CN101776400A - Forced-draft direct water film evaporative air-cooling condensor system - Google Patents
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Abstract
The invention discloses a forced-draft direct water film evaporative air-cooling condenser system, which comprises a forced-draft direct water film evaporative air-cooling cluster condenser and a central water treatment device. Dead steam out of a steam turbine flows and emits heat in a condenser tube and is condensed into water for exhaust. Water forms a water film out of the tube and forced draft sweeps over the water film. The heat of the dead steam is absorbed by the water film and the water film transmits sensible heat and water film evaporation latent heat to flowing air. After falling into a water tank, the water is pumped to the upper part of a tube bank for recycling. The cluster condenser is arranged outdoors and is properly raised, wherein every two condensers can be arranged back to back in a group, and an air inlet shutter is properly heightened, and the blades of the shutter are designed into different angles of inclination. The forced-draft direct water film evaporative air-cooling condenser system consumes a certain quantity of evaporation water and obviously improves thermal circulation efficiency, and can overcome the defect that the high-temperature environment by the direct dry air-cooled condensing mode cannot be met. The condensing temperature is lower than that of the water-cooling condensing mode, a cooling tower can be saved, and the water consumption can be reduced. The forced-draft direct water film evaporative air-cooling condenser system is applied to regions where water is insufficient and water-saving requirement is more and more strict.
Description
Technical field
The present invention relates to the Steam Power Circulation of Turbo-generator Set such as the power plant for self-supply of thermoelectricity, nuclear power, flow process fourth industry or cogeneration, be specifically related to a kind of condensing system that adopts the direct water film evaporation air cooling of forced ventilation.
Background technology
The Steam Power Circulation of Turbo-generator Set such as thermoelectricity, nuclear power (also claiming Rankine cycle) changes steam thermal energy into mechanical energy, changes mechanical energy into electric energy again.As shown in Figure 1, the area that the Rankine cycle line surrounds on the tephigram is the mechanical energy that steam thermal energy can transform output.Why being called circulation, is because the cycle of states process that steam condition will pass through high temperature and high pressure steam → low temperature and low pressure steam → low-temp low-pressure water → cryogenic high pressure water → high temperature and high pressure steam.So the low temperature and low pressure steam (abbreviation exhaust steam) that steam turbine is discharged need be condensed into low-temp low-pressure water earlier, but and then pump into the high temperature and high pressure steam that boiler becomes work done again.Condensation need be to the cooling medium heat release in condenser in exhaust steam, and different cooling mediums can constitute the different types of cooling or cooling system with different gas equipment with fixed attention.
Common water condensation way of steam is, recirculated cooling water heat of exhaust steam outside the partition convection current absorption tube in condenser tube drenches in the cooling tower and forms moisture film on the filler, and moisture film directly contacts with air, and heat is passed to air by convection current and evaporation mode.Water-cooled condenser volume is less, and the condensing temperature is lower and more stable, help generating set and exert oneself, but quantity of circulating water is big, and water consumption is also big.Such water-cooling pattern is also referred to as clammy mode in power industry.
The direct dried air cooling condensing mode of promoting the use of in the water shortage in north china area at present is, air flows outside finned tube under the air blast effect, and the heat of exhaust steam in the absorption tube, and hot blast is directly arranged to atmosphere.The direct air cooling system volume is big, and the condensing temperature is higher and be subject to climatic effect, and generating set is exerted oneself less, and station service power consumption rate is than water-cooled height, but can significantly economize on water.
Except above water-cooled and two kinds of basic condensing modes of Direct Air-Cooled, also have following condensing mode:
(1) direct-contact type condenser indirect air cooling system (being called for short Hai Leshi)
Cooling water in the system is highly purified neutral water, neutral cooling water enters that injection type condenser directly mixes with exhaust steam and with the exhaust steam condensation, the cooling water overwhelming majority after being heated is pumped to the air cooling tower radiator, and by the pressure regulation hydraulic turbine cooling water is sent into condenser once more behind the air partition heat convection; The few part of cooling water after being heated is delivered to the steam turbine regenerator through after the precision processing, pumps into the boiler heating again.Use the Steam Turbine annual back pressure of Hai Leshi indirect air cooling system to be lower than Direct Air-cooled Unit, coal consumption is lower.But recirculated cooling water feeds water with the boiler master and mixes, and the condensate water accurate process equipment need be set, and makes complex system.And this system adopts the radiator of full aluminum, and frost resistance is relatively poor.This system generally is used for the following generating set of 200MW, and is general supporting with middle back pressure turbine.
