher the effective utilization rate. Whether the cooling tower can achieve due effect is an important condition whether the power generation can save coal, electricity, water and energy and reduce the power generation cost.
The tower barrel of the cooling tower has the functions of organizing air flow, forming natural draft, sucking cold air into the tower, discharging damp and hot steam in the tower to the high altitude in an organized manner, reducing the eddy current of the damp and hot steam, reducing ventilation resistance, and completing heat exchange of circulating water in the cooling tower in a heat transfer and evaporation mode.
The water distribution system of the cooling tower is that inlet water of the cooling tower flows through a vertical shaft through a pressure pipeline, is distributed to each water tank pipe, then forms water drops through a spraying device, and the water drops are sprayed onto the water spraying filler, and the water spraying filler has the function of enabling hot water entering the cooling tower to form a water film as much as possible so as to increase the contact area and the contact time of the water and the air and be beneficial to heat and mass exchange of the water and the air.
The change of the cooling amplitude of the cooling tower is completely determined by the natural temperature, the humidity and the wind speed, the actual temperature of the cooling water is greatly different from the designed optimal temperature in summer, and the heat exchange efficiency of the circulating cooling water is low due to the influence of natural environment condition factors and the technical loss. The technical problem to be solved by enterprises and scientific research institutions at home and abroad is puzzled.
In winter in northern cold areas, the ambient temperature can be reduced to-35 ℃, the daytime temperature difference is 15 ℃, cold air is too low, and the daily temperature difference is uncertain, so that circulating water is excessively cooled, and a water distribution system, a water spraying system and a filler device of a cooling tower are frozen and damaged. In order to prevent the circulating cooling tower from being excessively cooled and seriously frozen to damage equipment, the air inlet of the cooling tower of most units adopts a method of hanging a wind shield.
In europe, a multi-layer metal mesh ice curtain anti-freezing method is adopted in recent years to block cold air so as to reduce the air intake entering a cooling tower, thereby controlling the circulating cooling tower and auxiliary equipment thereof not to freeze and achieving the purpose of protecting the equipment. The air temperature change rule in winter is that the day is high and the night is low, so that the unit vacuum presents the trend of low day and high night, and the direction of the unit load change trend and high day and low night is opposite. In order to ensure the anti-freezing safety of the circulating cooling tower, the number of the suspended wind shields is the lowest ambient temperature in the later half night period of the load valley, the safe operation requirement when the vacuum of the unit is high is met, and the load rate of the unit is gradually increased along with the rise of the ambient temperature, so that the economic operation of the unit is not facilitated. The work of the suspended wind shield is greatly influenced by the wind direction and the wind speed of the weather, so that the requirement of adjusting at any time according to the change of the environmental temperature, the humidity and the load cannot be met.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: 1) the wet and hot steam is recycled with zero emission; 2) the circulating water cooling in summer is not influenced by the temperature and the humidity of the nature; 3) in cold winter in the north, the contradiction between the freezing damage of the cooling tower and the thermal efficiency of the steam turbine is solved, so that the production requirement is met.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a novel eight-claw cooling tower comprises a tower body, an air inlet, an exhaust window, a first damp and hot steam outlet, a second damp and hot steam outlet, a first negative pressure variable frequency fan, a second negative pressure variable frequency fan, an induced draft tube, a vertical shaft pipeline, a pressure pipeline, a first spray nozzle, a water pool, a raw water source pipeline and a water supply pipeline, the tower comprises a second spray nozzle, a circulating water outlet closed channel, a hydroelectric generator, a water storage tank, a deep well pump, a tower strut, a metal net, a third spray nozzle, a branch pipe pipeline, a first eight-claw air duct, an air cooling area, a second eight-claw air duct and a brim, wherein the top of the tower body is designed in a closed manner and is provided with three or more exhaust windows, a plurality of first damp-heat steam outlets are arranged on the wall of the tower body below the exhaust windows according to the exhaust amount, second damp-heat steam outlets are arranged on two sides of the first damp-heat steam outlet, the lower part of the second damp-heat steam outlet on one side is connected