CN203478483U - Composite evaporating and condensing device suitable for power plant - Google Patents

Composite evaporating and condensing device suitable for power plant Download PDF

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Publication number
CN203478483U
CN203478483U CN201320540174.8U CN201320540174U CN203478483U CN 203478483 U CN203478483 U CN 203478483U CN 201320540174 U CN201320540174 U CN 201320540174U CN 203478483 U CN203478483 U CN 203478483U
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China
Prior art keywords
vaporation
water
type condenser
heat exchange
exchange coil
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Expired - Fee Related
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CN201320540174.8U
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Chinese (zh)
Inventor
黄翔
邱佳
郝航
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Xian Polytechnic University
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Xian Polytechnic University
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Abstract

The utility model discloses a composite evaporating and condensing device suitable for a power plant. The composite evaporating and condensing device comprises a device shell, an air inlet is formed in each of two opposite side walls of the device shell, an air outlet is formed at the top end of the device shell, two sets of indirect evaporating and cooling devices are symmetrically arranged on the left side and the right side in the device shell respectively, an evaporative condenser is arranged between the indirect evaporating and cooling devices, and an exhaust fan is arranged between the upper portion of the evaporative condenser and the air outlet. By the composite evaporating and condensing device, condensing efficiency is improved, system backpressure and condensing temperature are lowered, circulating water quantity is reduced, and safe, economical and effective running of the evaporative condenser is guaranteed.

