CN104279884B - A kind of direct air cooled condenser cooling system - Google Patents
A kind of direct air cooled condenser cooling system Download PDFInfo
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- CN104279884B CN104279884B CN201410387842.7A CN201410387842A CN104279884B CN 104279884 B CN104279884 B CN 104279884B CN 201410387842 A CN201410387842 A CN 201410387842A CN 104279884 B CN104279884 B CN 104279884B
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Abstract
A kind of direct air cooled condenser cooling system, comprising: main gland steam exhauster, the steam that steam turbine is discharged flows into main gland steam exhauster；Tedge, tedge connects with main gland steam exhauster, and straight up, steam is entered tedge by main gland steam exhauster and flows up；Level distribution pipe, level distribution pipe one end connects with tedge, and steam is entered level distribution pipe by tedge, and level distribution pipe other end bottom connects with air cooler tube bundle；Air cooler tube bundle, air cooler tube bundle upper end connects with level distribution pipe；Condensing water collector pipe, the water through air cooler tube bundle cooling enters and condenses water collector pipe；This system is provided with condensation water circulation system and sprinkling equipment, condenses water and enters sprinkling equipment by blood circulation, and sprinkling equipment is arranged in level distribution pipe.Use the chiller of the present invention, can effectively reduce turbine back pressure, the vacuum of system can be effectively improved, the work efficiency of steam turbine can be effectively improved, it is also possible to save water consumption.
Description
Technical field
The present invention relates to a kind of direct air cooled condenser cooling system, particularly to one in thermal power plant for steamer
The direct air cooled condenser cooling system of machine.
Background technology
Along with increasingly sharpening of global water resources crisis, air cooling generation technology arises at the historic moment, and obtains rapidly in recent years
Development.Thermal power plant is water resources consumption rich and influential family, and its water consumption accounts for about the 20% of industry total water consumption.China North China, northwest, east
Backlands district is coal main product ground, but water resource critical shortage, become the restraining factors of electric power development, economic construction.
Compared with conventional wet type cooling technology, the advantage of air cooling technique maximum is water saving, uses Air-cooled Unit can make to send out
Power plant water reduces 80%, even as high as 85%.
Direct Air-Cooled is to replace water to cool down gas turbine exhaust gas as cooling medium using air, uses air cooling tubes condenser generation
For traditional water-cooled condenser.Owing to direct air cooling system is to directly utilize dry air to cool down, therefore, Direct Air-cooled Unit
Cooling capacity depend on enter air cooler air themperature, in summer, air themperature is higher, this will cause air cooler cooling energy
Power declines, and causes the vacuum of unit to reduce, and back pressure raises, and the actual of unit is exerted oneself less than design rating, reduces unit
Economy and safety.Therefore, Direct Air-cooled Unit is at summer high temperature period output drop, it is impossible to oepration at full load is that China is empty
One common problem of cold group.
The technology solving direct air cooling system Load in Summer limitation problem at present has two classes: a class is not to original air cooling
System is transformed, and newly-increased a set of peak cooling device shares air cooling load；Another kind of is by installing chiller raising sky additional
Cooling system heat exchange property in high temperature environments.
By separately building the method that a set of peak cooling device shares air cooling load, it is by extraction part in unit exhauster system
The steam of ratio enters in the spike cooling system set up.This system comes into operation the summer high temperature period, can effectively mend
Repay the deficiency of air cooling system cooling capacity, solve the problem that load is limited.Newly-increased cooling system generally uses clammy device, from
And form dry and wet and combine the mode of cooling.This method is applied seldom at present, and main cause is that cost is the highest, not only needs high
Initial outlay cost, and operating cost is the highest.
By installing the method that chiller improves air cooling system heat transfer characteristic in high temperature environments additional, there is evaporation cooling at present
With two kinds of methods of spray cooling.Transpiration-cooled principle is that the demineralized water of atomization is sprayed directly on to heat exchanger surface, utilizes aqueous vapor
Change heat absorption and reduce heat exchanger surface temperature, thus strengthen the heat transfer effect of heat exchanger；The principle of spray cooling is removing atomization
Saline is sprayed on outlet or the entrance of cooling blower, utilizes water heat absorption to reduce the temperature of heat exchanger surrounding air, not gasification
Water droplet rely on air flowing to be carried along into the heat absorption of air cooler surface, thus improve air cooler heat exchange property, reduce unit
The purpose of back pressure.The maximum difference of both cooling means is the consumption of demineralized water, and the consumption of spray cooling demineralized water is general
It it is transpiration-cooled several times.But all there is following shortcoming in both approaches: 1) waste demineralized water, cool water shower is to air
In, it is impossible to reclaim so that unit water consumption increases, increase operating cost；2) cool down air humidity after water spray to strengthen, heatsink fins
Sheet tube-surface humidity strengthens, and the dust in air is easier to stick to, on heat radiator fin pipe, cause finned tube the most dirty, fall
Low heat exchange efficiency；3) in actual applications, if aerosol apparatus installation site or spray system design unreasonable and do not reach spray
Effect, will cause spray system water consumption excessive, even more than the water consumption of wet type cooling unit under equal conditions, and at Air-Cooling Island
" rain belt " formed below.
In order to overcome disadvantages mentioned above, CN102564157B discloses a kind of energy-saving cooling device of direct, and it is special
Point be spraying cooling process be to carry out in jet chimney rather than traditional entering on air cooling tubes condenser or in surrounding air
OK.Its technical scheme refers to Fig. 1.
