CN105605941A - Automatic defogging control system of cooling tower - Google Patents
Automatic defogging control system of cooling tower Download PDFInfo
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- CN105605941A CN105605941A CN201610184769.2A CN201610184769A CN105605941A CN 105605941 A CN105605941 A CN 105605941A CN 201610184769 A CN201610184769 A CN 201610184769A CN 105605941 A CN105605941 A CN 105605941A
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- air
- tower
- module
- cooling tower
- control system
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/16—Arrangements for preventing condensation, precipitation or mist formation, outside the cooler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses an automatic defogging control system of a cooling tower. The automatic defogging control system comprises a data acquisition module, a data analysis module connected with the data acquisition module, and a control module connected with the data analysis module, wherein the data acquisition module is used for acquiring humidity and temperature parameters of an air outlet of the cooling tower, humidity and temperature parameters of an environment, an air volume parameter of dry cold air entering the tower and an air volume parameter of wet cold air entering the tower; the data analysis module is used for receiving the parameter data of the data acquisition module to judge rain or fog or calculate a working condition; the control module is used for receiving a signal of the data analysis module and controlling the air volume into the tower of the dry cold air and the wet cold air and opening and closing of a first pipeline and a second pipeline. The automatic defogging control system disclosed by the invention automatically controls the air volume into the tower of the dry cold air and the wet cold air according to the acquired humidity and temperature of the tower opening and the humidity and temperature of the environment, so that the labor intensity of a worker is reduced, unmanned control over defogging is realized, and the defogging efficiency is greatly improved.
Description
Technical field
The present invention relates to cooling tower control technology field, especially, relate to a kind of automatic defrosting control of cooling towerSystem processed.
Background technology
In cooling tower field, normally upper at cooling tower water distribution pipeline for the method for eliminating misty rain in recent yearsFang Zengshe is made up of dry and cold air inlet, finned tube exchanger and the fog dispersal pipeline by finned tube exchangerMisty rain system disappears. In the time that needs disappear misty rain, dry and cold air inlet is opened, open fog dispersal pipeline, make whole followingRing water enters respectively several finned heat exchangers by the connection of pipeline and falls back to the water distribution system in tower, warp againShower nozzle sprays to packing section and carries out cooling. In this process, due to the running of blower fan of cooling tower, make tower new outwardA fresh air part is entered in tower by the clammy air inlet of tower bottom, carries out heat exchange in packing section and hot water,Recirculated water is obtained cooling, the damp-heat air simultaneously forming approaches saturation state substantially to be continued to rise in tower;And the dry and cold air inlet that another part fresh air is opened through top enters finned tube exchanger, in finned tubeThe heat that circulating hot water distributes exchanges, makes it to form to enter in tower with the unsaturated dry air of temperature,Now, converge and finally become unsaturated air by outside blower fan eliminating tower with the damp and hot saturated air of continuous rising,Thereby reach the effect that reduces misty rain. But in actual operation, often need artificial Real Time Observation coolingTower produces the situation of white mist and adjusts in real time, has also reduced the demist of cooling tower when aggravation labour intensityEfficiency.
Summary of the invention
Technical problem to be solved by this invention is: in order to overcome the above-mentioned problems in the prior art, existingA kind of automatic defrosting control system of cooling tower is provided, realizes unmanned automation fog dispersal and control.
The present invention solves the technical scheme that its technical problem will adopt: a kind of automatic defrosting control of cooling towerSystem processed, the data analysis module that this control system comprises data acquisition module, is connected with data acquisition moduleAnd the control module being connected with data analysis module, described data acquisition module is used for gathering cooling tower air-outMouthful humiture parameter, environment humiture parameter, enter tower cold dry air air quantity parameter and enter the clammy air of towerAir quantity parameter, described data analysis module has or not misty rain for the supplemental characteristic that receives data acquisition moduleJudgement or operating mode tentative calculation, described control module for receive the signal of data analysis module and control cold dry air,The keying of entering tower air quantity and the first pipeline, the second pipeline of clammy air.
Further, described data acquisition module comprises and is arranged on air outlet of cooling tower place and cooling for gatheringThe first Temperature Humidity Sensor of the humiture parameter of tower air outlet, be arranged in environment and for gathering environmentThe second Temperature Humidity Sensor of humiture parameter, be arranged on cold dry air air inlet place and dry for gathering into towerThe first air flow sensor of cold air air quantity parameter and be arranged on clammy air air inlet place and for gathering into towerThe second air flow sensor of clammy air air quantity parameter.