Description

A kind of composite evaporation condensing plant that is applicable to power plant
Technical field
The utility model belongs to air conditioner technical field, relates to the composite evaporation formula condensing plant of using in a kind of power plant.
Background technology
Evaporative cooling is as a kind of high efficiency cooling technology, and it is the heat that the latent heat of vaporization while evaporating according to cooling medium is taken away main equipment, makes its cooling.Refrigerant vaporizes latent heat is than much larger times of equal quality cooling medium liquid specific heat, has advantages of efficient, energy-conservation, water saving and low-carbon (LC).And the cooling effect of evaporation air cooler is better than dry air cooled heat exchanger and wet air cooler, can makes to manage interior process fluid temperature and reach and approach environment wet-bulb temperature.In NORTHWEST CHINA area, exist at present abundant thermal power generation fuel, this type of regional water resource is poorer simultaneously, by air cooling system, for power plant, the Northwest, is to solve in one of effective measures of this " rich coal lack of water " regional exhaust steam in steam turbine condensation.
Adopt the principle of evaporation cooling technique, shunting power plant exhaust steam in steam turbine, the part exhaust steam of shunting is by condensation heat release in evaporative condenser.At evaporative condenser air inlet, place installs indirect air cooling device additional, to wet cooling processing such as evaporative condenser intake air carry out, in the outdoor high temperature period, the wet precoolings such as evaporative condenser inlet air quilt, the recirculated water of the outer spray of the air after precooling and evaporative condenser heat exchanger tube carries out the wet exchange of heat, can make the shower water outside vaporation-type heat exchange tube of condenser reach the sub-wet-bulb temperature lower than outdoor air wet bulb temperature, and then can improve the condensation efficiency of vaporation-type condenser, reduce quantity of circulating water, reduce back pressure simultaneously, save power plant's gross coal consumption rate.
In sum, steam turbine condensing system for thermal power plant, NORTHWEST CHINA area, adopt that indirect evaporation cooler is combined with vaporation-type condenser indirect-direct combination formula vaporation-type condenser, the wet precoolings such as air themperature of the wet exchange of heat will be carried out outward at vaporation-type heat exchange tube of condenser, air after precooling and Sprayer Circulation water are carried out to the wet exchange of heat, can make recirculated water water temperature reach sub-wet-bulb temperature, and then improve the condensation efficiency of vaporation-type condenser, reduce quantity of circulating water, save coal consumption.Evaporative cooling and evaporative condenser are effectively combined, and the exhaust steam in steam turbine condensation aspect that improves the thermal power plant, condensation efficiency , the Northwest of vaporation-type condenser has certain promotional value.
Utility model content
The purpose of this utility model is to provide a kind of composite evaporation condensing plant that is applicable to power plant, has improved the condensation efficiency of vaporation-type condenser, has reduced system back pressure and condensation temperature, has reduced the recirculated water water yield.
The technical scheme that the utility model adopts is, a kind of composite evaporation condensing plant that is applicable to power plant, include device case, device case is respectively provided with an air inlet on relative two side, device case top is provided with exhaust outlet, in device case, the left and right sides is symmetrically arranged with respectively one group of apparatus for cooling by indirect evaporation, between two groups of apparatus for cooling by indirect evaporation, is provided with vaporation-type condenser, between vaporation-type condenser top and exhaust outlet, is provided with exhaust blower.
Feature of the present utility model is also,
Air inlet is arranged on the corresponding device case sidewall in apparatus for cooling by indirect evaporation top.
Vaporation-type condenser, include the water fender that sets gradually from top to bottom, be connected and vaporation-type condenser heat exchange coil a and vaporation-type condenser heat exchange coil b, spray water-locator and the cyclic water tank of S-shaped layout, the entrance point of vaporation-type condenser heat exchange coil a is connected with exhaust steam import, the port of export of vaporation-type condenser heat exchange coil b is connected with condensate line, is provided with shunting filler module in the S shape corner of vaporation-type condenser heat exchange coil b.
The media assemblage that shunting filler module is arranged by multilayer parallel, leaves gap between multiple filling layers.
Filler is at least provided with two-layer.
Apparatus for cooling by indirect evaporation, include the hydrotreater, indirect evaporation cooler a and the indirect evaporation cooler b that by water pipe, connect successively from bottom to top, hydrotreater is connected with water main by water supply arm, water main is connected with cyclic water tank, on water main, be provided with water circulating pump, indirect evaporation cooler b is connected with spray water-locator by spray header.
The beneficial effects of the utility model are:
1. composite evaporation formula condensing plant of the present utility model combines indirect evaporation cooler with vaporation-type condenser, utilize indirect evaporation cooler to process wet coolings such as outdoor air carry out, it is low that air ' s wet bulb temperature after indirect evaporation cooler precooling is compared outdoor air wet bulb temperature, etc. the air after wet cooling processing, on vaporation-type condenser heat exchange coil, carry out the wet exchange of heat with trickle again, shower water temperature outside final vaporation-type condenser heat exchange coil is by the sub-wet-bulb temperature leveling off to lower than outdoor air wet bulb temperature, the condensation efficiency of raising vaporation-type condenser that can be to a certain degree, reduce Sprayer Circulation water water consumption,
