CN104501624B - Evaporative type cooler and surface-type condensing system united power plant cooling system - Google Patents
Evaporative type cooler and surface-type condensing system united power plant cooling system Download PDFInfo
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- CN104501624B CN104501624B CN201410749009.2A CN201410749009A CN104501624B CN 104501624 B CN104501624 B CN 104501624B CN 201410749009 A CN201410749009 A CN 201410749009A CN 104501624 B CN104501624 B CN 104501624B
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Abstract
Evaporative type cooler disclosed by the invention and surface-type condensing system united power plant cooling system, include evaporative type cooler, and evaporative type cooler is connected with surface condenser and indirect cool tower by grid；Surface condenser connects and composes closed-loop path with water treatment facilities, boiler, steam turbine and generator combined unit successively by water pipe.Evaporative type cooler of the present invention and surface-type condensing system united power plant cooling system, when summer high temperature environment, use twin-stage to cool, it is ensured that the cooling effect of recirculated water, reduces system back pressure, improve steam turbine power generation efficiency.
Description
Technical field
The invention belongs to cooling system technical field, be specifically related to a kind of evaporative type cooler and table
Facial condensing system united power plant cooling system.
Background technology
Thermal power plant's electricity generation system circulation mainly includes boiler, steam turbine, electromotor and condenser
Deng parts；Surface-type condensing system is also called table and coagulates formula indirect air cooling system, is according to China west
North regional water lacks the thermal power plant's generating condensing system arisen at the historic moment, surface-type condensing system
Mainly it is made up of air cooling tower, surface condenser, circulating water line and water circulating pump；Affect table
One important factor of facial condensing system is the air cooling tower cooling capacity to recirculated water, mostly
Air cooling tower design cooling range is 10 DEG C.
According to coal resources in China distribution situation, the Northwest's rich coal resources, as firepower
The shortcoming that power industry, the technology type of traditional clammy cooling tower and water consumption are bigger so that it is
The use lacking area in Northwest Dry Region and water resource is restricted.Additionally, northwest
The hot weather that Area during Summer easily occurs, affects relatively big on the cooling effect of air cooling tower, causes
Air cooling tower cooling effect is limited, typically can not reach the preferable effect of design at summer high temperature environment
Really, causing electricity generation system back pressure to raise, steam turbine power generation load is limited, tends not to reach full
Load operating region, power plants generating electricity coal consumption increases；As can be seen here, at high temperature season to recirculated water
Lower the temperature particularly important.
Evaporation cooling technique be a kind of efficiently, water saving, environmental protection and energy-conservation cooling technology, foundation
Latent heat of vaporization during cooling medium evaporation takes away the heat of main equipment, reaches the effect of cooling.
Evaporative cooling equipment relies on the latent heat of vaporization can realize unit repeats itself water water temperature and decreases below
The sub-wet bulb temperature of outdoor air wet bulb temperature；Compare the temperature of the outdoor air of the air cooling cooling limit
Degree, the outdoor air wet bulb temperature of the clammy cooling limit can more effectively realize recirculated water in indirect cool tower
Cooling.In the Northwest of China, owing to air wet-bulb depression is relatively big, evaporation cooling drives
Gesture is relatively big, is more beneficial for the use of evaporation cooling technique.
For the surface-type condensing system in thermal power plant, NORTHWEST CHINA area, use evaporation cooling
Device realizes the recirculated water reducing temperature twice after indirect cool tower cooling, gives full play to vapotron in northwest
The advantage of Arid Area, to improve the cooling effect of summer high temperature recirculated water, to reduce electricity generation system
Back pressure, raising steam turbine power generation load, saving gross coal consumption rate, increase power plants generating electricity economic benefit,
There is certain promotional value.
Summary of the invention
It is an object of the invention to provide a kind of evaporative type cooler to join with surface-type condensing system
The power plant's cooling system closed, uses twin-stage to cool when summer high temperature environment, it is ensured that
The cooling effect of recirculated water, reduce system back pressure, improve steam turbine power generation efficiency.