Further, in described data analysis module, be provided with memory cell, for storing the first air flow sensorSupplemental characteristic with the second air flow sensor collection.
Further, also comprise the dry and cold louver of being located on cold dry air air inlet, described dry and cold tune windDevice comprises the first motor and the first air feed shutter being connected with the first motor, and described control module can be passed throughThe anglec of rotation of Long-distance Control the first motor regulates the aperture of the first air feed shutter, and then control cold dry airEnter tower air quantity.
Further, also comprise the clammy louver of being located on clammy air air inlet, described clammy tune windDevice comprises the second motor and the second air feed shutter being connected with the second motor, and described control module can be passed throughThe anglec of rotation of Long-distance Control the second motor regulates the aperture of the second air feed shutter, and then controls clammy airEnter tower air quantity.
Further, on described the first pipeline, be provided with the first electrically operated valve, described control module can be long-rangeControl the keying of the first electrically operated valve.
Further, on described the second pipeline, be provided with the second electrically operated valve, described control module can be long-rangeControl the keying of the second electrically operated valve.
Further, also comprise PLC switch board, described control module is located on PLC switch board.
Further, described the first Temperature Humidity Sensor and the second Temperature Humidity Sensor are DHT11 humitureSensor.
Further, described the first air flow sensor and the second air flow sensor are KGF2 air flow sensor.
The invention has the beneficial effects as follows: the automatic defrosting control system of a kind of cooling tower of the present invention, data acquisitionCollection module is transferred to the humiture parameter of the humiture parameter at the air outlet of cooling tower place collecting and environmentData analysis module, according to saturated air enthalpy, wet curve map judgement has or not misty rain judgement and work to data analysis moduleCondition tentative calculation, and then receive the signal of data analysis module and control cold dry air, clammy air by control moduleEnter tower air quantity, realize and automatically control demist object. The automatic defrosting control system of cooling tower of the present invention,Reduce hand labor intensity, realized unmanned control demist, greatly improved demist efficiency.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structured flowchart of the automatic defrosting control system of a kind of cooling tower of the present invention;
Fig. 2 is saturated air psychrometric chart;
Fig. 3 is the control flow chart of the automatic defrosting control system of a kind of cooling tower of the present invention.
In figure: 100, data acquisition module, 101, the first Temperature Humidity Sensor, 102, the second humiture passesSensor, 103, the first air flow sensor, 104, the second air flow sensor, 200, data analysis module, 201,Memory cell, 300, PLC switch board, 301, control module, 400, dry and cold louver, 401, firstMotor, 402, the first air feed shutter, 500, clammy louver, 501, the second motor, 502, secondAir feed shutter, 600, the first pipeline, 601, the first electrically operated valve, 700, the second pipeline, 700, secondElectrically operated valve.
Detailed description of the invention
The present invention is described in detail by reference to the accompanying drawings now. This figure is the schematic diagram of simplifying, only with the side of signalFormula illustrates basic structure of the present invention, and therefore it only shows the formation relevant with the present invention.
Please refer to shown in Fig. 1, the automatic defrosting control system of a kind of cooling tower of the present invention, it comprises dataAcquisition module 100, the data analysis module 200 being connected with data acquisition module 100 and with data analysis mouldThe control module 301 that piece 200 connects, data analysis module 200 is for receiving the ginseng of data acquisition module 100Logarithmic data has or not misty rain judgement or operating mode tentative calculation, and control module 301 is for receiving data analysis module 200Signal and control cold dry air, clammy air enter tower air quantity and the first pipeline 600, the second pipeline 700Keying. Concrete, data analysis module 200 is the supplemental characteristic equalization receiving in a period of time,Carry out data analysis according to the wet curve map of saturated air enthalpy.
Wherein, data acquisition module 100 comprises: be arranged on air outlet of cooling tower place and for gathering cooling towerThe first Temperature Humidity Sensor 101 of the humiture parameter of air outlet, be arranged in environment and for gathering environmentThe second Temperature Humidity Sensor 102 of humiture parameter, be arranged on cold dry air air inlet place and for gathering into towerThe first air flow sensor 103 of cold dry air air quantity parameter and be arranged on clammy air air inlet place and for adoptingCollect into the second air flow sensor 104 of the clammy air air quantity of tower parameter.