(2) surface condenser indirect air cooling system (being called for short the Harmon formula)
In this system, after the recirculated cooling water that water-cooled condenser (also claiming surface condenser) comes out enters cooling tower, directly do not contact with air, but the dividing wall type heat exchanger that enters into cooling tower is passed to air with heat, promptly recirculated cooling water is closed operation.The outstanding advantage of Harmon formula indirect air cooling system is water saving, and cooling water system separates with main feed system, and water quality can be by requirement control separately; But condenser terminal difference is bigger than water-cooled, unit coal consumption height, and have more a cover heat exchange equipment, investment is many.
(3) adopt in parallel just, the indirect air cooling system (it is just contrary circulating to be called for short parallel connection) of the working medium of contrary kind of refrigeration cycle
In this system, the cooling medium that surface condenser uses is cold-producing mediums commonly used such as ammonia.When environment temperature was higher, refrigerant liquid absorbed the exhaust steam heat and becomes refrigerant vapour in condenser, boosted through the small turbine compressor driven again, became liquid to the air cooler cooling, arrived the condenser heat absorption after throttling expansion again.The cold-producing medium evaporating temperature is enough low, can effectively reduce the condensing temperature, satisfies the normal power generation requirement.Except the steam thermodynamic cycle, also has the thermodynamic cycle of cold-producing medium in the system, because compressor has consumed external work in the cold-producing medium thermodynamic cycle, so claim positive kind of refrigeration cycle.
When environment temperature was low, refrigerant liquid absorbed the exhaust steam heat and becomes refrigerant vapour in condenser, again through the decompressor decompression, became liquid to the air cooler cooling, was pumped into the condenser heat absorption again.At this moment, system utilizes the enthalpy difference of cold-producing medium between condensing temperature and the environment exothermic temperature, makes decompressor drive the small generators generating, thus the thermodynamic cycle of cold-producing medium can externally do work, so title is against kind of refrigeration cycle.
Adopt in parallel just, the indirect air cooling system of the working medium of contrary kind of refrigeration cycle except the indirect air cooling water saving, the condensing temperature was enough low when its outstanding advantage was that environment temperature is high, unit still can completely be sent out; And when environment temperature is hanged down, also can be multiple.But the equipment that this system increases will make complex system, and initial cost will obviously be increased.
Summary of the invention
The invention provides Steam Power Circulation generatings such as a kind of power plant for self-supply that is used for thermoelectricity, nuclear power, process industry or cogeneration, adopt force ventilated direct water film evaporative air-cooling condensor system.This system body is direct water film evaporation air cooling tubes condenser, comprises the interior exhaust steam condensation flow process of pipe of sealing and the outer water film evaporation heat transfer flow process of pipe that atmosphere is opened wide.
The reason that the present invention is referred to as forced-draft direct water film evaporative air-cooling condensor system has two: one, the present invention is similar to direct dried air cooling condensing mode part and is the condenser forced ventilation.Its two, in the water condensation way of steam, the exhaust steam heat release is in condenser, water film evaporation is in cooling tower; And water film evaporation of the present invention directly carries out in condenser.
Learn by the Rankine cycle theory, promote the HTHP line of Rankine cycle, can enlarge the area that circular route surrounds, can improve the efficient of Steam Power Circulation.Overcritical or the ultra supercritical thermal power generation unit of promoting at present is the generating efficiency height why, is because along with the breakthrough of exotic material technology and the progress of correlation technique, and the HTHP line that promotes Rankine cycle has had may.
Also can learn by the Rankine cycle theory, reduce the low-temp low-pressure line of Rankine cycle, also can enlarge the area that circular route surrounds, also can improve the efficient of Steam Power Circulation.The present invention that Here it is improves the main theory foundation of generating efficiency.