Energy-saving cooling device of direct disclosed in CN102564157B, at the gland steam exhauster of turbine low pressure cylinder (10)
The water spray dress that the demineralized water with sweet-water tank (17) is connected is added on increase in pipeline (12) i.e. air cooling tubes condenser steam inlet pipe road
Put.The air cooling system of this invention is higher in ambient temperature, when running under the conditions of unit high back pressure, directly enter air cooling tubes condenser
Vapour cools down, and can reduce unit back pressuce, the purpose of the unit output that reaches to save energy and reduce the cost, improve.This technology is by vapour
Install atomizing water spraying device additional in turbine discharge pipe increase in pipeline, demineralized water atomization is introduced entering in vapour of air cooling tubes condenser, thus
Reduce the thermic load of air cooling tubes condenser, improve the vacuum of unit operation.
Energy-saving cooling device of direct disclosed in CN102564157B sprays in gland steam exhauster owing to using, just gram
Take the shortcoming existing for the existing method improving air cooling system heat transfer characteristic in high temperature environments by installing chiller additional.
Summary of the invention
But, the present inventor is in practice, it has been found that there is an obvious shortcoming in this technology, because this device is at steamer
Carrying out spray cooling in machine steam discharge increase in pipeline, and increase in pipeline is the main blow-off line of steam turbine, this is by main for increase gland steam exhauster
Quantity of steam in road and the flow resistance of exhaust steam, thus increase the exhaust resistance of steam turbine, cause turbine efficiency to reduce.
In order to overcome problems of the prior art, the invention provides a kind of direct air cooled condenser cooling system,
It is characterized in that, comprising:
Main gland steam exhauster, the steam that steam turbine is discharged flows into main gland steam exhauster；
Tedge, tedge connects with main gland steam exhauster, and straight up, steam is entered tedge to upstream by main gland steam exhauster
Dynamic；
Level distribution pipe, level distribution pipe one end connects with tedge, and steam is entered level distribution pipe, level by tedge
Distribution pipe other end bottom connects with air cooler tube bundle；
Air cooler tube bundle, air cooler tube bundle upper end connects with level distribution pipe；And
Condensing water collector pipe, the water through air cooler tube bundle cooling enters and condenses water collector pipe；
Wherein, this system is provided with condensation water circulation system and sprinkling equipment, condenses water and enters spray by blood circulation
Equipment, sprinkling equipment is arranged in level distribution pipe.
Preferably, above-mentioned direct air cooled condenser cooling system, this system also includes hot well, condenses water and catchments from condensing water
Pipe flow enters hot well, then is entered condensation water circulation system by hot well.
Preferably, above-mentioned direct air cooled condenser cooling system, condensation water circulation system therein includes:
Condensate pump, precision processing device of condensation water, isolating valve, effusion meter, filter, flow control valve, cooler and pipe
Road, the condensation water in hot well via condensate pump pressurize after enter precision processing device of condensation water, the condensation water after boosting via every
Disconnected valve, effusion meter, filter, flow control valve enters cooler, and the condensation water after cooling enters sprinkling equipment by pipeline.
Preferably, above-mentioned direct air cooled condenser cooling system, condensation water circulation system therein includes:
Condensate pump, isolating valve, effusion meter, filter, flow control valve, cooler and pipeline, condense water collector pipe and receive
After the condensation water of collection directly pressurizes via condensate pump, warp is entered cooling by isolating valve, effusion meter, filter, flow control valve
Device, the condensation water after cooling enters sprinkling equipment by pipeline.
Preferably, above-mentioned direct air cooled condenser cooling system, this system also includes a sweet-water tank, at condensing capacity
Time not enough, sweet-water tank supplies the demineralized water of requirement in condensing water circulation system.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, sprinkling equipment includes water distributor and shower nozzle, water distribution
Pipe is arranged on inside level distribution pipe, is used for distributing cooling water and connecting shower nozzle, and shower nozzle will be for cooling down water atomization.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, sprinkling equipment is duct shape sprinkling equipment, including
Water distributor and the multiple shower nozzles being provided thereon, the plurality of nozzle tip arrangement becomes spindle or taper, and water distributor is arranged on level
In distribution pipe, form the atomization cooling section of duct shape with this.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, sprinkling equipment is circular spray tube.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, sprinkling equipment is vertical vertical shower pipe, at cloth
Multiple shower nozzle straight down it is provided with on water pipe.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, sprinkling equipment is horizontal shower pipe, at water distributor
On be provided with the shower nozzle of horizontal direction.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, before sprinkling equipment is arranged on air cooler tube bundle.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, it is vertical just that sprinkling equipment is arranged on air cooler tube bundle
Top.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, sprinkling equipment is arranged on air cooler tube bundle entrance
Place.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein it is possible to organize sprinkling equipment more.
Preferably, above-mentioned direct air cooled condenser cooling system, wherein, it is provided with water spray control in the porch of sprinkling equipment
Valve processed.In the present invention, so arrange and can effectively protect control valve electrical equipment to avoid being located at inside sprinkling equipment
Cause and make moist, thus beneficially system vacuum tightness.Owing to being provided with multiple spray cooling at diverse location, by install additional
The diverse location that condensation water after cooling leads within level distribution pipe is carried out mist cooling cooling by pipeline.
Preferably, above-mentioned energy-conserving cooling device, wherein, in sprinkling equipment, also it is equiped with between water distributor and shower nozzle and leads
Pipe, is connected to shower nozzle on water distributor by conduit.
Use the cooling system of the present invention, use summer and can effectively accelerate exhaust steam in steam turbine condensation process, improve system
Vacuum, reduce turbine back pressure, reduce gas turbine exhaust gas temperature, be effectively improved the work efficiency of steam turbine, reduce and enter
The thermic load of direct air cooling system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of energy-saving cooling device of direct disclosed in prior art CN102564157B.