In data analysis module 200, be provided with memory cell 201, for storing the first air flow sensor 103 andThe supplemental characteristic that two air flow sensors 104 gather.
For realize cold dry air to enter tower air quantity controlled, also comprise and be located at dry and cold on cold dry air air inletLouver 400, dry and cold tune wind fill 400 comprise the first motor 401 be connected with the first motor 401 firstAir feed shutter 402, control module 301 can the anglec of rotation by Long-distance Control the first motor 401 regulates theThe aperture of one air feed shutter 402, so control cold dry air enter tower air quantity.
For realize clammy air to enter tower air quantity controlled, also comprise and be located at clammy on clammy air air inletLouver 500, clammy louver 500 comprise the second motor 501 be connected with the second motor 501Two air feed shutters 502, control module 301 can regulate by the anglec of rotation of Long-distance Control the second motor 501The aperture of the second air feed shutter 502, so control clammy air enter tower air quantity.
Open and close controlledly in order to realize the first pipeline 600, on the first pipeline 600, be provided with the first electrically operated valve 601,Control module 301 can Long-distance Control the first electrically operated valve 601 keying.
In order to realize the keying of the second pipeline 700, on the second pipeline 700, be provided with the second electrically operated valve 701,Control module 301 can Long-distance Control the second electrically operated valve 701 keying.
In the time of needs demist, the first electrically operated valve 601 is opened, and the second electric machine valve 701 is closed; When not needingWhile wanting demist, the second electrically operated valve 701 is opened, and the first electrically operated valve 601 is closed.
Further, above-mentioned control module 301 is located on a PLC switch board 300.
As preferably, the first Temperature Humidity Sensor 101 and the second Temperature Humidity Sensor 102 are DHT11 temperatureHumidity sensor. This sensor cost is low, can effectively reduce production costs.
As preferably, the first air flow sensor 103 and the second air flow sensor 104 are KGF2 air quantity sensingDevice. This sensor good airproof performance and can comparatively working under rugged environment, efficient stable, service lifeLong.
First obtain in environment by data acquisition module 100 monitoring and the air themperature of air outlet of cooling tower and wetDegree, gathers the supplemental characteristic in a period of time.
Data analysis module 200 has after receiving the supplemental characteristic that data acquisition module 100 collectsTwo kinds of computation schemas, one is to have or not misty rain judgement, another kind is operating mode tentative calculation.
Have or not misty rain judgement: as shown in Figure 2, assumptions' environment air condition value is A point, chimney fan air shapeState point is B point, if AB line is below saturated enthalpy wets curve, data analysis module 200 is judgedAir port place will be without misty rain, and no signal output regulates; If AB line is above the wet curve of saturated enthalpy, in air-outMouth place will form misty rain, will carry out signal output, and control module 301 is controlled.
Operating mode tentative calculation: calculate the dry and cold tune wind dress under the cooling tower state of substitution last layer operating mode by programPut 400, the intake of clammy louver 500, according to the temperature and humidity of current environment air, by coldBut tower process calculates, and calculates the temperature and humidity of cooling tower chimney fan place air, again carries out misty rain judgement.
In the present embodiment, can there are 5 kinds of operating modes below in this control system:
Operating mode 1: not demist of cooling tower state, the second electrically operated valve 701 on the second pipeline 700 is opened, theThe first electrically operated valve 601 on one pipeline 600 is closed, dry and cold louver 400 complete shut-downs, clammy tune wind dressPut 500 standard-sized sheets;
Operating mode 2: cooling tower demist state, the second electrically operated valve 701 on the second pipeline 700 is closed, and firstThe first electrically operated valve 601 on pipeline 600 is opened, and dry and cold louver 400 is half-open, clammy louver500 standard-sized sheets;
Operating mode 3: cooling tower demist state, the second electrically operated valve 701 on the second pipeline 700 is closed, and firstThe first electrically operated valve 601 on pipeline 600 is opened, dry and cold louver 400 standard-sized sheets, clammy louver500 standard-sized sheets;
Operating mode 4: cooling tower demist state, the second electrically operated valve 701 on the second pipeline 700 is closed, and firstThe first electrically operated valve 601 on pipeline 600 is opened, dry and cold louver 400 standard-sized sheets, clammy louver500 is half-open;
Operating mode 5: cooling tower demist state, the second electrically operated valve 701 on the second pipeline 700 is closed, and firstThe first electrically operated valve 601 on pipeline 600 is opened, dry and cold louver 400 standard-sized sheets, clammy louver500 complete shut-downs.