Consider the width restriction of highway or railway transportation, the direct water film evaporation air cooling tubes condenser of separate unit is general wide 3 meters.According to the size of steam turbine generator pool-size and the size of exhaust steam condensation heat load, many direct water film evaporation air cooling tubes condenser clusters can be installed and constitute forced-draft direct water film evaporative air-cooling condensor system, the configurable central water treating apparatus of cluster condenser and a small pump.For the less occasion of exhaust steam condensation heat such as afterheat steam power cycle load, forced-draft direct water film evaporative air-cooling condensor system can only have a condenser.
The exhaust steam of coming out from steam turbine is sent into the import bobbin carriage or the header of each direct water film evaporation air cooling tubes condenser through distribution duct, distributes through bobbin carriage or header to enter in the pipe of heat-exchanging tube bundle again.The pipe of heat-exchanging tube bundle can be that the cross section is the surface light slip pipe of circle, ellipse or rectangle, also can be rough corrugated tube, grooved pipe etc.The pipe arrangement mode is generally cross arrangement, also can smooth-goingly arrange.Water pump in the condenser water tank is delivered in the trickle distributor of tube bank top, drenches from top to bottom again, forms moisture film outside pipe.Condenser is furnished with the air-introduced machine forced ventilation.Manage outer moisture film exhaust steam heat in the absorption tube in the process of flowing from top to bottom, water film temperature is raise.The air of forced flow skims over moisture film, with the moisture film heat convection; Simultaneously, because the moving air water capacity does not reach saturatedly, enter air so the hydrone of water film surface can evaporate, and be discharged to atmosphere with the wind.When environment temperature is lower than exhaust steam temperature, the heat convection amount can be bigger; When environment temperature is lessly or basic quite the time lower than exhaust steam temperature, the evaporation heat transfer amount can be bigger.
After a small amount of trickle evaporation, most of trickle is fallen in the water tank of condenser bottom, and water tank is equipped with overflow pipe, blow-off pipe and filling pipe.The purpose of blowdown is that the impurity concentration in the control trickle is not too high, in order to avoid aggravation fouling and corrosion.The water that overflows in each condenser water tank is pooled to the central water treating apparatus.The central water treating apparatus will be according to heat exchange tube material requirement for anticorrosion and source quality, and that trickle that overflow is compiled and the new water that replenishes carry out is anticorrosion, scale removal and algae removal are handled.Trickle after the processing is delivered to the water tank of each condenser by small pump and water pipe.
Leave intake between each condenser of the direct water film evaporation air cooling tubes condenser of forced ventilation cluster; Also can install back-to-back by two platform condensers, leave intake between each pair platform condenser.The direct water film evaporation air cooling tubes condenser of forced ventilation cluster platform is located at outdoor, and suitably the frame height be the wind comes from smooth and easy to guarantee each condenser.
The top of cluster type condenser leads directly to atmosphere, and other structures that do not have stop air draft.Cluster type condenser condensed water outlet bobbin carriage or header are higher than the inlet of condensate pump, so that condensate water enters condensate pump.The heat exchanger tube of cluster type condenser can be with copper pipe or stainless steel tube, because precision processing had been done in main feedwater, so heat exchanger tube need not be equipped with the interior ball cleaning apparatus of pipe.
Under the effect of air-introduced machine, moving air skims over the outer moisture film of heat-exchanging tube bundle through the shutter air intake, absorbs sensible heat and latent heat that moisture film transmits, passes the water collection device of trickle distributor top again, is arranged to atmosphere by blower fan.Air inlet adopts the shutter and the deflector of top rade, and it both can make trickle still get back to water tank, can make air intake reduce resistance again, and smooth-going up arrival restrained.Water collection device compound wave mode made of plastic or honeycomb type are efficiently received water and can be significantly reduced water smoke and blow out, and avoid water smoke to descend slowly and lightly and cause corrosion near equipment, also can alleviate the adverse effect to local atmospheric environment.