2. in composite evaporation formula condensing plant of the present utility model, between vaporation-type condenser heat exchange coil, shunting filler is set, on the one hand, alleviate the inhomogeneous phenomenon of water distribution the vaporation-type condenser heat exchange coil directly causing from top water distribution, improved the uniformity of water distribution of whole vaporation-type condenser heat exchange coil; The part filler adopting on the other hand, has increased vaporation-type condenser heat exchange area, and then improves evaporative cooling efficiency;
3. in composite evaporation formula condensing plant of the present utility model, adopt water fender, reduce the drift ice loss of vaporation-type condenser, reduce vaporation-type condenser recirculated water consumption;
4. in composite evaporation formula condensing plant of the present utility model, adopt hydrotreater, recirculated water through outside indirect evaporation cooler and vaporation-type condenser heat exchange coil is carried out to water treatment, the indirect evaporation cooler that reduction circulating water quality causes and vaporation-type condenser heat exchange coil corrode and affect the problem of heat transfer effect, guarantee vaporation-type condenser safety, economy, move efficiently.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model composite evaporation formula condensing plant;
Fig. 2 is the side view of the utility model composite evaporation formula condensing plant.
In figure, 1. water circulating pump, 2. cyclic water tank, 3. indirect evaporation cooler a, 4. indirect evaporation cooler b, 5. exhaust steam import, 6. exhaust blower, 7. vaporation-type condenser heat exchange coil a, 8. spray water-locator, 9. water fender, 10. condensate line, 11. hydrotreaters, 12. shunting filler modules, 13. exhaust outlets, 14. air inlets, 15. water mains, 16. vaporation-type condenser heat exchange coil b, 17. fillers.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Composite evaporation formula condensing plant of the present utility model, its structure as shown in Figure 1, include device case, device case is respectively provided with an air inlet 14 on relative two side, device case top is provided with exhaust outlet 13, in device case, the left and right sides is symmetrically arranged with respectively one group of apparatus for cooling by indirect evaporation, between two groups of apparatus for cooling by indirect evaporation, is provided with vaporation-type condenser, between the top of vaporation-type condenser and exhaust outlet 13, is provided with exhaust blower 6.Two groups of apparatus for cooling by indirect evaporation structures are identical.
Air inlet 14 is arranged on the corresponding device case sidewall in apparatus for cooling by indirect evaporation top.
Vaporation-type condenser, as shown in Figure 1, include the water fender 9 that sets gradually from top to bottom, be connected and vaporation-type condenser heat exchange coil a7 and vaporation-type condenser heat exchange coil b16, spray water-locator 8 and the cyclic water tank 2 of S-shaped layout, as shown in Figure 2, the entrance point of vaporation-type condenser heat exchange coil a7 is connected with exhaust steam import 5, the port of export of vaporation-type condenser heat exchange coil b16 is connected with condensate line 10, and condensate line 10 is connected with power plant water treatment facilities.In the S shape corner of vaporation-type condenser heat exchange coil b16, be provided with shunting filler module 12.
Shunting filler module 12, its structure as shown in Figures 1 and 2, is at least comprised of two blocks of fillers that be arranged in parallel 17, between every block of filler 17, is provided with gap.
Apparatus for cooling by indirect evaporation, its structure as shown in Figure 1, include the hydrotreater 11, indirect evaporation cooler a3 and the indirect evaporation cooler b4 that by water pipe, connect successively from bottom to top, hydrotreater 11 is connected with water main 15 by water supply arm, water main 15 is connected with cyclic water tank 2, on water main 15, be provided with water circulating pump 1, indirect evaporation cooler b4 is connected with spray water-locator 8 by shower.
On vaporation-type condenser heat exchange coil a7, do not spray water distribution, vaporation-type condenser heat exchange coil b16 is upper sprays water distribution by spray water-locator 8, and shunting filler 12 is set between vaporation-type condenser heat exchange coil b16.Exhaust steam in steam turbine enters in vaporation-type condenser through exhaust steam import 5, and condensate water is sent vaporation-type condenser in power plant water treatment facilities by condensate line 10.
Outdoor air is through exhaust blower 6 drainage, from air inlet 14, enter in device case, first outdoor air is through the indirect evaporation cooler a3 of both sides, to wet precoolings such as outdoor air carry out, air after precooling passes through the wet precoolings such as indirect evaporation cooler b4 is further again, air after precooling enters into vaporation-type condenser by air channel, successively through vaporation-type condenser heat exchange coil b16 and shunting filler 12, carry out heat wet exchange with the recirculated water spraying from top to bottom, reduce the water temperature of Sprayer Circulation water, air themperature reduces, air after the wet exchange of heat carries out exchange heat with spray water-locator 8 top vaporation-type condenser heat exchange coil a7 again, again by after water fender 9 dash, by exhaust blower 6 through exhaust outlet 13 discharger hull outside.