Fig. 2 a is the direct air cooled condenser cooling system overall structure schematic diagram of embodiment 1；
Fig. 2 b is the side of the air cooler tube bundle being connected with level distribution pipe in the direct air cooled condenser cooling system of Fig. 2 a
Depending on enlarged drawing；
Fig. 2 c be Fig. 2 a direct air cooled condenser cooling system in the side-looking enlarged drawing of sprinkling equipment；
Fig. 2 d be Fig. 2 a direct air cooled condenser cooling system in sprinkling equipment water distributor on arrange conduit and spray
The enlarged drawing of head.
Fig. 3 a is the direct air cooled condenser cooling system schematic diagram of embodiment 2；
Fig. 3 b is the side of the air cooler tube bundle being connected with level distribution pipe in the direct air cooled condenser cooling system of Fig. 3 a
Depending on enlarged drawing；
Fig. 3 c be Fig. 3 a direct air cooled condenser cooling system in the side-looking enlarged drawing of sprinkling equipment；
Fig. 3 d be Fig. 3 a direct air cooled condenser cooling system in sprinkling equipment water distributor on arrange conduit and spray
The enlarged drawing of head.
Fig. 4 a is the direct air cooled condenser cooling system overall structure schematic diagram of embodiment 4；
Fig. 4 b is the side-looking enlarged drawing of the sprinkling equipment of the direct air cooled condenser cooling system of Fig. 4 a；
Fig. 4 c is the side of the air cooler tube bundle being connected with level distribution pipe of the direct air cooled condenser cooling system of Fig. 4 a
Depending on enlarged drawing.
Fig. 5 a is the direct air cooled condenser cooling system overall structure schematic diagram of embodiment 5；
Fig. 5 b be Fig. 5 a direct air cooled condenser cooling system in the enlarged drawing of sprinkling equipment.
Fig. 6 a is the direct air cooled condenser cooling system overall structure schematic diagram of embodiment 6；
Fig. 6 b is the side-looking that the direct air cooled condenser cooling system of Fig. 6 a distributes the air cooler tube bundle that pipe is connected with level
Enlarged drawing；
Fig. 6 c is the partial enlargement structural representation of the sprinkling equipment of the direct air cooled condenser cooling system of Fig. 6 a.
Fig. 7 a is the direct air cooled condenser cooling system overall structure schematic diagram of embodiment 7；
Fig. 7 b is the side of the air cooler tube bundle being connected with level distribution pipe in the direct air cooled condenser cooling system of Fig. 7 a
Depending on enlarged drawing；
Fig. 7 c is the close-up schematic view of the direct air cooled condenser cooling system sprinkling equipment of Fig. 7 a.
Fig. 8 a is the direct air cooled condenser cooling system overall structure schematic diagram of embodiment 8；
Fig. 8 b be Fig. 8 a energy-conserving cooling device in level distribution pipe and the partial enlarged drawing of sprinkling equipment.
Detailed description of the invention
The heat energy of steam is converted to mechanical energy by steam turbine, is one of the capital equipment of thermoelectricity and nuclear power, sends out for dragging
Electric power generation.For condensing turbine, the initial steam produced from boiler enters high pressure cylinder via main valve, enters back into middle pressure
Cylinder, enters back into low pressure (LP) cylinder, eventually enters into condenser.The heat energy of steam, at steam turbine internal consumption, becomes the kinetic energy of steam, then pushes away
Move and fill vaned turbine rotor, be eventually converted into mechanical energy.Back pressure makes steam turbine export exhaust steam pressure in fact, and everybody is commonly called as
Back pressure.Refer to finish the certain pressure that the later steam of merit also has.Back pressure is the lowest, turbine inlet steam pressure and outlet row
The difference of steam pressure is the biggest, is more conducive to the heat energy of steam is converted into mechanical energy, and generating efficiency is the highest.
Replace traditional water-cooled condenser with air cooling tubes condenser, water consumption can be saved, but in summer due to Air Temperature
Spending higher, be deteriorated the cooling effect of steam, it is necessary to install chiller additional, major part chiller is all to spray outside pipe
Drench, which results in following problem: 1) waste demineralized water, in cool water shower to air, it is impossible to reclaim so that unit water consumption
Increase, increase operating cost；2) cooling down air humidity after water spray to strengthen, heat radiator fin tube-surface humidity strengthens, in air
Dust is easier to stick to, on heat radiator fin pipe, cause finned tube the most dirty, reduces heat exchange efficiency；3) apply in reality
In, if aerosol apparatus installation site or spray system design unreasonable and do not reach spraying effect, spray system water consumption will be caused
Measure excessive, even more than the water consumption of wet type cooling unit under equal conditions, and in Air-Cooling Island " rain belt " formed below.
In order to solve these problems, CN102564157B proposes the concept of spray in pipe, it is simply that at turbine discharge
Carrying out spray cooling in increase in pipeline, by such technical measures, what CN102564157B solved that the outer spray of pipe causes asks
Topic.But, owing to increase in pipeline is the main blow-off line of steam turbine, which increases the quantity of steam in main blow-off line and exhaust steam
Flow resistance, thus increase the exhaust resistance of steam turbine, cause turbine efficiency to reduce.
The present inventor is for this problem, through studying for a long period of time and putting into practice in a large number, has been found that and enters condenser in exhaust steam
Horizontal pipe in spray, the most both can solve to manage the problem that outer spray causes, can solve again in increase in pipeline spray
Drench the exhaust steam flow resistance increase caused thus the problem causing gas turbine exhaust gas resistance increase to cause turbine efficiency to reduce.?
On the basis of this, the present inventor completes the present invention.The present inventors have additionally discovered that, if the demineralized water of cooling is cold through subcooler again
But spraying in level distribution pipe after, effect is more preferable, it is possible to significantly reduce water consumption, the present inventors have additionally discovered that, by inciting somebody to action
The condensation water of steam condensation recycles as spray-water in whole system, can save the consumption of demineralized water in a large number.