A kind of force ventilated direct water film evaporative air-cooling condensor system comprises condenser, and described condenser comprises exhaust steam import, exhaust steam outlet, air-introduced machine, water collection device, trickle distributor, heat-exchanging tube bundle, air inlet, water tank and trickle circulating pump;
The exhaust steam import of condenser is sent in the exhaust steam of coming out from steam turbine through distribution duct, enter again in each pipe of heat-exchanging tube bundle, water pump in the condenser water tank is delivered in the trickle distributor of heat-exchanging tube bundle top, drench from top to bottom again, form moisture film outside pipe, moving air through air inlet, skims over the outer described moisture film of tube bank under the effect of air-introduced machine, absorb sensible heat and latent heat that moisture film transmits, through arranging to atmosphere behind the water collection device.
Further, the pipe of described heat-exchanging tube bundle is that cross section is the surface light slip pipe of circle, ellipse or rectangle, perhaps is rough corrugated tube or grooved pipe.
Further, the arrangement mode of the pipe of described heat-exchanging tube bundle in condenser is cross arrangement or smooth-going arrangement.
Further, the pipe of described heat-exchanging tube bundle is copper pipe or stainless steel tube.
Further, described air inlet adopts the shutter of the air intake that tilts.
Further, described water collection device compound wave mode made of plastic or honeycomb type.
Further, described condenser is many, forms the cluster type condenser.
Further, described cluster type condenser disposes central water treating apparatus and small pump, and the water that overflows of the water tank of each condenser is pooled to the central water treating apparatus, and small pump is delivered to the water of central water treating apparatus in the water tank of each condenser.
Further, between each condenser, need to leave intake; Perhaps two platform condensers are arranged back-to-back, leave intake between each pair platform condenser.
A kind of Steam Power Circulation system comprises above-mentioned each described force ventilated direct water film evaporative air-cooling condensor system.
The technical characterstic of various condensing modes compares:
(1) heat transfer coefficient
In the water-cooled condenser, cooling water does not have phase transformation to be walked in the pipe, and exhaust steam condensation phase transformation is walked outside the pipe, to improve the condenser heat transfer coefficient.
In the direct dried air cooling tubes condenser, exhaust steam will be sealed mobile, can only walk in the pipe, so the intraductal heat transfer coefficient is bigger.Air thermal conductivity factor outside the pipe is little, and convective heat-transfer coefficient is little, thus come enhanced tube to conduct heat outward with fin, but the heat transfer coefficient outside the pipe is still less, so overall heat-transfer coefficient still is less.
Directly in the water film evaporation air cooling tubes condenser, exhaust steam will be sealed mobile, need walk in the pipe, and the intraductal heat transfer coefficient is bigger.The pipe outer air is when skimming over moisture film, the water film evaporation phase transformation, and heat transfer coefficient is also bigger, so the total heat transfer coefficient of direct water film evaporation air cooling is little unlike the heat transfer coefficient of water-cooled condenser.
(2) thermic load (being refrigerating capacity)
In the direct dried air cooler, the thermic load of air cooling equals the thermal discharge of exhaust steam.
Directly in the water film evaporation air cooling tubes condenser, the thermic load of air cooling equals the thermal discharge of exhaust steam.
In the water condensation way of steam, cooling water takes the exhaust steam heat in the cooling tower to, last in cooling tower the thermic load of air cooling equal the cold that thermal discharge+pump valve pipeline temperature rise heat+low-temperature cold water pipeline leakage loss is taken away of exhaust steam.
As seen, the thermic load of water condensation way of steam is big, and directly water film evaporation air cooling thermic load is little.
(3) condensing temperature
About 15 ℃ of the design end difference of direct dried air cooling is so exhaust steam condensing temperature is higher.
Directly the design end difference of water film evaporation air cooling is about 3～5 ℃, so exhaust steam condensing temperature is lower.
The design end difference of water cooler is about 5 ℃, about 3～5 ℃ of the design end difference of supporting with it cooling tower.
Learn that relatively directly the exhaust steam condensation temperature of water film evaporation air cooling is lower about 5 ℃ than water-cooling pattern, then can hang down more than 20 ℃ than direct dried air cooling mode.
