CN106766997A - A kind of closed cooling tower of fog dispersal of economizing on water - Google Patents

A kind of closed cooling tower of fog dispersal of economizing on water Download PDF

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Publication number
CN106766997A
CN106766997A CN201611119017.4A CN201611119017A CN106766997A CN 106766997 A CN106766997 A CN 106766997A CN 201611119017 A CN201611119017 A CN 201611119017A CN 106766997 A CN106766997 A CN 106766997A
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CN
China
Prior art keywords
water
tower
cooling tower
closed cooling
throttling
Prior art date
Application number
CN201611119017.4A
Other languages
Chinese (zh)
Inventor
陈清林
谢晓翠
张艺
张冰剑
何畅
徐涛
高学农
Original Assignee
中山大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 中山大学 filed Critical 中山大学
Priority to CN201611119017.4A priority Critical patent/CN106766997A/en
Publication of CN106766997A publication Critical patent/CN106766997A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28CHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00Direct-contact trickle coolers, e.g. cooling towers
    • F28C1/16Arrangements for preventing condensation, precipitation or mist formation, outside the cooler
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F25/00Component parts of trickle coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F25/00Component parts of trickle coolers
    • F28F2025/005Liquid collection; Liquid treatment; Liquid recirculation; Addition of make-up liquid

Abstract

The invention discloses a kind of closed cooling tower of fog dispersal of economizing on water, blower fan system is respectively arranged with inside the tower body of closed cooling tower from top to bottom, throttle water collector, spray system, filler part, cooling coil etc.;Described throttling water collector is a kind of throttling cooling element with special construction, is used to reduce closed cooling tower outlet air temperature and humidity, reduces the evaporation loss of shower water, and reduce windage loss.The present invention uses throttling expansion principle, and the humid air in closed cooling tower is by simultaneously after the throttling expansion element of tower top, drastically expanding occurs in humid air, and its temperature and humidity is reduced.Using technical scheme, the white haze phenomenon of closed cooling tower tower top appearance can be eliminated, save closed cooling tower spray water consumption.The purpose of closed cooling tower water saving fog dispersal is reached using the method for throttling cooling, good with water-saving result, recirculated water keeps cleaning, and maintenance cost is low, simple operation and other advantages.

Description

A kind of closed cooling tower of fog dispersal of economizing on water

Technical field

The invention belongs to tower cooling technology field, specifically, it is related to a kind of reduction using throttling expansion principle to close The method of formula Output air of water cooling tower temperature and humidity.

Background technology

Closed cooling tower carries out heat exchange using evaporation cooling technique to cooling medium in coil pipe, reduces recirculated cooling water Direct evaporation loss in temperature-fall period, can effectively reduce recirculating cooling water system rate of water make-up.Compared to open cooling tower, close Formula cooling-tower circulating water matter is good, and water consumption is small, the advantages of energy-conservation.But the spray water evaporation loss of closed cooling tower is opened with commonly Formula cooling tower is the same, about occupies the 1.8% of shower water total amount.Substantial amounts of spray water evaporation not only causes the loss of industrial water, The evaporation and concentration of shower water causes the easy fouling of coil surface and increases the maintenance cost of closed cooling tower simultaneously;The steaming of shower water Hair causes that the air themperature and relative humidity of tower top discharge are all very high, and this hot and humid air is easily formed to the cold after discharge White haze, or even frost is formed, peripheral region environment and visibility are influenceed, easily trigger accident.

Under the overall situation of energy-saving and emission-reduction, the closed cooling tower of exploitation water saving fog dispersal is one of current research emphasis.Close The spray water loss of formula cooling tower mainly includes evaporation loss and windage loss, and evaporation loss accounts for the overwhelming majority.Enclosed is cold But shower water and by after evaporation and heat-exchange, the temperature and humidity of air is increased dramatically in tower.By reducing the temperature of outlet air, Make below water vapor condensation therein to its dew-point temperature, water droplet can be condensed into, reach the purpose for reclaiming evaporation moisture, therefore What the water saving of closed cooling tower was dispersed fog is based primarily upon how to reduce tower top outlet air themperature.Utility model patent CN 203479105U discloses a kind of water saving closed cooling tower, and the traditional open natural evaporation type of cooling is changed to closed air by it The type of cooling, according to wall-type heat exchange principle, is entered cold air with the hot water of flowing in plate-type cooling device using forced ventilation Row heat exchange cooling, but the heat exchange amount of the invention is small, while high energy consumption.Patent of invention CN 103267426B disclose a kind of steaming Hairdo cooling condenser removes white haze device with water saving, is mixed to reduce the temperature of outlet air with air in tower using cold air Degree and humidity, reach the purpose for eliminating white haze.But the supply of cold air need to expend substantial amounts of energy, while tower top demister The resistance of cooling tower will certainly be increased so that the cooling tower structure is complicated, investment is big.