The present invention is explained, it should be appreciated that protection scope of the present invention is not limited to institute below by specific embodiment
The embodiment be given, all deformation meeting spirit of the present invention or variant belong to protection scope of the present invention.
Embodiment 1
Seeing Fig. 2 a, Fig. 2 b, Fig. 2 c and Fig. 2 d, it is a kind of direct air cooled condenser cooling system, as shown in Figure 2 a, and its
It is a kind of direct air cooled condenser cooling system, comprising:
Main gland steam exhauster 3, the steam that steam turbine is discharged flows into main gland steam exhauster 3；
Tedge 4, tedge connects with main gland steam exhauster 3, and straight up, steam is entered tedge 4 upwards by main gland steam exhauster 3
Flowing；
Level distribution pipe 5, level distribution pipe 5 one end connects with tedge 4, and steam is entered level distribution pipe by tedge 4
5, level distribution pipe 5 other end bottom connects with air cooler tube bundle 6；
Air cooler tube bundle 6, air cooler tube bundle upper end connects with level distribution pipe 5；And
Condensing water collector pipe 7, the water through air cooler tube bundle cooling enters and condenses water collector pipe 7；
Wherein, this system is provided with condensation water circulation system and sprinkling equipment, condenses water and enters spray by blood circulation
Equipment, sprinkling equipment is arranged in level distribution pipe.
Sprinkling equipment includes sparge pipe joint 18, water distributor 19, conduit 20, shower nozzle 21, the most also outside sprinkling equipment
It is provided with the water spraying control valve 17 for controlling the water yield.
Fig. 2 b is the side view of the air cooler tube bundle 6 being connected with level distribution pipe 5, and wherein direct air cooled condenser is A word
Shape is arranged, its structure is the conventional structure that power station is conventional, by this side view it can be seen that sparge pipe joint 18, water distributor 19, with
And conduit 20 and shower nozzle 21 are in level distribution pipe 5；Fig. 2 c is that in Fig. 2 a, sprinkling equipment is arranged on level distribution circle within pipe 5
Annular water distributor 19 side-looking enlarged drawing, by 2c it can be seen that sparge pipe joint 18 connects water distribution in inserting level distribution pipe 5
Pipe 19 and be provided with the pipeline of water spraying control valve 17, conduit 20 is by the cold condensate entered in water distributor 19 or other cooling mediums such as
Demineralized water imports in shower nozzle 21；Conduit 20 that Fig. 2 d is disposed on water distributor 19 and the enlarged drawing of shower nozzle 21.
Its workflow is as follows: steam turbine 1 steam discharge enters in steam exhaust device 2, through main gland steam exhauster 3, tedge 4, level
Distribution pipe 5, inside level distribution pipe 5, through distribution, steam enters in air cooler tube bundle 6, enters and condense water collection after condensation
Water pipe 7, in condensate return pipe 8 flow back into hot well 9, enters precision processing device of condensation water by condensate pump 10 after being boosted
11, the condensation water after boosting from precision processing device of condensation water 11 by effusion meter 12 (monitor and add up condensation water spray water flux, with
Just control and monitor), isolating valve 13, filter 14 (filtering the foreign material condensed in water, with blockage resisting shower nozzle 21), flow control valve
15 (control condensing capacities), enter cooler 16 and (can also be directly entered cooler not via flow control valve 15 as required
16), to reduce the temperature condensing water, thus improve cooling effect, reduce and spray into the intrasystem water yield and reduce in the system of bringing into
Quantity of steam, be i.e. equivalent to undertake the thermic load of a part of Direct Air-Cooled device.High pressure low temperature after cooling down via cooler 16 coagulates
Bear water by water spraying control valve 17 that (it is 1 group or more than 1 group, is set to 2 groups in the present embodiment, controls to be installed in level distribution pipe 5
In some section or the water spray switch of a certain group), (being installed on level distribution pipe 5, its one end connects water distribution to sparge pipe joint 18
Pipe 19, the other end connection level distribution pipeline being provided with water spraying control valve 17 outside pipe 5, in the season not using cooling system
Joint, can block, runs or during Maintenance and Repair, is easy to open and uses), (installing is fixed on level and distributes water distributor 19
In pipe 5, be used for providing distribution condense water and firm conduit 20 and shower nozzle 21 can be supported), conduit 20 (is used for connecting stationary nozzle
The water pipe of 21), spray rapidly after shower nozzle 21 is atomized, water distributor 19 is in annular, and multiple shower nozzles are around this water distributor annulus
Circumference and be designed on water distributor (this water distributor can be provided with multiple, is provided with 2 water distributors in this embodiment), spraying square
Formula is annular swirl-spray, and water droplet runs into the exhaust steam of steam turbine in being injected to level distribution pipe 5, the water droplet of high pressure low temperature is in temperature
Can evaporate rapidly in the environment of high pressure is low, reduce exhaust steam temperature, thus reduce exhaust steam temperature, be allowed to cooling mesh
's.
Wherein, aforementioned isolating valve is provided with multiple on cooling pipe, and cooler 16 can also use heat exchanger, Ke Yiwei here
Handpiece Water Chilling Units or heat exchanger and the parts of heat pump combination, as long as the conventional components of cooling effect can be played or unit is the most permissible
Being used herein, wherein cooling way i.e. low-temperature receiver can use auxiliary machine circulating cooling water, it would however also be possible to employ small-sized vapotron,
Handpiece Water Chilling Units can also be used, it is also possible to do not cool down, and be directly entered system spraying.