with the water storage tank through the first eight-claw air duct, and the lower part of the second damp-heat steam outlet on the other side is connected with a water tank through the second eight-claw air duct; a negative pressure variable frequency fan II is arranged below the first damp and hot steam outlet, a pressure pipeline is arranged below the negative pressure variable frequency fan II, a plurality of first spray nozzles are additionally arranged at the lower part of the pressure pipeline, a vertical shaft pipeline inserted into the water storage tank is connected to the bottom of the pressure pipeline below the negative pressure variable frequency fan II, and an induced draft tube is additionally arranged on a connecting pipeline of the pressure pipeline and the vertical shaft pipeline;
tower pillars are arranged at two ends of the tower body, a metal net is additionally arranged on the side part of the tower pillar at one end, a branch pipe is arranged on one side of the metal net, the side part of the branch pipe is connected with a plurality of spray nozzles III, and the end part of the branch pipe is connected with a deep well pump inserted into the water storage tank; an air inlet is formed in the tower support at the other end, a water feeding pipeline with a second spray nozzle on the side part is arranged on the side part of the tower support, a raw water source pipeline is connected to the end part of the water feeding pipeline, and an air cooling area is formed between the air inlet and the water feeding pipeline;
one side of the water storage pool is connected with a circulating water outlet closed channel, and a hydroelectric generator is arranged at the circulating water outlet closed channel.
Compared with the prior art, the invention has the advantages that: 1) the zero emission of the damp and hot steam is realized; 2) in summer, the dry and wet ball temperatures of the air inlet of the cooling tower are changed through spray cooling, and the air inlet amount is increased, so that the temperature of circulating water is reduced, and the cooling efficiency of the cooling tower is improved; 3) in winter, the air inlet amount of the air inlet of the cooling tower is automatically controlled by using cold air and temperature variation difference and using a spray icing automatic air regulating device, and the temperature of cooling water in day and night is controlled to operate in the best vacuum of the condenser under the condition of ensuring that a water spraying area is not iced no matter how the natural temperature is changed.
As an improvement, after the first negative pressure variable frequency fan works, the damp and hot steam enters the water pool connected with the eight-claw air duct II from the first damp and hot steam outlet and is mixed with water to be distributed for use.
As an improvement, when the first negative pressure variable frequency fan works in winter, working is performed to suck steam in the outlets of the second wet and hot steam outlets, and the steam is discharged into a water storage tank connected with the first eight-claw air duct and mixed with water for recycling.
As an improvement, high-temperature circulating water in the vertical shaft pipeline is distributed into a plurality of branch pipelines of the pressure pipeline, is sprayed out by the first spray nozzle, and enters the water storage tank after conduction and evaporation are completed in the falling process.
The air inlet is externally provided with a brim, a water supply pipeline is arranged on the lower portion of the brim and connected with a raw water source pipeline, a second spray nozzle on the water supply pipeline adopts inward and multi-layer spraying to reduce blind areas so as to enlarge an air cooling area, and a negative pressure area generated by a second negative pressure variable frequency fan passes through the air inlet and reaches the negative pressure area from a water spraying area through an air draft tube.
As an improvement, a circle of metal net is arranged below the outer brim of the cap of the air inlet of the tower support, a spraying mechanism consisting of three spraying nozzles is arranged on the outer side of the metal net, a deep well pump in the water storage tank provides water source, the water source flows through a branch pipeline to be distributed to each spraying nozzle three, atomized water is sprayed out, and the atomized water falls on the metal net to form an ice film with apertures.
As improvement, the automatic control system of the novel eight-claw cooling tower adopts an intelligent temperature controller which mainly comprises a temperature sensor, a time relay, an ice film thickness regulator and an alternating current contactor connected with a water pump motor, the temperature of circulating water is detected through the sensor, a lower limit is set for starting, an upper limit is stopped, when the temperature of circulating water reaches the lower limit, the intelligent temperature controller is connected with a power supply according to a program instruction, the time relay is used for timing, and the water pump is started to run.
Drawings
FIG. 1 is a schematic structural diagram of a novel eight-claw cooling tower.