The content of the invention

To solve the spray water evaporation loss and caused a series of problems of closed cooling tower equipment in the prior art, this hair A kind of bright closed cooling tower dispersed fog there is provided water saving.

In order to solve the above technical problems, adopting the following technical scheme that:

A kind of closed cooling tower of fog dispersal of economizing on water, blower fan system is disposed with the tower body of closed cooling tower from top to bottom, is saved Stream water collector, spray system, filler part, cooling coil and tank.

In the closed cooling tower of above-mentioned water saving fog dispersal, described throttling water collector is throttling cooling element.

In the closed cooling tower of above-mentioned water saving fog dispersal, described throttling cooling element is restricting orifice, restricting orifice Throttle orifice be doughnut tubulose, restricting orifice lower section be provided with condensate mozzle and recovery approach.

In the closed cooling tower of above-mentioned water saving fog dispersal, the bottom aperture of the throttle orifice of described doughnut tubulose is big In top aperture, and throttle orifice bottom aperture/top aperture>10, the percent opening of orifice plate is 30 ~ 100%.

In the closed cooling tower of above-mentioned water saving fog dispersal, the material of described throttling cooling element is iron, copper, PVC, PP In one or more compound.

In the closed cooling tower of above-mentioned water saving fog dispersal, the upstream and downstream pressure difference of the throttle orifice of described doughnut tubulose More than 100Pa.

In the closed cooling tower of above-mentioned water saving fog dispersal, described restricting orifice is individual layer or multi-tier arrangement.

In the closed cooling tower of above-mentioned water saving fog dispersal, the cooling tower side between described cooling coil and tank It is provided with air inlet.

In the closed cooling tower of above-mentioned water saving fog dispersal, described air inlet is provided with throttling cooling element.

Compared with prior art, the present invention has the advantages that:

1. the present invention utilizes the principle of throttling expansion, and the humid air of closed cooling tower tower top outlet is by throttling expansion orifice plate unit Its temperature is reduced to below its dew-point temperature during part, vapor is occurred in condensing reflux to tower, and reaching reduces going out for cooling tower Mouthful air themperature and humidity have saved industrial water to eliminate the purpose of tower top white haze.

2. the present invention carries out water saving fog dispersal using simple throttling expansion orifice plate element, is not required to extra consumption power consumption, Traditional closed cooling tower be transformed into such water saving fog dispersal closed cooling tower it is simple to operate, convenient to install and maintain, low cost.

3. the water droplet that Water vapor condensation is formed in closed cooling tower is back in tower can be cold as shower water wetting again But tower tray pipe, had not only improve heat exchange efficiency but also had saved water resource.

Brief description of the drawings

Fig. 1 is structural representation of the invention.

Wherein, 1:Blower fan system; 2:Throttling cooling element; 3:Spray system;4:Filler part;5:Cooling coil is cooled down Water inlet;6:Cooling coil coolant outlet;7:Air inlet;8:Tank;9:Spray pump.

Fig. 2 is the top view of the throttling receipts water hole panel element in embodiment 1.

Fig. 3 is the top view of the throttling receipts water hole panel element in embodiment 2.

Specific embodiment

The present invention is illustrated with reference to the drawings and specific embodiments:

As shown in figure 1, a kind of closed cooling tower of fog dispersal of economizing on water, wind is disposed with the tower body of closed cooling tower from top to bottom Machine system 1, throttle cooling element 2, spray system 3, filler part 4, cooling coil and tank 8.Throttling cooling element 2 is section Discharge orifice plate, the throttle orifice of restricting orifice is doughnut tubulose, and restricting orifice lower section is provided with condensate mozzle and recovery approach. The bottom aperture of the throttle orifice of doughnut tubulose be more than top aperture, and throttle orifice bottom aperture/top aperture>10, hole The percent opening of plate is 30 ~ 100%.The material of throttling cooling element is compound for one or more in iron, copper, PVC, PP.It is hollow The upstream and downstream pressure difference of the throttle orifice of fiber tubulose is more than 100Pa.Restricting orifice is individual layer or multi-tier arrangement.Cooling coil and storage Cooling tower side between pond 8 is provided with air inlet 7, and throttling cooling element 2 is provided with air inlet 7.