The technical solution adopted in the present invention is, evaporative type cooler joins with surface-type condensing system
The power plant's cooling system closed, includes evaporative type cooler, and evaporative type cooler passes through water pipe
Net is connected with surface condenser, indirect cool tower；Surface condenser by water pipe successively with water at
Reason equipment, boiler, steam turbine and generator combined unit connect and compose closed-loop path.
The feature of the present invention also resides in,
Evaporative type cooler, includes cooler casing, on the two side that cooler casing is relative
It is each provided with an air inlet；Heat exchange module-packing composite it is provided with cold in housing of cooler body
But unit, the arranged on left and right sides of heat exchange module-packing composite cooling unit is each provided with one
Vertical pipe type indirect evaporating-cooling unit；The top of heat exchange module-packing composite cooling unit sets
It is equipped with water collection device a, cooler casing roof corresponding above water collection device a is provided with exhaust outlet,
Cooling blower a (18) it is provided with in exhaust outlet；The top of vertical pipe type indirect evaporating-cooling unit
It is provided with water collection device b, the row of being provided with on cooler casing roof corresponding above water collection device b
Air regulator, is provided with cooling blower b in ventilation window.
Vertical pipe type indirect evaporating-cooling unit, includes vertical heat exchanging pipe group, vertical heat exchanging pipe group
Be provided above liquid distribution b, liquid distribution b is by shower and is uniformly arranged on shower
The nozzle composition of upper multiple downward sprays；The lower section of vertical heat exchanging pipe group is provided with cyclic water tank b,
Cyclic water tank b is connected with shower by the second feed pipe；Vertical heat exchanging Guan Zuyu cyclic water tank
Form air channel between b, the housing of cooler body sidewall that air channel is corresponding is provided with overfiren air port.
Vertical heat exchanging pipe group is made up of the many heat exchanger tubes being vertically arranged.
Water circulating pump b it is provided with on second feed pipe.
Heat exchange module-packing composite cooling unit, includes heat exchange module, and heat exchange module leads to
Cross grid to be connected with described surface condenser, indirect cool tower；Being provided above of heat exchange module
Liquid distribution a, liquid distribution a are by sparge pipe and are uniformly arranged on multiple downward sprays on sparge pipe
The nozzle composition drenched；The lower section of heat exchange module is disposed with evaporation cooling filler and cyclic water tank
A, cyclic water tank a are connected with sparge pipe by the first feed pipe.
The outlet of heat exchange module is by going out evaporative type cooler circulating water pipe and surface-type condensing
Device connects, and going out to connect on evaporative type cooler circulating water pipe has demineralized water water distributor, demineralized water cloth
Water pipe is connected with the water inlet of heat exchange module by entering evaporative type cooler circulating water pipe；Surface-type
Condenser is connected with indirect cool tower by the first water pipe, and indirect cool tower is by the second water pipe and demineralized water cloth
Water pipe is connected.
Heat exchange module is heat exchange coil.
Water circulating pump a it is provided with on first feed pipe.
Evaporation cooling filler is the filler of inverted triangle body shape.
The beneficial effects of the present invention is:
1. the power plant of present invention cooling system uses evaporative type cooler shunting part indirect cool tower
Recirculated water after cooling carries out cooling twice, mixes with former water route through cooling twice Posterior circle water,
Reach the purpose of indirect cool tower recirculated water reducing temperature twice, it is ensured that cold at summer high temperature slot cycle water
But effect, the system generating caused to alleviate summer high temperature period surface condenser back pressure to raise
The situation that load declines, and then reduce power plants generating electricity coal consumption, improve generating efficiency.
2. the power plant of the present invention with cooling system by vertical pipe type indirect evaporating-cooling unit and heat exchange
Module-packing composite cooling unit combines composition evaporative type cooler, indirect by vertical pipe type
Evaporation cooling unit fore-cooling room outer air, then by heat exchange module-packing composite cooling unit
Interior evaporation cooling filler reduces air themperature further, when summer high temperature environment, improves sky
The indirect cool tower recirculated water heat exchange efficiency that gas is connected with heat exchange module.