As shown in the figure: 1. the tower comprises a tower body, 2, an air inlet, 3, an exhaust window, 4, a first damp and hot steam outlet, 5, a second damp and hot steam outlet, 6, a first negative pressure frequency conversion fan, 7, a second negative pressure frequency conversion fan, 8, an induced draft tube, 9, a vertical shaft pipeline, 10, a pressure pipeline, 11, a first spray nozzle, 12, a water pool, 13, a raw water source pipeline, 14, a water feeding pipeline, 15, a second spray nozzle, 16, a circulating water outlet blind channel, 17, a hydroelectric generator, 18, a water storage pool, 19, a deep well pump, 20, a tower support, 21, a metal net, 22, a third spray nozzle, 23, a branch pipeline, 24, a first eight-claw air duct, 25, an air cooling area, 26, a second eight-claw air duct, 27 and a brim.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention is implemented in a concrete way, the novel eight-claw cooling tower comprises a tower body 1, an air inlet 2, an exhaust window 3, a first damp and hot steam outlet 4, a second damp and hot steam outlet 5, a first negative pressure frequency conversion fan 6, a second negative pressure frequency conversion fan 7, an induced draft tube 8, a vertical shaft pipeline 9, a pressure pipeline 10, a first spray nozzle 11, a water pool 12, a raw water source pipeline 13, a water feeding pipeline 14, a second spray nozzle 15, a circulating water outlet closed channel 16, a hydroelectric generator 17, a water storage tank 18, a deep well pump 19, a tower strut 20, a metal mesh 21, a third spray nozzle 22, a branch pipeline 23, a first eight-claw air channel 24, an air cooling area 25, a second eight-claw air channel 26 and a cap peak 27, wherein the top of the tower body 1 is designed in a closed way and is provided with three or more exhaust windows 3, a plurality of first damp and hot steam outlets 4 are arranged on the wall of the tower body 1 below the exhaust windows 3 according to the exhaust amount, and two sides of the first damp and hot steam outlets 4 are provided with the second damp and hot steam outlets 5, the lower part of the second damp and hot steam outlet 5 at one side is connected with a water storage tank 18 through an eight-claw air duct I24, and the lower part of the second damp and hot steam outlet 5 at the other side is connected with a water tank 12 through an eight-claw air duct II 26; a negative pressure frequency conversion fan II 7 is arranged below the wet and hot steam outlet I4, a pressure pipeline 10 is arranged below the negative pressure frequency conversion fan II 7, a plurality of spray nozzles I11 are additionally arranged on the lower portion of the pressure pipeline 10, a vertical shaft pipeline 9 inserted into a water storage tank 18 is connected to the bottom of the pressure pipeline 10 below the negative pressure frequency conversion fan II 7, and an air inducing duct 8 is additionally arranged on a connecting pipeline of the pressure pipeline 10 and the vertical shaft pipeline 9;
two ends of the tower body 1 are provided with tower struts 20, the side part of the tower strut 20 at one end is additionally provided with a metal net 21, one side of the metal net 21 is provided with a branch pipe 23, the side part of the branch pipe 23 is connected with a plurality of spray nozzles III 22, and the end part of the branch pipe 23 is connected with a deep well pump 19 inserted into a water storage tank 18; an air inlet 2 is formed in the tower support column 20 at the other end, a water feeding pipeline 14 with a second spray nozzle 15 at the side part is arranged on the side part of the tower support column 20, a raw water source pipeline 13 is connected to the end part of the water feeding pipeline 14, and an air cooling area 25 is formed between the air inlet 2 and the water feeding pipeline 14;
one side of the water storage tank 18 is connected with a circulating water outlet underdrain 16, and a hydroelectric generator 17 is arranged at the circulating water outlet underdrain 16.
After the negative pressure variable frequency fan I6 does work, the damp and hot steam enters the water pool 12 connected with the eight-claw air duct II 26 from the damp and hot steam outlet I4 and is mixed with water to be distributed for use.
When the negative pressure variable frequency fan I6 works in winter, working is performed to suck steam in the outlet of the damp and hot steam outlet II 5, and the steam is discharged into the water storage tank 18 connected with the eight-claw air duct I24 and mixed with water for recycling.