Apparatus for cooling by indirect evaporation in device case is arranged on left and right sides and is arranged symmetrically with, adopt indirect evaporation cooler a3 wherein and indirect evaporation cooler b4 to outdoor air precooling, can reduce outdoor air wet bulb temperature, and then can to make trickle temperature outside vaporation-type condenser heat exchange coil b16 be reduced to lower than outdoor air wet bulb temperature be sub-wet-bulb temperature.Vaporation-type condenser heat exchange coil b16 surface water distribution situation that the layout of shunting filler module 12 is even on the one hand, increased on the other hand the contact area of Sprayer Circulation water and precooled air, adopt the air after the wet exchange of 9 pairs of heat of water fender to remove water treatment, the serious phenomenon of vaporation-type condenser drift ice can minimizing air band water to a certain degree causing, and then reduce the recirculated water water consumption that air drift ice brings, reduced condensation cost.Effectively utilize the spatial placement hydrotreater 11 of vaporation-type condenser, utilize hydrotreater 11 cycle for the treatment of water, guarantee can not produce fouling or corrosion through the recirculated water of indirect evaporation cooler a3, indirect evaporation cooler b4 and vaporation-type condenser heat exchange coil b16, avoided whole device heat exchange property to exert an influence.
The course of work of the utility model composite evaporation formula condensing plant is:
1. in the summer high temperature period, in the translateral air inlet 14 access to plant housings of air of outdoor higher temperature, first carry out the wet precoolings such as exchange heat with indirect evaporation cooler a3 and indirect evaporation cooler b4, air after precooling enters in vaporation-type condenser heat exchange coil b16 through air channel, through shunting filler module 12, spray water-locator 8, vaporation-type condenser heat exchange coil a7, water fender 9, finally by exhaust blower 6 outside exhaust outlet 13 discharger housings.
2. the recirculated water that vaporation-type condenser drops in cyclic water tank 2 carries out pretreatment through hydrotreater 11, to reduce circulation hardness of water and acid-base value, avoid the fouling and corrosion producing to affect indirect evaporation cooler a3, indirect evaporation cooler b4 and vaporation-type condenser heat exchange coil b16, recirculated water is after treatment sent to indirect evaporation cooler a3 and indirect evaporation cooler b4 place successively by water circulating pump 1, high temperature air outside fore-cooling room, recirculated water water temperature after fore-cooling room's outer air rises, enter into again spray water-locator 8, by spray water-locator 8, sprayed on vaporation-type condenser heat exchange coil b16, carry out the wet exchange of heat with air, steam in vaporation-type condenser heat exchange coil b16, unevaporated recirculated water is respectively through shunting filler module 12, guarantee that vaporation-type condenser heat exchange coil b16 water distribution is even, finally, recirculated water after the wet exchange of heat drops in cyclic water tank 2, complete circulation.
3. from the exhaust steam of steam turbine, through exhaust steam import 5, in vaporation-type condenser heat exchange coil a7, carry out condensation heat release, condensate water sends back in water treatment of power plant equipment by condensate line 10.
The utility model composite evaporation formula condensing plant effectively combines evaporative cooling and evaporative condenser technology, in thermal power plant, NORTHWEST CHINA area, has certain application prospect.By indirect evaporation cooler to wet precoolings such as outdoor air carry out, air after precooling and vaporation-type condenser heat exchange coil spray the wet exchange of hydro-thermal, outdoor air directly can reach outdoor air wet bulb temperature with the wet limit water temperature that exchanges of vaporation-type condenser heat exchange coil spray hydro-thermal in theory, because the air ' s wet bulb temperature after precooling is compared outdoor wet-bulb temperature reduction, by the air after precooling and the wet exchange of shower water heat outside vaporation-type condenser heat exchange coil, the theoretical accounting temperature of Sprayer Circulation water is sub-wet-bulb temperature (lower than outdoor air wet bulb temperature higher than outdoor air dew-point temperature).The reduction of Sprayer Circulation water water temperature, has improved on the one hand the condensation efficiency of vaporation-type condenser, reduces system back pressure, reduces power plant's gross coal consumption rate, on the other hand reduction to a certain degree the water yield of recirculated water, saved transportation energy consumption.
In vaporation-type condenser heat exchange coil b16 interior laminate layer, shunting filler module 12 is set, can alleviate the inhomogeneous condenser temperature field of causing of vaporation-type condenser heat exchange coil b16 shower water water distribution of bringing due to air agitation on the one hand inhomogeneous, reduce the heat exchange efficiency of vaporation-type condenser; The shunting filler module 12 increasing on the other hand, has further increased the specific area that air contacts with water, make to contact with Sprayer Circulation water by the air after apparatus for cooling by indirect evaporation precooling more abundant, raising efficiency of damp and hot exchanging.Adopt hydrotreater 11 to process the recirculated water of apparatus for cooling by indirect evaporation, guarantee by the trickle water quality of indirect evaporation cooler a3, indirect evaporation cooler b4 and vaporation-type condenser heat exchange coil b16, avoided due to the impact of the factors such as fouling, corrosion on indirect evaporation cooler a3, indirect evaporation cooler b4 and vaporation-type condenser heat exchange coil b16 heat exchange efficiency, guaranteed indirect evaporation cooler a3, indirect evaporation cooler b4 and vaporation-type condenser heat exchange coil b16 safety, economic, operation efficiently.