3. the power plant of present invention cooling system uses indirect evaporative cooling technology and direct evaporation
The combining form that cooling technology is compound, reduces trickle water temperature in evaporative type cooler, with heat exchange mould
The indirect cool tower leaving water temperature that block connects is higher, is typically within the temperature range of being easier to fouling, drenches
The reduction of hydroecium temperature can make trickle be difficult in the outer fouling of heat exchange module, it is ensured that evaporative type cooler
Service life.
4. the evaporative type cooler in power plant's cooling system of the present invention is provided with water collection device,
Reducing the drift ice water consumption of evaporative type cooler, the potential safety hazard that original system is caused by the system reform is relatively
Little, there is certain exploitativeness.
Accompanying drawing explanation
The structural representation of Tu1Shi power plant of the present invention cooling system；
The structural representation of evaporative type cooler in Tu2Shi power plant of the present invention cooling system.
In figure, 1. evaporative type cooler, 2. enters evaporative type cooler circulating water pipe, 3. goes out evaporation
Formula cooler circulating water pipe, 4. water treatment facilities, 5. boiler, 6. steam turbine and generator combined
Unit, 7. surface condenser, 8. indirect cool tower, 9. demineralized water water distributor, 10. water circulating pump b,
11. cyclic water tank b, 12. evaporation cooling fillers, 13. water circulating pump a, 14. cyclic water tank a, 15.
Water collection device a, 16. heat exchange modules, 17. liquid distribution a, 18. cooling blower a, 19. water collection device b,
20. cooling blower b, 21. liquid distribution b, 22. standpipe set of heat exchange tubes, 23. first water pipes, 24.
Second water pipe.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
Evaporative type cooler of the present invention and surface-type condensing system united power plant cooling system,
Its structure is as it is shown in figure 1, include evaporative type cooler 1, and evaporative type cooler 1 passes through water
Pipe network is connected with surface condenser 7 and indirect cool tower 8；Surface condenser 7 is depended on by water pipe
Secondary connect and compose close with water treatment facilities 4, boiler 5, steam turbine and generator combined unit 6
Close loop.
Evaporative type cooler 1, its structure, as in figure 2 it is shown, include cooler casing, cools down
It is each provided with an air inlet on the two side that device housing is relative, is provided with in housing of cooler body and changes
Thermal modules-packing composite cooling unit, the left side of heat exchange module-packing composite cooling unit,
Right both sides are each provided with a vertical pipe type indirect evaporating-cooling unit；Heat exchange module-filler is combined
Formula cooling unit be provided above water collection device a15, cooler corresponding above water collection device a15
It is provided with exhaust outlet in housing top wall, in exhaust outlet, is provided with cooling blower a18, each standpipe
The top of formula indirect evaporating-cooling unit is provided with water collection device b19, right above water collection device b19
It is provided with ventilation window on the cooler casing roof answered, in ventilation window, is provided with cooling blower b20.
Vertical pipe type indirect evaporating-cooling unit, includes vertical heat exchanging pipe group 22, vertical heat exchanging
Pipe group 22 is made up of the many heat exchanger tubes being vertically arranged；Being provided above of vertical heat exchanging pipe group 22
Liquid distribution b21, liquid distribution b21 is had by shower and to be uniformly arranged on shower multiple
The nozzle composition of spray downwards；The lower section of vertical heat exchanging pipe group 22 is provided with cyclic water tank b11,
Cyclic water tank b11 is connected with shower by the second feed pipe, the second feed pipe is provided with and follows
Ring water pump b10；Air channel, air channel is formed between vertical heat exchanging pipe group 22 and cyclic water tank b11
It is provided with overfiren air port on corresponding housing of cooler body sidewall.