The high-temperature circulating water in the vertical shaft pipeline 9 is distributed into a plurality of branch pipelines of the pressure pipeline 10, is sprayed out through the first spray nozzle 11, and enters the water storage tank 18 after conduction and evaporation are completed in the falling process.
The air inlet 2 is externally provided with a cap brim 27, a circle of water feeding pipeline 14 is arranged below the cap brim 27 and is connected with the raw water source pipeline 13, the second spray nozzles 15 on the water feeding pipeline 14 adopt inward and multilayer spray to reduce blind areas so as to enlarge the air cooling area 25, and a negative pressure area generated by the second negative pressure variable frequency fan 7 through the air inlet 2 reaches the negative pressure area from a water spraying area through the air draft tube 8.
A circle of metal net 21 is arranged below the outer brim 27 of the air inlet 2 of the tower support 20, a spraying mechanism consisting of three spraying nozzles 22 is arranged outside the metal net 21, a water source is provided by a deep well pump 19 in the water storage tank 18, flows through a branch pipeline 23, is distributed to each spraying nozzle three 22, sprays atomized water, and falls on the metal net 21 to form an ice film with apertures.
The automatic control system of the novel eight-claw cooling tower adopts an intelligent temperature controller, mainly comprises a temperature sensor, a time relay, an ice film thickness regulator and an alternating current contactor connected with a water pump motor, detects the temperature of circulating water through the sensor, sets a lower limit to start, stops an upper limit, and when the temperature of the circulating water reaches the lower limit, the intelligent temperature controller is connected with a power supply according to a program instruction, the time relay times and the water pump starts to run.
The working principle of the invention is as follows: the scheme is a novel eight-claw cooling tower, the structure of which comprises a tower body, an eight-claw air cylinder, a negative pressure variable frequency fan, a tower body pillar (air inlet), a water storage tank, a pressure pipeline, an induced air cylinder, a spraying system, a metal mesh and the like, and an automatic control system such as a spray cooling device, a spray freezing automatic air adjusting device and the like are installed outside the air inlet.
The principle of the scheme is that the method is not influenced by the temperature change of dry air and wet air balls of natural air, the wet and hot steam evaporated after heat exchange of circulating water is organized into airflow by a negative pressure variable frequency fan to form stable suction force, cold air is sucked into the tower from an air inlet, the wet and hot steam in the tower is orderly organized and is discharged into a water pool through an eight-claw air cylinder to be mixed with water for reuse, and the wet and hot steam is directly connected into a water storage pool in winter to be mixed with cooling water for recycling.
Wherein: 1) circulating water spraying system: the spray nozzle is input by pressure of a closed vertical shaft through a pressure pipeline in a direct injection mode, sprayed atomized water drops are preferably 300-800 microns in diameter, the water drops fully contact with surrounding cold air in the falling process, heat exchange is completed in modes of evaporation conduction, convection and the like, and meanwhile, no noise exists.
2) An induced draft tube: the negative pressure variable frequency fan is positioned at the top of the vertical shaft, a negative pressure area generated during work doing is covered at the lower part by an air duct with full apertures, and the negative pressure variable frequency fan has the function of sucking cold air entering a tower into an air inducing duct through rapid horizontal movement of a water spraying area, so that the air speed is improved, the air quantity is increased, the uniform air inlet of the whole circumference of the water spraying area is realized, and the effect of doubling the cooling efficiency of circulating water with half the effort is realized.