As seen, compare with widely used water condensation way of steam, directly water film evaporation air cooling condensing mode has reduced the low-temp low-pressure line of Rankine cycle, has enlarged the area that Rankine cycle is surrounded, and has improved the efficient of Steam Power Circulation.Like this, steam thermal energy just can be converted into the kinetic energy of steam turbine more, and this completely sends out with regard to more guaranteeing Turbo-generator Set summer.
(4) can the water consumption consumption
Direct dried air cooling condensing mode is economized on water, but Steam Power Circulation efficient is low, and fan energy consumption is big.
The quantity of circulating water of water condensation way of steam is big, and water consumption is big, and the water circulating pump energy consumption is also big.
Directly the water film evaporation air cooling is than the obvious water saving of water-cooled, and is obviously more energy-conservation than direct dried air cooling, so direct water film evaporation air cooling is applicable to not lack of water but water saving requires the area of strictness day by day, as China Central China, East China, south China and southwest.
(5) technology economy advantage of direct water film evaporation air cooling
Compare with direct dried air cooling condensing mode, directly water film evaporation air cooling condensing mode is under the situation that consumes certain evaporated water, can obviously improve efficiency of thermal cycle, obviously multiple, can reduce the blower fan power consumption greatly, reduce station service, can overcome the deficiency that direct dried air cooling condensing mode hot environment can not completely be sent out.
Compare with the water condensation way of steam, directly water film evaporation air cooling condensing mode can obtain the condensing temperature lower than water-cooled, can be multiple electric, obtain higher efficiency of thermal cycle, and can save cooling tower, can significantly reduce quantity of circulating water, can obviously reduce water consumption.
Compare with Hai Leshi, directly the water film evaporation air cooling has saved main feedwater precision processing device.
Compare with the Harmon formula, directly the water film evaporation air cooling has reduced the heat transmission equipment of giving cooling water temperature, has improved heat transfer efficiency, has improved efficiency of thermal cycle.
With just contrary circulating the comparing of parallel connection, directly the water film evaporation air cooling is much simple, is easier to realize.
Description of drawings
Fig. 1 is the tephigram of Steam Power Circulation
Fig. 2 is the tephigram of Steam Power Circulation contrast under the different condensing temperature
Fig. 3 has adopted Steam Power Circulation system and the forced-draft direct water film evaporative air-cooling condensor system schematic diagram behind the present invention
[figure number and title]
1 boiler, 2 superheaters, 3 steam turbines
The direct water film evaporation air cooling of forced ventilation
4 generators 5
6 condensate pumps
Condensing system
7 low-pressure heaters, 8 oxygen-eliminating devices, 9 feed pumps
10 high-pressure heaters, 11 air-introduced machines, 12 water collection devices
13 trickle distributors, 14 condenser exhaust steam imports, 15 heat-exchanging tube bundles
The condenser condensed water outlet
16
17 air inlets, 18 water tanks
Bobbin carriage or header
19 trickle circulating pumps, 20 central water treating apparatus, 21 small pumps
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the present invention are described.But the invention is not restricted to embodiment, those skilled in the art make the modification of some non-intrinsically safe to the present invention and the technical scheme that forms, all in protection domain of the present invention.
Embodiment 1:
With reference to Fig. 3, forced-draft direct water film evaporative air-cooling condensor system in the present embodiment refers to the direct water film evaporation air cooling of forced ventilation condensing group system (hereinafter to be referred as the cluster type condenser), and the exhaust steam that this system can be used for Turbo-generator Set such as thermoelectricity or nuclear power is condensed.Have ten kinds of equipment in the Steam Power Circulation system of Fig. 3, only forced-draft direct water film evaporative air-cooling condensor system 5 (be called for short cluster type condenser) is contained in outdoorly, and other nine kinds of equipment all can be installed in indoor.Being contained in outdoor cluster type condenser 5 is formed by many direct water film evaporation air cooling tubes condenser of forced ventilation clusters.