Embodiment 2
Seeing Fig. 3 a, Fig. 3 b, Fig. 3 c and Fig. 3 d, it is a kind of direct air cooled condenser cooling system, as shown in Figure 3 a, and its
It is a kind of direct air cooled condenser cooling system, comprising:
Main gland steam exhauster, the steam that steam turbine is discharged flows into main gland steam exhauster；
Tedge, tedge connects with main gland steam exhauster, and straight up, steam is entered tedge to upstream by main gland steam exhauster
Dynamic；
Level distribution pipe, level distribution pipe one end connects with tedge, and steam is entered level distribution pipe, level by tedge
Distribution pipe other end bottom connects with air cooler tube bundle；
Air cooler tube bundle, air cooler tube bundle upper end connects with level distribution pipe；And
Condensing water collector pipe, the water through air cooler tube bundle cooling enters and condenses water collector pipe；
Wherein, this system is provided with condensation water circulation system and sprinkling equipment, condenses water and enters spray by blood circulation
Equipment, sprinkling equipment is arranged in level distribution pipe.
Sprinkling equipment includes sparge pipe joint 18, water distributor 19, conduit 20, shower nozzle 21, the most also outside sprinkling equipment
It is provided with the water spraying control valve 17 for controlling the water yield.
Fig. 3 b is the side view of the air cooler tube bundle 6 being connected with level distribution pipe 5, and wherein direct air cooled condenser is A word
Shape is arranged, its structure is the conventional structure that power station is conventional, by this side view it can be seen that sparge pipe joint 18, water distributor 19, with
And conduit 20 and shower nozzle 21 are in level distribution pipe 5；Fig. 3 c is that in Fig. 2 a, sprinkling equipment is arranged on level distribution circle within pipe 5
Annular water distributor 19 side-looking enlarged drawing, by this figure it can be seen that sparge pipe joint 18 connects cloth in inserting level distribution pipe 5
Water pipe 19 and the pipeline being provided with water spraying control valve 17, conduit 20 is by the cold condensate entered in water distributor 19 or other cooling mediums
As demineralized water imports in shower nozzle 21；Conduit 20 that Fig. 3 d is disposed on water distributor 19 and the enlarged drawing of shower nozzle 21.
Its workflow is as follows: steam turbine 1 steam discharge enters in steam exhaust device 2, through main gland steam exhauster 3, tedge 4, level
Distribution pipe 5, inside level distribution pipe 5, through distribution, steam enters in air cooler tube bundle 6, enters and condense water collection after condensation
Water pipe 7, is directly boosted by condensate pump 10 through condensate return pipe 8, and the condensation water after boosting passes through effusion meter 12, isolating valve
13, filter 14, flow control valve 15, enters cooler 16, and the high pressure low temperature after cooling condenses water by water spraying control valve 17
(being installed on level distribution pipe 5, its one end connects water distributor 19 to (being set to 2 groups), sparge pipe joint 18, and the other end connects level
The distribution pipeline being provided with water spraying control valve 17 outside pipe 5, in the season not using cooling system, can be blocked, and runs
Or during Maintenance and Repair, be easy to open and use), water distributor 19, conduit 20, through nozzle 21 be atomized after spray rapidly, water distributor 19
In annular, multiple shower nozzles be designed at around the circumference of this water distributor annulus water distributor (this water distributor can be provided with multiple,
This embodiment is provided with 2 water distributors) on, spray pattern is annular swirl-spray, and water droplet is met in being injected to level distribution pipe 5
To the exhaust steam of steam turbine, the water droplet of high pressure low temperature can evaporate rapidly in the environment of temperature high pressure is low, reduces the temperature of exhaust steam,
Thus reduce exhaust steam temperature, be allowed to cooling purpose.
Embodiment 3
See Fig. 2 a-Fig. 2 d and Fig. 3 a-3d, the direct air cooled condenser cooling system of embodiment 3 and embodiment 1 or 2
Direct air cooled condenser cooling system is roughly the same, is a difference in that and also includes a sweet-water tank A, sweet-water tank A by every
Being connected with effusion meter 12 from valve, when condensing capacity deficiency, the demineralized water in sweet-water tank A fills into condensation water circulation system.
Embodiment 4
Seeing Fig. 4 a-Fig. 4 c, Fig. 4 a is the overall structure schematic diagram of the direct air cooled condenser cooling system of embodiment 4,
Fig. 4 b is the side-looking enlarged drawing of the sprinkling equipment of the direct air cooled condenser cooling system of Fig. 4 a, and Fig. 4 c is the Direct Air-Cooled of Fig. 4 a
The side-looking enlarged drawing of the air cooler tube bundle being connected with level distribution pipe 5 in condenser cooling system., Fig. 4 a-Fig. 4 c can see
Going out, the direct air cooled condenser cooling system of embodiment 4 is roughly the same with the direct air cooled condenser cooling system of embodiment 1,
Difference is, water spraying control valve 17 is set to 1 group, and water distributor 19 is duct shape, and multiple shower nozzles are provided thereon and are arranged in spindle
Shape or taper, thus form the atomization cooling section of duct shape, under the effect of shower nozzle 21, form violent whirl, add
Speed cooling down.It addition, also include a sweet-water tank A, sweet-water tank A is connected with effusion meter 12 by isolating valve, is condensing
During water shortage, the demineralized water in sweet-water tank fills into condensation water circulation system.Alternatively, it is also possible to as embodiment 2 and Fig. 3 a that
Sample, after directly condensate return pipe 8 condensation water out being boosted by condensate pump 10, by effusion meter 12, isolating valve 13,
Filter 14, flow control valve 15, enter cooler 16, and fill without the hot well 9 shown in embodiment 1 and condensate polishing treatment
Put 11.