Claims (6)

1. a composite evaporation condensing plant that is applicable to power plant, it is characterized in that, include device case, described device case is respectively provided with an air inlet (14) on relative two side, described device case top is provided with exhaust outlet (13), in described device case, the left and right sides is symmetrically arranged with respectively one group of apparatus for cooling by indirect evaporation, between two groups of apparatus for cooling by indirect evaporation, be provided with vaporation-type condenser, between described vaporation-type condenser top and described exhaust outlet (13), be provided with exhaust blower (6).
2. a kind of composite evaporation condensing plant that is applicable to power plant according to claim 1, is characterized in that, described air inlet (14) is arranged on the corresponding device case sidewall in described apparatus for cooling by indirect evaporation top.
3. a kind of composite evaporation condensing plant that is applicable to power plant according to claim 1, it is characterized in that, described vaporation-type condenser, include the water fender (9) setting gradually from top to bottom, be connected and the vaporation-type condenser heat exchange coil a(7 of S-shaped layout) and vaporation-type condenser heat exchange coil b(16), spray water-locator (8) and cyclic water tank (2), described vaporation-type condenser heat exchange coil a(7) entrance point is connected with exhaust steam import (5), described vaporation-type condenser heat exchange coil b(16) the port of export is connected with condensate line (10), described vaporation-type condenser heat exchange coil b(16) in S shape corner, be provided with shunting filler module (12).
4. a kind of composite evaporation condensing plant that is applicable to power plant according to claim 3, is characterized in that, the filler (17) that described shunting filler module (12) is arranged by multilayer parallel forms, and described multiple filling layers leaves gap between (17).
5. a kind of composite evaporation condensing plant that is applicable to power plant according to claim 4, is characterized in that, described filler (17) is at least provided with two-layer.
6. a kind of composite evaporation condensing plant that is applicable to power plant according to claim 1, it is characterized in that, described apparatus for cooling by indirect evaporation, include the hydrotreater (11) connecting successively by water pipe from bottom to top, indirect evaporation cooler a(3) and indirect evaporation cooler b(4), described hydrotreater (11) is connected with water main (15) by water supply arm, described water main (15) is connected with described cyclic water tank (2), on described water main (15), be provided with water circulating pump (1), described indirect evaporation cooler b(4) by spray header, be connected with described spray water-locator (8).
CN201320540174.8U 2013-08-30 2013-08-30 Composite evaporating and condensing device suitable for power plant Expired - Fee Related CN203478483U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103453605A (en) * 2013-08-30 2013-12-18 西安工程大学 Indirect-direct composite evaporative condensing device used for power plant
CN104074559A (en) * 2014-07-22 2014-10-01 襄阳泽东化工集团有限公司 Steam turbine electrical power generating system
CN104343478A (en) * 2014-10-22 2015-02-11 烟台荏原空调设备有限公司 Dual working medium circulating power generation system of waste heat in recovered flue gas
CN106091728A (en) * 2016-06-03 2016-11-09 西安工程大学 The step cooling down water with composite construction prepares cooling tower

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103453605A (en) * 2013-08-30 2013-12-18 西安工程大学 Indirect-direct composite evaporative condensing device used for power plant
CN103453605B (en) * 2013-08-30 2016-06-22 西安工程大学 The power plant vaporation-type condensing plant of indirectly-direct combination
CN104074559A (en) * 2014-07-22 2014-10-01 襄阳泽东化工集团有限公司 Steam turbine electrical power generating system
CN104343478A (en) * 2014-10-22 2015-02-11 烟台荏原空调设备有限公司 Dual working medium circulating power generation system of waste heat in recovered flue gas
CN106091728A (en) * 2016-06-03 2016-11-09 西安工程大学 The step cooling down water with composite construction prepares cooling tower
CN106091728B (en) * 2016-06-03 2018-05-15 西安工程大学 Step cooling down water with composite construction prepares cooling tower

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Granted publication date: 20140312

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