Because cluster type condenser 5 belows are water tanks of collecting trickle, condenser can only side air inlet, so need to leave intake between each condenser of direct water film evaporation air cooling cluster; Also can two platform condensers 5 back-to-back, leave intake between each pair platform condenser 5.Because be side air inlet, so but the cluster platform frame height of cluster type condenser, also frame height not is sufficient as long as the wind comes from the side.The cluster type condenser can constitute direct water film evaporation air cooling island.The top of cluster type condenser leads directly to atmosphere, and other structures that do not have stop air draft.Cluster type condenser condensed water outlet bobbin carriage or header 16 are higher than the inlet of condensate pump 6, so that condensate water enters condensate pump.
The heat-exchanging tube bundle 15 of cluster type condenser can be with copper pipe or stainless steel tube.The design water surface place of cluster type condenser water tank 18 is equipped with overflow pipe.The water that overflows of each condenser water tank 18 is pooled to central water treating apparatus 20, it is dense that the task of central water treating apparatus 20 is that blowdown is fallen, replenish new water, and carry out anticorrosion, scale removal, algae removal is handled, and then is delivered to the water tank 18 of each condenser by small pump 21 and water pipe.The water quality that trickle is controlled in the water tank 18 process blowdowns of each condenser and moisturizing, trickle is delivered to trickle distributor 13 through trickle circulating pump 19 again.After trickle is assigned with, drench the tube bank outer surface of cluster type condenser, fall into water tank 18 then.
Under the effect of air-introduced machine 11, moving air skims over and restrains outer moisture film through air inlet 17, absorbs sensible heat and latent heat that moisture film transmits, through water collection device 12, is arranged to atmosphere by blower fan.Water collection device 12 common compound wave mode made of plastic or honeycomb types.Efficient receipts water can significantly reduce water smoke blows out, and avoids water smoke to descend slowly and lightly and cause corrosion near equipment, also can alleviate the adverse effect to local atmospheric environment.
Embodiment 2:
With reference to Fig. 3, the direct water film evaporation air cooling system of the forced ventilation in the present embodiment is the stand-alone type condenser, is used for afterheat steam power cycle condensing system.Have ten kinds of equipment in the Steam Power Circulation system of Fig. 3, only forced-draft direct water film evaporative air-cooling condensor system 5 (be called for short stand-alone type condenser) is contained in outdoorly, and other nine kinds of equipment all can be installed in indoor.The top that is contained in outdoor stand-alone type condenser 5 should lead directly to atmosphere, and other structures that do not have stop air draft.Stand-alone type condenser condensed water outlet bobbin carriage or header 16 should be higher than the inlet of condensate pump 6, so that condensate water enters water pump.
The heat exchanger tube of stand-alone type condenser can need not to be equipped with ball cleaning apparatus with copper pipe or stainless steel tube.Stand-alone type condenser bottom water tank 18 can be joined water replanishing device and overflow pipe, blow-off pipe.Anticorrosion, the scale removal of trickle, algae removal are handled and can be carried out together in conjunction with other water device, and then enter water tank by filling pipe.Also can be according to coming water water quality situation, adding medicine comes anticorrosion, scale removal, algae removal in stand-alone type condenser 5 water tanks 18 separately.Trickle circulating pump 19 is generally tubing pump.After trickle is pumped into trickle distributor 13, drench the tube bank outer surface of stand-alone type condenser, fall into water tank 18 then.Because trickle leads directly to atmosphere, and evaporation is arranged,,, and need corresponding additional fresh water so trickle needs continuous blowdown or regularly blowdown so the impurity in the trickle or other one-tenth branch constantly concentrate.
Under the effect of air-introduced machine 11, moving air skims over and restrains outer moisture film through air inlet 17, absorbs sensible heat and latent heat that moisture film transmits, through water collection device 12, is arranged to atmosphere by blower fan.Air inlet 17 adopts the shutter of the air intake that tilts.Water collection device 12 common compound wave mode made of plastic or honeycomb types.Efficient receipts water can significantly reduce water smoke blows out, and avoids water smoke to descend slowly and lightly and cause corrosion near equipment, also can alleviate the adverse effect to local atmospheric environment.