Function mode of the invention is:Throttling is controlled to receive the pressure of water element upstream and downstream by adjusting the Fan Equipment of tower top Difference, in the winter time during operating mode, because the entering air temperature of closed cooling tower is low, the cooling effectiveness of tower is high, can be by drop Low spray water consumption, reduces the power of blower fan system, reaches the purpose of water saving fog dispersal.In summer condition, environment temperature is high, enclosed The thermic load for cooling down tower is very big, can set throttling in tower top multilayer and receive water element, while increasing spray water consumption, improves The power of blower fan system, reaches the purpose of water saving fog dispersal.

Optionally, orifice-plate type throttling can also be set at the coil pipe area of closed cooling tower and receives water element, so in blower fan After system is opened, after the damp-heat air after being exchanged heat through coil pipe area receives water element through the throttling of coil pipe area, there is throttling cooling, reduce tower The temperature and humidity of interior air, the mass-and heat-transfer motive force in increase coil pipe area, and then strengthen heat transfer effect, cooling effectiveness is improved, Increase water-saving rate.

Embodiment 1:A kind of closed cooling tower of fog dispersal of economizing on water, is disposed with from top to bottom in the tower body of closed cooling tower Blower fan system 1, throttle cooling element 2, spray system 3, filler part 4, cooling coil and tank 8.Throttling cooling element 2 be Restricting orifice, the throttle orifice of restricting orifice is doughnut tubulose.The throttling cooling element 2 that tower top is used is as shown in Figure 2 Copper/PP round orifice-plate type elements.Operation:Tower top shower water enters spray by feeding spraying pump 9 by bottom of towe tank 8 System 3, after shower water is through the water distribution uniformity of filler 4, is sprayed onto cooling coil surface;Tower top blower fan 1 is rotated and produces negative pressure, bottom of towe Air enters in tower via air inlet 7, and carries out mass-and heat-transfer with the shower water moisture film on cooling coil surface, and Ta Neigao is damp and hot The throttling cooling element 2 that air is embedded in by coil pipe area, reduces by 1 ~ 5 DEG C of temperature, the reduction of air humidity content, by original saturation Humid air is changed into supersaturated humid air, so that the condensate moisture in air is got off, reduces the temperature and humidity of air in tower, increase The mass-and heat-transfer motive force in coil pipe area, and then strengthen heat transfer effect.Flowed out by outlet 6 after cooling water temperature reduction in coil pipe;Tower Top damp-heat air is by after the cooling element 2 that throttles(If during into pressure difference 0.01atm ~ 0.1atm before and after device), go out tower empty The reduction of temperature degree, the hydrogenesis in air are water droplet, fall into tower and serve as spray water circulation use.Throttle cooling element simultaneously 2 effects for also playing water collection device, will can directly be dammed back in tower by the water droplet of windage loss, be finally reached water saving fog dispersal Effect.

Embodiment 2:A kind of closed cooling tower of fog dispersal of economizing on water, is disposed with from top to bottom in the tower body of closed cooling tower Blower fan system 1, throttle cooling element 2, spray system 3, filler part 4, cooling coil and tank 8.The section that tower top is used Stream receives water element PVC hexagonal hole panel elements as shown in Figure 3.Operation:Tower top shower water by feeding spraying pump 9 by Bottom of towe tank 8 enters spray system 3, after shower water is through the water distribution uniformity of filler 4, is sprayed onto cooling coil surface;Tower top wind Machine 1 is rotated and produces negative pressure, and bottom of towe air enters in tower via air inlet 7, and is carried out with the shower water moisture film on cooling coil surface Mass-and heat-transfer, the throttling cooling element 2 that Ta Neigao damp and hot air is embedded in by coil pipe area reduces by 1 ~ 5 DEG C of temperature, and air is containing wet The reduction of amount, supersaturated humid air is changed into from original saturated moist air, so that the condensate moisture in air is got off, is reduced in tower The temperature and humidity of air, the mass-and heat-transfer motive force in increase coil pipe area, and then strengthen heat transfer effect.Cooling water temperature in coil pipe Flowed out by outlet 6 after reduction;Top of tower damp-heat air is by after the cooling element 2 that throttles(If into the pressure difference before and after device During 0.01atm ~ 0.1atm), going out the reduction of tower air themperature, the hydrogenesis in air are water droplet, fall into and serve as shower water in tower Recycle.The cooling element 2 that throttles simultaneously also plays the effect of water collection device, will can directly be dammed by the water droplet of windage loss Return in tower, be finally reached the effect of water saving fog dispersal.