Embodiment 5
Seeing Fig. 5 a and Fig. 5 b, it is the direct air cooled condenser cooling system of embodiment 5.Wherein, Fig. 5 a is embodiment 3
The overall structure schematic diagram of direct air cooled condenser cooling system, Fig. 5 b is in the direct air cooled condenser cooling system of Fig. 5 a
The enlarged drawing of sprinkling equipment.By Fig. 5 a-Fig. 5 b it can be seen that the direct air cooled condenser cooling system of embodiment 5 and embodiment 1
Direct air cooled condenser cooling system roughly the same, difference is, water spraying control valve 17 is set to 1 group, and water distributor 19 sets
Put the region fore at air cooler tube bundle 6, be the pipelines closed of both ends, arrange below water distributor 19 multiple vertically downward
Shower nozzle 21, to realize carrying out vertical spray in front, air cooler tube bundle district, i.e. when steam is introduced into the front end of tube bank, at this
In region, spray the condensation water of low-temperature atomizing at shower nozzle 21, gasify rapidly and reduce temperature.It addition, also include a demineralized water
Case A, sweet-water tank A are connected with effusion meter 12 by isolating valve, and when condensing capacity deficiency, the demineralized water in sweet-water tank fills into
Condense water circulation system.Alternatively, it is also possible to as embodiment 2 and Fig. 3 a, directly by condensate return pipe 8 condensation water out
After being boosted by condensate pump 10, by effusion meter 12, isolating valve 13, filter 14, flow control valve 15, enter cooler
16, and without the hot well 9 shown in embodiment 1 and precision processing device of condensation water 11.
Embodiment 6
Seeing Fig. 6 a-Fig. 6 c, it is the direct air cooled condenser cooling system structural representation of embodiment 6；Wherein, Fig. 6 a
Being the overall structure schematic diagram of the direct air cooled condenser cooling system of embodiment 6, Fig. 6 b is the direct air cooled condenser of Fig. 6 a
The side-looking enlarged drawing of the air cooler tube bundle being connected with level distribution pipe 5 in cooling system, Fig. 6 c is the Direct Air-Cooled condensing of Fig. 6 a
The partial enlargement structural representation of the sprinkling equipment of device cooling system.By Fig. 6 a-Fig. 6 c it can be seen that embodiment 6 direct empty
Cold condenser cooling system is roughly the same with the direct air cooled condenser cooling system of embodiment 1, and difference is, water spray control
Valve 17 processed is set to 1 group, and water distributor 19 is arranged on directly over the region of air cooler tube bundle 6, to realize above air cooler tube bundle district
Carry out vertical (vertically) spraying.Wherein, when steam is in level distribution pipe 5, when entering tube bank section, upper end in this region, spray
21 ejection low-temperature condensates, the vapor (steam) temperature in part atomization reduction level distribution pipe 5, a part condenses water smoke and sweeps along
It is internal that steam enters into tube bank, cooling of gasifying further.It addition, also include a sweet-water tank A, sweet-water tank A is by isolation
Valve is connected with effusion meter 12, and when condensing capacity deficiency, the demineralized water in sweet-water tank fills into condensation water circulation system.It addition,
Directly condensate return pipe 8 condensation water out can also be boosted by condensate pump 10 as embodiment 2 and Fig. 3 a
After, by effusion meter 12, isolating valve 13, filter 14, flow control valve 15, enter cooler 16, and without embodiment 1 institute
The hot well 9 shown and precision processing device of condensation water 11.
Embodiment 7
Seeing Fig. 7 a-Fig. 7 c, it is the direct air cooled condenser cooling system structural representation of embodiment 7；Wherein, Fig. 7 a
Being the overall structure schematic diagram of the direct air cooled condenser cooling system of embodiment 7, Fig. 7 b is the direct air cooled condenser of Fig. 7 a
The side-looking enlarged drawing of the air cooler tube bundle being connected with level distribution pipe 5 in cooling system, Fig. 7 c is the Direct Air-Cooled condensing of Fig. 7 a
The partial enlargement structural representation of the sprinkling equipment of device cooling system.By Fig. 7 a-Fig. 7 c it can be seen that embodiment 7 direct empty
Cold condenser cooling system is roughly the same with the direct air cooled condenser cooling system of embodiment 1, and difference is, water spray control
Valve 17 processed is set to 1 group, and water distributor 19 is arranged on the immediately above of air cooler tube bundle, and each tube bank porch arranges a shower nozzle 21
(here, shower nozzle 21 arranged direction restraining 6 porch is preferably consistent with the incline direction of tube bank 6), to realize at air cooler pipe
Restraint 6 porch sprayings.That is, in level distribution pipe 5, when steam enters tube bank, restrain porch, spray low temperature at shower nozzle 21 and coagulate
Bearing water, it is internal that the cryogenic temperature condensation water smoke of atomization sweeps along steam to enter into tube bank, gasification cooling.It addition, also include a desalination
Water tank A, sweet-water tank A are connected with effusion meter 12 by isolating valve, and when condensing capacity deficiency, the demineralized water in sweet-water tank is mended
Enter to condense water circulation system.Alternatively, it is also possible to as embodiment 2 and Fig. 3 a, directly by condensate return pipe 8 condensation out
After water is boosted by condensate pump 10, by effusion meter 12, isolating valve 13, filter 14, flow control valve 15, enter cooler
16, and without the hot well 9 shown in embodiment 1 and precision processing device of condensation water 11.