Heat exchange module-packing composite cooling unit, includes heat exchange module 16, heat exchange module
16 are connected with surface condenser 7, indirect cool tower 8 by grid；Heat exchange module 16 upper
Side is provided with liquid distribution a17, and liquid distribution a17 is by sparge pipe and is uniformly arranged on sparge pipe
The nozzle composition of upper multiple downward sprays；It is cold that the lower section of heat exchange module 16 is disposed with evaporation
But filler 12 and cyclic water tank a14, cyclic water tank a14 are by the first feed pipe with sparge pipe even
Connect, the first feed pipe is provided with water circulating pump a13.
As it is shown in figure 1, the outlet of heat exchange module 16 is by going out evaporative type cooler recirculated water
Pipe 3 is connected with surface condenser 7, goes out to connect on evaporative type cooler circulating water pipe 3 and removes
Saline water distributor 9, demineralized water water distributor 9 is by entering evaporative type cooler circulating water pipe 2 and changing
The water inlet of thermal modules 16 connects；Surface condenser 7 is by the first water pipe 23 and indirect cool tower
8 connect, and indirect cool tower 8 is connected on demineralized water water distributor 9 by the second water pipe 24.
Heat exchange module 16 is heat exchange coil.
Evaporation cooling filler 12 is the filler of inverted triangle body shape.
Evaporative type cooler of the present invention and surface-type condensing system united power plant cooling system
Operation principle:
The air first air inlet on evaporative type cooler 1 two side enters evaporative type cooler 1
In, the drainage at cooling blower a18 enters two vertical pipe type indirect evaporating-cooling unit,
In each vertical pipe type indirect evaporating-cooling unit, air is divided into two parts, portion of air stream
Outside heat exchanger tube, another part air flows through in heat exchanger tube, liquid distribution a17 under spraying
Water in heat exchanger tube with air inversion heat exchange, increase the heat exchange efficiency of air and water, in heat exchanger tube
Air and water hot and humid area, be attached to the water film surface water evaporation of heat exchanger tube inwall, absorption heat-exchange
Moisture film heat on tube wall, comes in the air outside cooling heat transferring pipe, air and heat exchanger tube between trickle
Contact, the outer outdoor air of heat exchanger tube by etc. clammy but；Air after pre-cooling enters heat exchange module
In-packing composite cooling unit, when pervaporation cooling filler 12 and through liquid distribution a17
Water under Pen Lin carries out hot and humid area, and part trickle carburation by evaporation takes away the enthalpy drops such as heat, air
Temperature, trickle temperature decline, and the air of constant enthalpy cooling passes through outside heat exchange module 16, and passes through
After the trickle of cooling then drops back into cyclic water tank a14, through first under the effect of water circulating pump a13
Liquid distribution a17 delivered to by feed pipe, liquid distribution a17 be sprayed to outside heat exchange module 16, with
Air inversion from bottom to top, in the outer heat exchange of heat exchange module 16, takes away the recirculated water of indirect cool tower 8
Heat, reaches the purpose of indirect cool tower 8 recirculated water reducing temperature twice, absorbs the air of heat through receiving
Evaporative type cooler 1 is discharged after hydrophone a15；Recirculated water after reducing temperature twice returns at Water of Power Plant
Reason equipment, enters boiler 5 after treatment, continues power generation cycle.
Wherein, the mode that evaporative type cooler 1 uses ground to arrange is installed, water circulating pump a13
Relatively low with the lift of water circulating pump b10 all ratios, the trickle circulating load of evaporative type cooler 1 is less,
Outside heat exchange module 16, heat exchange, evaporative type cooler is vaporized by the trickle after cooling and air
1 trickle water consumption is less, and conveying energy consumption is relatively low.