In Fig. 3, the adjustment process of status adjustment 1-8 is controlled by control module 301, is respectively:
Status adjustment 1: open the first electrically operated valve 601 on the first pipeline 600, close the second pipeline 700On the second electrically operated valve 701, dry and cold louver 400 is half-open, clammy louver 500 standard-sized sheets;
Status adjustment 2: dry and cold louver 400 standard-sized sheets, clammy louver 500 standard-sized sheets;
Status adjustment 3: dry and cold louver 400 standard-sized sheets, clammy louver 500 is half-open;
Status adjustment 4: dry and cold louver 400 standard-sized sheets, clammy louver 500 complete shut-downs;
Status adjustment 5: dry and cold louver 400 standard-sized sheets, clammy louver 500 is half-open;
Status adjustment 6: dry and cold louver 400 standard-sized sheets, clammy louver 500 standard-sized sheets;
Status adjustment 7: dry and cold louver 400 is half-open, clammy louver 500 standard-sized sheets;
Status adjustment 8: close the first electrically operated valve 601 on the first pipeline 600, open the second pipeline 700On the second electrically operated valve 701, dry and cold louver 400 complete shut-downs, clammy louver 50 standard-sized sheets.
The course of work of the automatic defrosting control system of cooling tower of the present invention is described: first below in conjunction with Fig. 3Carry out operating mode 1 by control module 301, after a period of time, data analysis module 200 is by receiving data acquisitionThe supplemental characteristic of collection module 100 carries out misty rain judgement, if without misty rain, maintains operating mode 1, if there is misty rain,Regulate 1 instruction by control module 301 executing states, enter operating mode 2; Supervised by data acquisition module 100 againSurvey, data analysis module 200 carries out misty rain judgement, if without misty rain, maintains operating mode 2, then carries out againMisty rain judgement, if repeatedly judged without misty rain, carries out operating mode tentative calculation, if carry out status adjustment 8 without misty rain,Get back to operating mode 1, if there is misty rain to maintain operating mode 2. The adjusting of rest working conditions is similar to said process, here notRepeat one by one again.
The automatic defrosting control system of cooling tower of the present invention, the tower mouth humiture and the ambient temperature and humidity that collect,That automatically controls dry and cold, clammy air enters tower air quantity, has reduced hand labor intensity, has realized unmanned controlDemist, has improved demist efficiency greatly.
Taking above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, relevant workDo personnel and can, not departing from scope of the present invention, carry out various change and amendment completely. Send out for thisBright technical scope is not limited to the content on description, must determine it according to claim scopeTechnical scope.
Claims (10)
1. an automatic defrosting control system for cooling tower, is characterized in that: comprise data acquisition module(100) data analysis module (200) and and the data analysis that, are connected with data acquisition module (100)The control module (301) that module (200) connects, described data acquisition module (100) is cooling for gatheringThe humiture parameter of tower air outlet, the humiture parameter of environment, enter tower cold dry air air quantity parameter and enter tower wetCold air air quantity parameter, described data analysis module (200) is for receiving data acquisition module (100)Supplemental characteristic has or not misty rain judgement or operating mode tentative calculation, and described control module (301) is divided for receiving dataAnalyse the signal of module (200) and control cold dry air, clammy air enter tower air quantity and the first pipeline (600),The keying of the second pipeline (700).
2. the automatic defrosting control system of a kind of cooling tower as claimed in claim 1, is characterized in that: instituteStating data acquisition module (100) comprises and is arranged on air outlet of cooling tower place and for gathering air outlet of cooling towerFirst Temperature Humidity Sensor (101) of humiture parameter, be arranged in environment and for gathering the warm and humid of environmentSecond Temperature Humidity Sensor (102) of degree parameter, be arranged on cold dry air air inlet place and for gathering into towerFirst air flow sensor (103) of cold dry air air quantity parameter and be arranged on clammy air air inlet place and forGather into second air flow sensor (104) of the clammy air air quantity of tower parameter.
3. the automatic defrosting control system of a kind of cooling tower as claimed in claim 2, is characterized in that: instituteState in data analysis module (200) and be provided with memory cell (201), for storing the first air flow sensor (103)Supplemental characteristic with the second air flow sensor (104) collection.