Embodiment 8
Seeing Fig. 8 a-Fig. 8 b, it is the direct air cooled condenser cooling system structural representation of embodiment 8；Wherein, Fig. 8 a
Being the overall structure schematic diagram of the direct air cooled condenser cooling system of embodiment 8, Fig. 8 b is the direct air cooled condenser of Fig. 8 a
Level distribution pipe and the side-looking enlarged drawing of sprinkling equipment in cooling system.By Fig. 8 a-Fig. 8 b it can be seen that embodiment 8 direct
Air cooling tubes condenser cooling system is roughly the same with the direct air cooled condenser cooling system of embodiment 1, and difference is, water spray
Control valve 17 is set to 1 group, and water distributor 19 is arranged on the region fore of air cooler tube bundle, and water distributor 19 arranges the spray of horizontal direction
21 (can arrange here and connect shower nozzle by conduit, it is possible to be directly fixed on water distributor by shower nozzle without conduit；At this
Being designed specifically to the most ductless embodiment of the latter in embodiment, water distributor 19 plays the effect of stationary nozzle, and this shower nozzle sets
Being calculated as swirl flow nozzle, its volume and jet flow amount are the biggest), to realize at air cooler tube bundle region fore horizontal spraying, i.e. work as steaming
When vapour is introduced into the front end of tube bank, in this region, at the condensation water of shower nozzle 21 level rotary flow ejection low-temperature atomizing, gasify rapidly
And reduce temperature.It addition, also include a sweet-water tank A, sweet-water tank A is connected with effusion meter 12 by isolating valve, is condensing
During water shortage, the demineralized water in sweet-water tank fills into condensation water circulation system.Alternatively, it is also possible to as embodiment 2 and Fig. 3 a that
Sample, after directly condensate return pipe 8 condensation water out being boosted by condensate pump 10, by effusion meter 12, isolating valve 13,
Filter 14, flow control valve 15, enter cooler 16, and fill without the hot well 9 shown in embodiment 1 and condensate polishing treatment
Put 11.
Technique effect
The direct air cooled condenser cooling system of the embodiment of the present invention 1 is applied to certain thermal power plant, its turbine generator
The model of unit is CZK200-12.75/0.981/535/535, and table 1 below shows that the cooling of this air cooling tubes condenser is by power plant
Design parameter that system requires, the actual operation parameters of this equipment and the operational factor after taking the sprinkling equipment of the present invention are detailed
Carefully contrast situation.
Table 1 design parameter actual operation parameters takes the contrast table of spray measure operational factor
As can be seen from the above table, after using the technology of the present invention, the back pressure of steam exhaust device i.e. exhaust steam pressure reduces
6.6KPa, can reduce steam and enter the heat of air cooling system, improves the vacuum of system, thus improves the work effect of steam turbine
Rate, saves the water consumption of whole system.
Claims (26)
1. a direct air cooled condenser cooling system, it is characterised in that comprising:
Main gland steam exhauster, the steam that steam turbine is discharged flows into main gland steam exhauster；
Tedge, tedge connects with main gland steam exhauster, and straight up, steam is entered tedge by main gland steam exhauster and flows up；
Level distribution pipe, level distribution pipe one end connects with tedge, and steam is entered level distribution pipe by tedge, and level is distributed
Pipe other end bottom connects with air cooler tube bundle；
Air cooler tube bundle, air cooler tube bundle upper end connects with level distribution pipe；And
Condensing water collector pipe, the water through air cooler tube bundle cooling enters and condenses water collector pipe；
Wherein, this system is provided with condensation water circulation system and sprinkling equipment, condenses water and enters sprinkling equipment by blood circulation,
Sprinkling equipment is arranged in level distribution pipe；
Sprinkling equipment includes water distributor and shower nozzle, and water distributor is arranged on inside level distribution pipe, is used for distributing cooling water and connecting
Shower nozzle, shower nozzle will be for cooling down water atomization.
Direct air cooled condenser cooling system the most according to claim 1, this system also includes hot well, condenses water from condensation
Water collector pipe flows into hot well, then is entered condensation water circulation system by hot well.
Direct air cooled condenser cooling system the most according to claim 2, condensation water circulation system therein includes:
Condensate pump, precision processing device of condensation water, isolating valve, effusion meter, filter, flow control valve, cooler and pipeline, heat
Condensation water in well via condensate pump pressurize after enter precision processing device of condensation water, the condensation water after boosting via isolating valve,
Effusion meter, filter, flow control valve enters cooler, and the condensation water after cooling enters sprinkling equipment by pipeline.
Direct air cooled condenser cooling system the most according to claim 1, condensation water circulation system therein includes:
Condensate pump, isolating valve, effusion meter, filter, flow control valve, cooler and pipeline, condense what water collector pipe was collected
Condensing through by isolating valve, effusion meter, filter after water directly pressurizes via condensate pump, flow control valve enters cooler, cold
But the condensation water after enters sprinkling equipment by pipeline.
5., according to the direct air cooled condenser cooling system described in any one of claim 1-4, this system also includes a desalination
Water tank, when condensing capacity deficiency, sweet-water tank supplies the demineralized water of requirement in condensing water circulation system.
6. according to the direct air cooled condenser cooling system described in any one of claim 1-4, wherein, sprinkling equipment is duct shape
Sprinkling equipment, including water distributor and the multiple shower nozzles being provided thereon, the plurality of nozzle tip arrangement becomes spindle or taper, water distribution
Pipe is arranged in level distribution pipe, forms the atomization cooling section of duct shape with this.
7. according to the direct air cooled condenser cooling system described in any one of claim 1-4, wherein, sprinkling equipment is annular spray
Shower pipe.
8. according to the direct air cooled condenser cooling system described in any one of claim 1-4, wherein, sprinkling equipment is vertically spray
Shower pipe, is provided with multiple shower nozzle straight down on water distributor.
9. according to the direct air cooled condenser cooling system described in any one of claim 1-4, wherein, sprinkling equipment is level spray
Shower pipe, is provided with the shower nozzle of horizontal direction on water distributor.