Evaporative type cooler of the present invention and surface-type condensing system united power plant cooling system
Work process as follows:
1. in the summer high temperature period: the air of outdoor higher temperature is through the two of vapotron 1
After individual air inlet enters, separately flow in vertical pipe type indirect evaporating-cooling unit, at vertical heat exchanging
At pipe group 22, air is divided into two；Portion of air flows through outside heat exchanger tube, and another part is empty
Air-flow, in heat exchanger tube, enters the air in heat exchanger tube and the water sprayed out through liquid distribution b22
Heat exchanger tube inwall formed uniform water film countercurrent flow, cooling heat transferring inside pipe wall water film temperature,
In heat exchanger tube, the air after hot and humid area is after water collection device b19 processes, and discharges through ventilation window and steams
Hairdo cooler 1.
2. the air through wet pre-coolings such as standpipe type indirect evaporation coolers enters heat exchange module-filler
In Complex-cooling unit, flow through and spray with through liquid distribution a17 at evaporation cooling filler 12
The water got off carries out hot and humid area, evaporation cooling filler 12 table on evaporation cooling filler 12 surface
The water film evaporation in face, absorbs the heat of air and water, cooling air and trickle, the sky after cooling
Air-flow trickle after heat exchange module 16, cooling then flow back in cyclic water tank a14.
Trickle after cooling delivers to trickle through the first feed pipe under the effect of water circulating pump a13
Device a17 sprays out, carries out countercurrent flow with air, between absorption outside heat exchange module 16
The recirculated water heat of cold tower 8, air eventually passes through the water collection device a15 of cooling blower a18 bottom
Discharging evaporative type cooler 1 after process, trickle continues to fall heat exchange in evaporation cooling filler 12,
Finally drop back in cyclic water tank a14.
3. the recirculated water after indirect cool tower 8 heat exchanger cools down is through entering evaporative type cooler recirculated water
Pipe 2 enters in heat exchange module 16, after the trickle outside heat exchange module 16 cools down with air,
Sent vapotron 1 by going out evaporative type cooler circulating water pipe 3, then send the boiler of power plant back to
In 5, continue power generation cycle.
The power plant of the present invention with cooling system by evaporative type cooler and power plant surface-type condensing
System combines, and uses the evaporative type cooler of evaporation cooling technique, will cool down through indirect cool tower
After recirculated water again by evaporative type cooler reducing temperature twice, when summer high temperature environment, use
Twin-stage cools, it is ensured that the cooling effect of recirculated water, moreover it is possible to when hot environment, reduces system
System back pressure, improves steam turbine power generation efficiency, reduces gross coal consumption rate, at NORTHWEST CHINA area firepower
Generating inter-plant cooling system has good application prospect.
Claims (5)
1. evaporative type cooler and surface-type condensing system united power plant cooling system, it is special
Levying and be, include evaporative type cooler (1), described evaporative type cooler (1) passes through water
Pipe network is connected with surface condenser (7), indirect cool tower (8)；
Described surface condenser (7) by water pipe successively with water treatment facilities (4), boiler
(5), steam turbine and generator combined unit (6) connect and compose closed-loop path；
Described evaporative type cooler (1), includes cooler casing, described cooler casing phase
To two side on be each provided with an air inlet；
Heat exchange module-packing composite cooling unit it is provided with in described housing of cooler body, described
The arranged on left and right sides of heat exchange module-packing composite cooling unit is each provided with between a vertical pipe type
Connect evaporation cooling unit；
Described heat exchange module-packing composite cooling unit be provided above water collection device a (15),
It is provided with exhaust outlet, institute on the cooler casing roof that described water collection device a (15) top is corresponding
Cooling blower a (18) it is provided with in stating exhaust outlet；
The top of described vertical pipe type indirect evaporating-cooling unit is provided with water collection device b (19),
It is provided with ventilation window, institute on the cooler casing roof that described water collection device b (19) top is corresponding