3) The spray cooling system: a water circulation pipeline is arranged and installed below a cap peak outside an air inlet of an eight-claw cooling tower, a spray nozzle is installed on the water pipeline, low-temperature water is used as an air coolant in summer, the low-temperature water is sprayed out of the spray nozzle and atomized into tiny water drops, the flow rate is high, the cold and warm temperature difference meets, air source is generated by disturbed air movement, an air cooling area is formed in the spray area, air outside the cooling area continuously enters, the tiny water drops continuously absorb heat, the temperature of higher air is reduced through a spray cooling area, then the air and water mist enter the tower in a double-flow mode, conditions are created for circulating water cooling by exciting low-temperature cold air into artificial mist in a floating state by one kilogram of water, the obtained effect is equal to that seven kilograms of ice are dissolved, the cooling effect can reach 6-10 ℃, the temperature can be reduced to 14 ℃ under extreme conditions, and low-temperature water sprayed by the spray nozzle is supplied by a cooling tower for supplementing raw water source, distributing a water circulation pipeline to each branch pipeline, and finally spraying the water through a spray nozzle, wherein the coverage area of sprayed low-temperature atomized water drops reaches more than 95% of the area of an air inlet of the cooling tower. The total amount of atomized water is less than the total amount of water consumed by evaporation.
4) In winter in cold areas in the north, the automatic air regulating device for spraying and freezing is adopted, so that the circulating water temperature meets the requirement of the condenser on the 'best' vacuum degree in real time.
The automatic air regulating device for spraying and freezing is characterized in that a metal net is used for enclosing and blocking an air inlet of a cooling tower, a spraying device is installed below a brim outside the metal net, a nozzle of the spraying device is connected with a water pump in a water storage tank through a water conveying pipeline, the water pump is controlled and started by an intelligent temperature controller, the water spraying direction of the nozzle is outward, and the back face of the nozzle faces towards the metal net. The water source of the spray is from cooling water in a circulating water storage tank, and the cooling water is pumped into a water conveying pipeline by a water pump and is supplied to the spray nozzle. Under a certain pressure, the water drops are sprayed out from the nozzle to form particle water drops, the water drops and cold air move in a reverse direction to disturb air, the water drops decompose particles uniformly, drift and scatter on a framework of the metal mesh, and the particles are gradually condensed to form an ice film with apertures under the action of the cold air, so that the apertures of the metal mesh are gradually reduced, the air intake is reduced, and the temperature of circulating water is increased. The water pump stops, spraying stops immediately, and the stored water in the pipeline automatically overflows by the deep well pump. The pore diameter of the ice film is slowly sublimated in the natural temperature change rising process and when wind enters the tower through the pore diameter of the ice film, the air inlet amount is increased, and when the temperature is reduced, water is automatically supplied and sprayed to form a new icing and sublimation process, so that the temperature of the circulating cooling water is kept in the optimal temperature range for operation.
The automatic control system adopts an intelligent temperature controller, mainly comprises a temperature sensor, a time relay, an ice film thickness regulator and an alternating current contactor connected with a water pump motor, detects the temperature of circulating water through the sensor, sets a lower limit to start, and stops an upper limit. When the temperature of the circulating water reaches the lower limit, the intelligent temperature controller is connected with a power supply according to a program instruction, a time relay is used for timing, and the water pump is started to operate.
The water pump automatically stops when the upper limit of the set temperature is reached
The automatic air regulating device for spraying and icing utilizes three resources in the nature: 1) water, circulating water of the cooling tower reservoir; 2) wind, cold air in winter; 3) negative pressure, temperature changes and draft in the column. The periodic formation of the aperture of the ice film follows the three-state change rule of water, and the air inlet quantity entering the tower is automatically regulated and matched with the change of the environmental temperature from the conversion process of liquid state, solid state and vapor state, which is to use an advanced technical method to deal with the disordered change of natural conditions in different areas. Scientifically, reasonably and orderly combined, uncontrollable factors become available resources, and the complex problem is practically checked to be broken into whole parts, so that the accurate and controllable circulating water temperature is really realized. The three technical indexes are completed to form the high-efficiency energy-saving cooling tower.
Example (b):
an eight-claw cooling tower is built, the top of the tower is closed, and a plurality of safety exhaust windows are reserved. The scheme is characterized in that a damp-heat steam outlet is arranged on the wall of the tower body according to the exhaust amount, and after the negative pressure variable frequency fan does work, damp-heat steam enters from the damp-heat steam outlet, passes through an eight-claw air channel, is connected with a water tank, and is mixed with water to be distributed for use. In winter, the negative pressure variable frequency fan applies work to suck steam in the 5 damp and hot steam outlets, and the steam is discharged into the eight-claw air duct to be connected with the water storage tank to be mixed with water for recycling.