Cold-weather operation is implemented to note
The present invention generally is used for lack of water not but water saving requires strict day by day China Central China, East China, south China and southwest, and these area circulating waters in winter generally do not freeze.So as long as direct water film evaporation air cooling uses the trickle circulation, trickle will absorption tube in the exhaust steam heat, the temperature of the trickle that flows just can not be too low, blocking pipeline just can not freeze.
But if without trickle, the machine heat exchange of only blowing in is just enough, then can not retain stationary water in the pipeline, with anti-freeze blocking pipeline or bursting by freezing pipeline.Central water treating apparatus for the cluster type condenser, the local low point of ponding all must not appear in water pipe and overflow passage, when trickle was stopped using, the water in the pipeline all should flow in the water tank of central water treating apparatus automatically, to avoid freeze blocking pipeline or bursting by freezing pipeline.
Antifreeze another one method is that under the prerequisite that satisfies the heat exchange load, the blower fan frequency reducing reduces air quantity, still uses the trickle circulation.Can guarantee that like this water temperature is suitable, is unlikely icing.
Adopt frequency control to reduce rotation speed of fan when it is cold, energy-conservation to realize, also can adopt the mode of closing several condensers energy-conservation.
Claims (10)
1. forced-draft direct water film evaporative air-cooling condensor system, comprise condenser (5), described condenser (5) comprises exhaust steam import (14), exhaust steam outlet (16), air-introduced machine (11), water collection device (12), trickle distributor (13), heat-exchanging tube bundle (15), air inlet (17), water tank (18) and trickle circulating pump (19);
The exhaust steam import (14) of condenser (5) is sent in the exhaust steam of coming out from steam turbine through distribution duct, enter again in each pipe of heat-exchanging tube bundle (15), water pump in the condenser water tank (18) is delivered in the trickle distributor (13) of heat-exchanging tube bundle (15) top, drench from top to bottom again, outside each pipe of described heat-exchanging tube bundle (15), form moisture film, moving air is process air inlet (17) under the effect of air-introduced machine (11), skim over described moisture film, absorb sensible heat and latent heat that moisture film transmits, arrange to atmosphere through water collection device (12) back.
2. a kind of forced-draft direct water film evaporative air-cooling condensor system according to claim 1, it is characterized in that, the pipe of described heat-exchanging tube bundle (15) is that cross section is the surface light slip pipe of circle, ellipse or rectangle, perhaps is rough corrugated tube or grooved pipe.
3. according to the described a kind of forced-draft direct water film evaporative air-cooling condensor system of one of claim 1-2, it is characterized in that the arrangement mode of pipe in condenser of described heat-exchanging tube bundle (15) is cross arrangement or smooth-going arrangement.
4. according to the described a kind of forced-draft direct water film evaporative air-cooling condensor system of one of claim 1-3, it is characterized in that the pipe of described heat-exchanging tube bundle (15) is copper pipe or stainless steel tube.
5. according to the described a kind of forced-draft direct water film evaporative air-cooling condensor system of one of claim 1-4, it is characterized in that described air inlet (17) adopts the shutter of the air intake that tilts.
6. according to the described a kind of forced-draft direct water film evaporative air-cooling condensor system of one of claim 1-5, it is characterized in that described water collection device (12) compound wave mode made of plastic or honeycomb type.
7. according to the described a kind of forced-draft direct water film evaporative air-cooling condensor system of one of claim 1-6, it is characterized in that described condenser (5) is many, form the cluster type condenser.
8. a kind of forced-draft direct water film evaporative air-cooling condensor system according to claim 7, it is characterized in that, described cluster type condenser disposes central water treating apparatus (20) and small pump (21), the water that overflows of the water tank (18) of each condenser (5) is pooled to central water treating apparatus (20), and small pump (21) is delivered to the water of central water treating apparatus (20) in the water tank (18) of each condenser (5).
9. according to claim 7 or 8 described a kind of forced-draft direct water film evaporative air-cooling condensor systems, it is characterized in that, between each condenser (5), need to leave intake; Perhaps two platform condensers (5) are arranged back-to-back, leave intake between each pair platform condenser (5).
10. a Steam Power Circulation system comprises each described forced-draft direct water film evaporative air-cooling condensor system among the claim 1-9.
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