Claims (9)

1. the closed cooling tower that a kind of water saving is dispersed fog, it is characterised in that is disposed with from top to bottom in the tower body of closed cooling tower Blower fan system, throttle water collector, spray system, filler part, cooling coil and tank.
2. the closed cooling tower that water saving as claimed in claim 1 is dispersed fog, it is characterised in that described throttling water collector is section Stream cooling element.
3. the closed cooling tower that water saving as claimed in claim 2 is dispersed fog, it is characterised in that described throttling cooling element is section Discharge orifice plate, the throttle orifice of restricting orifice is doughnut tubulose, and restricting orifice lower section is provided with condensate mozzle and recovery approach.
4. the closed cooling tower that water saving as claimed in claim 3 is dispersed fog, it is characterised in that the section of described doughnut tubulose The bottom aperture of discharge orifice be more than top aperture, and throttle orifice bottom aperture/top aperture>10, the percent opening of orifice plate for 30 ~ 100%。
5. the closed cooling tower that water saving as claimed in claim 2 is dispersed fog, it is characterised in that the material of described throttling cooling element Matter is compound for one or more in iron, copper, PVC, PP.
6. the closed cooling tower that water saving as claimed in claim 3 is dispersed fog, it is characterised in that the section of described doughnut tubulose The upstream and downstream pressure difference of discharge orifice is more than 100Pa.
7. the closed cooling tower of water saving fog dispersal as claimed in claim 3, it is characterised in that described restricting orifice be individual layer or Person's multi-tier arrangement.
8. the closed cooling tower that water saving as claimed in claim 1 is dispersed fog, it is characterised in that described cooling coil and tank Between cooling tower side be provided with air inlet.
9. the closed cooling tower that water saving as claimed in claim 8 is dispersed fog, it is characterised in that described air inlet is provided with throttling Cooling element.
CN201611119017.4A 2016-12-08 2016-12-08 A kind of closed cooling tower of fog dispersal of economizing on water CN106766997A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108759506A (en) * 2018-04-23 2018-11-06 河南展泓图信息科技有限公司 A kind of energy deployment device of cooling tower
CN109954354A (en) * 2017-12-14 2019-07-02 天津大学 A kind of demisting and water saving device for wet cooling tower

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1180828A (en) * 1996-10-19 1998-05-06 姚受田 Recovery device for floating water of glass fibre reinforced plastics cooling tower
JPH1163884A (en) * 1997-08-21 1999-03-05 Ishikawajima Harima Heavy Ind Co Ltd Cooling water tower
CN201327309Y (en) * 2008-10-15 2009-10-14 上海汽车资产经营有限公司 Open and close combined type multi-source double-effect energy tower
CN203629361U (en) * 2013-11-26 2014-06-04 广州览讯科技开发有限公司 Waist-shaped-section-coil closed cooling tower
CN203785483U (en) * 2013-12-12 2014-08-20 浙江舜祥环境科技有限公司 Double-spraying reverse flow closed cooling tower containing pre-cooling filler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1180828A (en) * 1996-10-19 1998-05-06 姚受田 Recovery device for floating water of glass fibre reinforced plastics cooling tower
JPH1163884A (en) * 1997-08-21 1999-03-05 Ishikawajima Harima Heavy Ind Co Ltd Cooling water tower
CN201327309Y (en) * 2008-10-15 2009-10-14 上海汽车资产经营有限公司 Open and close combined type multi-source double-effect energy tower
CN203629361U (en) * 2013-11-26 2014-06-04 广州览讯科技开发有限公司 Waist-shaped-section-coil closed cooling tower
CN203785483U (en) * 2013-12-12 2014-08-20 浙江舜祥环境科技有限公司 Double-spraying reverse flow closed cooling tower containing pre-cooling filler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109954354A (en) * 2017-12-14 2019-07-02 天津大学 A kind of demisting and water saving device for wet cooling tower
CN108759506A (en) * 2018-04-23 2018-11-06 河南展泓图信息科技有限公司 A kind of energy deployment device of cooling tower

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Application publication date: 20170531

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