1) Spray system embodiment: high-temperature circulating water flows through a vertical shaft pipeline (the top is sealed), is distributed to branch pressure pipelines, is sprayed out by a spray nozzle, and enters a water storage tank after being conducted and evaporated in the falling process. The wet and hot steam rises and is led into the eight-claw air duct through the negative pressure frequency conversion fan to be discharged into the water tank to be mixed with water.
2) Summer spray cooling implementation scheme: a circle of water supply pipeline is arranged below the outer brim of a hat of an air inlet of the cooling tower and is connected with a raw water source pipeline, the water supply pipeline is provided with a spray nozzle, inward and multilayer spray is adopted to reduce blind areas so as to expand an air cooling area, and a negative pressure area induced draft tube generated by a 7 negative pressure variable frequency fan passes through the air inlet and reaches the negative pressure area through a water spraying area.
3) The automatic air regulating device for spray icing: a circle of metal net is arranged below the outer brim of an air inlet of an eight-claw cooling tower support, a spraying system is arranged on the outer side of the metal net, a water source provided by a deep well pump in a water storage pool flows through a branch pipe and is distributed to a spraying nozzle to spray atomized water, and the atomized water is sprayed on the metal net to form an ice film with apertures.
4) The automatic control system is programmed and completed by pLc. All power electricity of the eight-claw cooling tower is from a circulating water outlet closed channel, and a hydroelectric generator is installed.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless explicitly specifically defined otherwise.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (7)
1. The utility model provides a novel eight claw cooling towers, including tower body (1), air intake (2), exhaust window (3), damp and hot steam outlet (4), damp and hot steam outlet two (5), negative pressure frequency conversion fan (6), negative pressure frequency conversion fan two (7), induced draft tube (8), shaft pipeline (9), pipeline under pressure (10), fog nozzle (11), pond (12), former water supply pipeline (13), water supply pipeline (14), fog nozzle two (15), circulating water export hidden canal (16), hydroelectric generator (17), water storage pool (18), deep-well pump (19), tower pillar (20), metal mesh (21), fog nozzle three (22), branch pipe way (23), eight claw wind channel one (24), air cooling district (25), eight claw wind channel two (26), brim of a hat (27), its characterized in that: the top of the tower body (1) is designed in a closed manner and is provided with three or more exhaust windows (3), a plurality of first damp and hot steam outlets (4) are arranged on the wall of the tower body (1) below the exhaust windows (3) according to the exhaust amount, two sides of each first damp and hot steam outlet (4) are provided with a second damp and hot steam outlet (5), the lower part of each second damp and hot steam outlet (5) on one side is connected with a water storage tank (18) through a first eight-claw air duct (24), and the lower part of each second damp and hot steam outlet (5) on the other side is connected with a water tank (12) through a second eight-claw air duct (26); a negative pressure frequency conversion fan II (7) is arranged below the wet and hot steam outlet I (4), a pressure pipeline (10) is arranged below the negative pressure frequency conversion fan II (7), a plurality of spray nozzles I (11) are additionally arranged on the lower portion of the pressure pipeline (10), a vertical shaft pipeline (9) inserted into a water storage tank (18) is connected to the bottom of the pressure pipeline (10) below the negative pressure frequency conversion fan II (7), and an air inducing duct (8) is additionally arranged on a connecting pipeline of the pressure pipeline (10) and the vertical shaft pipeline (9);
two ends of the tower body (1) are provided with tower pillars (20), the side part of one end of each tower pillar (20) is additionally provided with a metal net (21), one side of each metal net (21) is provided with a branch pipe (23), the side part of each branch pipe (23) is connected with a plurality of spray nozzles III (22), and the end part of each branch pipe (23) is connected with a deep well pump (19) inserted into the water storage tank (18); an air inlet (2) is formed in the tower support (20) at the other end, a water feeding pipeline (14) with a second spray nozzle (15) on the side portion is arranged on the side portion of the tower support (20), a raw water source pipeline (13) is connected to the end portion of the water feeding pipeline (14), and an air cooling area (25) is formed between the air inlet (2) and the water feeding pipeline (14);
one side of the water storage tank (18) is connected with a circulating water outlet closed channel (16), and a hydroelectric generator (17) is arranged at the circulating water outlet closed channel (16).