Cooling blower b (20) it is provided with in stating ventilation window；
Described vertical pipe type indirect evaporating-cooling unit, includes vertical heat exchanging pipe group (22), institute
That states vertical heat exchanging pipe group (22) is provided above liquid distribution b (21), and described trickle fills
Put b (21) by shower and to be uniformly arranged on the nozzle of multiple downward sprays on shower and form；
The lower section of described vertical heat exchanging pipe group (22) is provided with cyclic water tank b (11), described
Cyclic water tank b (11) is connected with shower by the second feed pipe；
Air channel, wind is formed between described vertical heat exchanging pipe group (22) and cyclic water tank b (11)
It is provided with overfiren air port on the housing of cooler body sidewall that road is corresponding；
Described heat exchange module-packing composite cooling unit, includes heat exchange module (16), institute
State heat exchange module (16) by grid and described surface condenser (7), indirect cool tower (8)
Connect；
Described heat exchange module (16) be provided above liquid distribution a (17), described trickle
Device a (17) is by sparge pipe and is uniformly arranged on the nozzle sets of multiple downward sprays on sparge pipe
Become；
The lower section of described heat exchange module (16) is disposed with evaporation cooling filler (12) and follows
Ring water tank a (14), described cyclic water tank a (14) is connected with sparge pipe by the first feed pipe；
The outlet of described heat exchange module (16) is by going out evaporative type cooler circulating water pipe (3)
Be connected with surface condenser (7), described in go out and connect on evaporative type cooler circulating water pipe (3)
Being connected to demineralized water water distributor (9), described demineralized water water distributor (9) cools down by entering vaporation-type
Device circulating water pipe (2) is connected with the water inlet of heat exchange module (16)；
Described surface condenser (7) is connected with indirect cool tower (8) by the first water pipe (23),
Described indirect cool tower (8) is connected with demineralized water water distributor (9) by the second water pipe (24)；
Described evaporation cooling filler (12) is the filler of inverted triangle body shape.
Power plant the most according to claim 1 cooling system, it is characterised in that described vertical
Formula set of heat exchange tubes (22) is made up of the many heat exchanger tubes being vertically arranged.
Power plant the most according to claim 1 cooling system, it is characterised in that described
Water circulating pump b (10) it is provided with on two feed pipes.
Power plant the most according to claim 1 cooling system, it is characterised in that described in change
Thermal modules (16) is heat exchange coil.
Power plant the most according to claim 1 cooling system, it is characterised in that described
Water circulating pump a (13) it is provided with on one feed pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749009.2A CN104501624B (en) | 2014-12-04 | 2014-12-04 | Evaporative type cooler and surface-type condensing system united power plant cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749009.2A CN104501624B (en) | 2014-12-04 | 2014-12-04 | Evaporative type cooler and surface-type condensing system united power plant cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104501624A CN104501624A (en) | 2015-04-08 |
| CN104501624B true CN104501624B (en) | 2016-11-30 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387443B (en) * | 2015-11-25 | 2017-09-12 | 宋宏明 | A kind of steam oven impulse device |
| CN105953599A (en) * | 2016-05-17 | 2016-09-21 | 山东电力建设第工程公司 | Construction method of condenser |
| CN107462084B (en) * | 2017-07-28 | 2019-07-30 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of composite structure of host machine cooling system and subsidiary engine cooling system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101063595B (en) * | 2006-04-26 | 2010-05-12 | 北京国电华北电力工程有限公司 | SCAL indirect air cooling system used for building 600MW air cooling set |
| CN101776400A (en) * | 2010-01-29 | 2010-07-14 | 华中科技大学 | Forced-draft direct water film evaporative air-cooling condensor system |
| CN202853422U (en) * | 2012-10-09 | 2013-04-03 | 西安工程大学 | Open water cooling unit compounded with vertical tube indirect-direct evaporative cooler |
| CN203628884U (en) * | 2013-10-28 | 2014-06-04 | 西安工程大学 | Stand-pipe-type direct-indirect two-level evaporative cold air machine |
| CN204421686U (en) * | 2014-12-04 | 2015-06-24 | 西安工程大学 | The cooling device that the evaporative cooling being applicable to power plant is combined with surperficial condensing |
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