Direct air cooled condenser cooling system the most according to claim 6, wherein, sprinkling equipment is arranged on air cooler pipe
Shu Qian.
11. direct air cooled condenser cooling systems according to claim 7, wherein, sprinkling equipment is arranged on air cooler pipe
Shu Qian.
12. direct air cooled condenser cooling systems according to claim 8, wherein, sprinkling equipment is arranged on air cooler pipe
Shu Qian.
13. direct air cooled condenser cooling systems according to claim 9, wherein, sprinkling equipment is arranged on air cooler pipe
Shu Qian.
14. direct air cooled condenser cooling systems according to claim 6, wherein, sprinkling equipment is arranged on air cooler pipe
Directly over Shu Shuzhi.
15. direct air cooled condenser cooling systems according to claim 7, wherein, sprinkling equipment is arranged on air cooler pipe
Directly over Shu Shuzhi.
16. direct air cooled condenser cooling systems according to claim 8, wherein, sprinkling equipment is arranged on air cooler pipe
Directly over Shu Shuzhi.
17. direct air cooled condenser cooling systems according to claim 9, wherein, sprinkling equipment is arranged on air cooler pipe
Directly over Shu Shuzhi.
18. direct air cooled condenser cooling systems according to claim 6, wherein, sprinkling equipment is arranged on air cooler pipe
At beam entrance.
19. direct air cooled condenser cooling systems according to claim 7, wherein, sprinkling equipment is arranged on air cooler pipe
At beam entrance.
20. direct air cooled condenser cooling systems according to claim 8, wherein, sprinkling equipment is arranged on air cooler pipe
At beam entrance.
21. direct air cooled condenser cooling systems according to claim 9, wherein, sprinkling equipment is arranged on air cooler pipe
At beam entrance.
22. direct air cooled condenser cooling systems according to claim 6, wherein, are provided with and organize sprinkling equipment more.
23. direct air cooled condenser cooling systems according to claim 7, wherein, are provided with and organize sprinkling equipment more.
24. direct air cooled condenser cooling systems according to claim 8, wherein, are provided with and organize sprinkling equipment more.
25. direct air cooled condenser cooling systems according to claim 9, wherein, are provided with and organize sprinkling equipment more.
26. according to the direct air cooled condenser cooling system described in any one of claim 1-4, wherein, entering at sprinkling equipment
Water spraying control valve it is provided with at Kou.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10161683B2 (en) | 2015-08-20 | 2018-12-25 | Holtec International | Dry cooling system for powerplants |
| US10132568B2 (en) | 2015-08-20 | 2018-11-20 | Holtec International | Dry cooling system for powerplants |
| CN108167207A (en) * | 2018-02-26 | 2018-06-15 | 北京百正创源科技有限公司 | Cooling blower device and the cooling equipment with the device |
| CN110966876A (en) * | 2019-11-28 | 2020-04-07 | 云南固废投资有限公司 | A multifunctional spray system for direct air-cooled condenser heat exchange tube bundles |
| CN112944939A (en) * | 2021-04-12 | 2021-06-11 | 华电重工股份有限公司 | Spraying device of direct air cooling system |
| CN113983452A (en) * | 2021-09-18 | 2022-01-28 | 杭州中能汽轮动力有限公司 | Parallel peak cooling air-cooled steam turbine generator unit and condensing method |
| CN116659255A (en) * | 2023-04-13 | 2023-08-29 | 同方节能工程技术有限公司 | Contact condenser and operation system thereof |
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| GB2226962B (en) * | 1989-01-06 | 1992-04-29 | Birwelco Ltd | Steam condensing apparatus |
| CN100467833C (en) * | 2002-02-05 | 2009-03-11 | 张庆玉 | Dual-action vacuum device for industrial waste heat power generation and flue gas dust collection |
| HU225331B1 (en) * | 2003-04-24 | 2006-09-28 | Egi Energiagazdalkodasi Reszve | Air cooler system |
| CN1704562A (en) * | 2004-05-27 | 2005-12-07 | 许建壮 | Double-case compound jet condenser and dry-wet combined cooling tower for turbo-generator set |
| CN101694167B (en) * | 2009-10-14 | 2012-05-23 | 华北电力大学（保定） | Steam exhausting cooling method and device of condensing steam turbine of auxiliary thermal power station |
| CN101936669B (en) * | 2010-09-02 | 2012-09-05 | 洛阳隆华传热科技股份有限公司 | Hybrid composite condensation method and condenser |
| CN102425957A (en) * | 2011-11-24 | 2012-04-25 | 华北电力大学 | Plate type evaporation air-cooling condenser with obliquely-arranged heat exchange plate bundles |
| CN102564157B (en) * | 2011-12-26 | 2013-04-17 | 西安热工研究院有限公司 | Energy-saving cooling device of direct air cooling system |
| CN102583857A (en) * | 2012-02-07 | 2012-07-18 | 绍兴文理学院 | Electrical fresh water co-production device for coastal thermal power plant and island thermal power plant |
| CN202630727U (en) * | 2012-05-23 | 2012-12-26 | 烟台青大生物制药有限公司 | Direct-spraying-type residual steam processing device |
| CN202853424U (en) * | 2012-09-14 | 2013-04-03 | 山西三元和能源科技有限公司河南分公司 | System for improving vacuum degree of air cooling system of power plant |
| CN203479063U (en) * | 2013-07-11 | 2014-03-12 | 欧尔东有限公司 | Special purification water-saving device for medical waste treatment |
| CN103449545B (en) * | 2013-08-26 | 2014-10-22 | 集美大学 | Method and equipment for generating electricity and preparing fresh water by use of low-temperature heat source |
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