2. The novel eight-claw cooling tower of claim 1, wherein: after the negative pressure variable frequency fan I (6) does work, the damp and hot steam enters the water pool (12) connected with the eight-claw air duct II (26) from the damp and hot steam outlet I (4) and is mixed with water to be distributed for use.
3. The novel eight-claw cooling tower of claim 1, wherein: when the negative pressure variable frequency fan I (6) works in winter, working is performed to suck steam in the outlet of the damp and hot steam outlet II (5), and the steam is discharged into a water storage tank (18) connected with the eight-claw air duct I (24) and mixed with water for recycling.
4. The novel eight-claw cooling tower of claim 1, wherein: high-temperature circulating water in the vertical shaft pipeline (9) is distributed into a plurality of branch pipelines of the pressure pipeline (10), is sprayed out through the first spray nozzle (11), and enters the water storage tank (18) after conduction and evaporation are completed in the falling process.
5. The novel eight-claw cooling tower of claim 1, wherein: the air inlet (2) is externally provided with a cap peak (27), a water supply pipeline (14) of a circle is installed below the cap peak (27) and is connected with a raw water source pipeline (13), a second spray nozzle (15) on the water supply pipeline (14) adopts inward and multilayer spraying to reduce blind areas so as to expand an air cooling area (25), and a negative pressure area generated by a second negative pressure frequency conversion fan (7) through the air inlet (2) reaches the negative pressure area from a water spraying area through an air draft tube (8).
6. The novel eight-claw cooling tower of claim 1, wherein: a circle of metal net (21) is installed below an outer brim (27) of an air inlet (2) of the tower support (20), a spraying mechanism consisting of three spraying nozzles (22) is arranged on the outer side of the metal net (21), a deep well pump (19) in a water storage tank (18) provides water source, the water source flows through a branch pipe (23) to be distributed into each spraying nozzle (22) and spray atomized water, and the atomized water is sprayed onto the metal net (21) to form an ice film with apertures.
7. The novel eight-claw cooling tower of claim 1, wherein: the automatic control system of the novel eight-claw cooling tower adopts an intelligent temperature controller, mainly comprises a temperature sensor, a time relay, an ice film thickness regulator and an alternating current contactor connected with a water pump motor, detects the temperature of circulating water through the sensor, sets a lower limit to start, stops an upper limit, and when the temperature of the circulating water reaches the lower limit, the intelligent temperature controller is connected with a power supply according to a program instruction, the time relay times and the water pump starts to run.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2230950A1 (en) * | 1973-05-24 | 1974-12-20 | Air Traitement Cie Internale | Cooling water by evaporation and heat transfer - avoids local condensation and fogging by spreading heat load |
| CN1740726A (en) * | 2005-03-18 | 2006-03-01 | 张富华 | Fast spraying freezing coldproof method |
| CN102466416A (en) * | 2011-12-19 | 2012-05-23 | 张富华 | Temperature regulation method for cooling tower |
| CN206709644U (en) * | 2017-04-11 | 2017-12-05 | 吴涛 | The automatic frigid-proof device of inverse spraying icing |
-
2021
- 2021-10-28 CN CN202111262744.7A patent/CN113883919A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2230950A1 (en) * | 1973-05-24 | 1974-12-20 | Air Traitement Cie Internale | Cooling water by evaporation and heat transfer - avoids local condensation and fogging by spreading heat load |
| CN1740726A (en) * | 2005-03-18 | 2006-03-01 | 张富华 | Fast spraying freezing coldproof method |
| CN102466416A (en) * | 2011-12-19 | 2012-05-23 | 张富华 | Temperature regulation method for cooling tower |
| CN206709644U (en) * | 2017-04-11 | 2017-12-05 | 吴涛 | The automatic frigid-proof device of inverse spraying icing |
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