4. the automatic defrosting control system of a kind of cooling tower as claimed in claim 1, is characterized in that: alsoComprise the dry and cold louver (400) of being located on cold dry air air inlet, described dry and cold louver (400)Comprise the first motor (401) and the first air feed shutter (402) being connected with the first motor (401), described inControl module (301) can regulate the first air intake by the anglec of rotation of Long-distance Control the first motor (401)The aperture of blinds (402), so control cold dry air enter tower air quantity.
5. the automatic defrosting control system of a kind of cooling tower as claimed in claim 4, is characterized in that: alsoComprise the clammy louver (500) of being located on clammy air air inlet, described clammy louver (500)Comprise the second motor (501) and the second air feed shutter (502) being connected with the second motor (501), described inControl module (301) can regulate the second air intake by the anglec of rotation of Long-distance Control the second motor (501)The aperture of blinds (502), so control clammy air enter tower air quantity.
6. the automatic defrosting control system of a kind of cooling tower as claimed in claim 5, is characterized in that: instituteState on the first pipeline (600) and be provided with the first electrically operated valve (601), described control module (301) canThe keying of Long-distance Control the first electrically operated valve (601).
7. the automatic defrosting control system of a kind of cooling tower as claimed in claim 6, is characterized in that: instituteState on the second pipeline (700) and be provided with the second electrically operated valve (701), described control module (301) canThe keying of Long-distance Control the second electrically operated valve (701).
8. the automatic defrosting control system of a kind of cooling tower as claimed in claim 1, is characterized in that: alsoComprise PLC switch board (300), described control module (301) is located on PLC switch board (300).
9. the automatic defrosting control system of a kind of cooling tower as claimed in claim 2, is characterized in that: instituteState the first Temperature Humidity Sensor (101) and the second Temperature Humidity Sensor (102) and be DHT11 humiture biographySensor.
10. the automatic defrosting control system of a kind of cooling tower as claimed in claim 2, is characterized in that:Described the first air flow sensor (103) and the second air flow sensor (104) are KGF2 air flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184769.2A CN105605941B (en) | 2016-03-28 | 2016-03-28 | A kind of automatic defrosting control system of cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184769.2A CN105605941B (en) | 2016-03-28 | 2016-03-28 | A kind of automatic defrosting control system of cooling tower |
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| CN105605941A true CN105605941A (en) | 2016-05-25 |
| CN105605941B CN105605941B (en) | 2017-11-03 |
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| CN201610184769.2A Active CN105605941B (en) | 2016-03-28 | 2016-03-28 | A kind of automatic defrosting control system of cooling tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440853A (en) * | 2016-10-31 | 2017-02-22 | 新菱空调(佛冈)有限公司 | Cooling tower outlet air anti-fogging energy consumption optimization method based on firefly algorithm |
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| US20020060375A1 (en) * | 1998-05-11 | 2002-05-23 | Davis John Albert | Cooling tower construction |
| JP2003320205A (en) * | 2002-05-07 | 2003-11-11 | Toyota Auto Body Co Ltd | Filter apparatus and cooling column equipped therewith |
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| CN105043160A (en) * | 2015-07-27 | 2015-11-11 | 大连理工大学 | Air-intake control device for condensation module of cooling tower |
| CN205482442U (en) * | 2016-03-28 | 2016-08-17 | 江苏海鸥冷却塔股份有限公司 | Automatic defogging control system of cooling tower |
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2016
- 2016-03-28 CN CN201610184769.2A patent/CN105605941B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020060375A1 (en) * | 1998-05-11 | 2002-05-23 | Davis John Albert | Cooling tower construction |
| JP2003320205A (en) * | 2002-05-07 | 2003-11-11 | Toyota Auto Body Co Ltd | Filter apparatus and cooling column equipped therewith |
| CN1699908A (en) * | 2005-06-27 | 2005-11-23 | 董京甫 | Method for reducing cooling tower water evaporation loss and apparatus for implementing the method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106440853A (en) * | 2016-10-31 | 2017-02-22 | 新菱空调(佛冈)有限公司 | Cooling tower outlet air anti-fogging energy consumption optimization method based on firefly algorithm |
| CN106440853B (en) * | 2016-10-31 | 2018-07-06 | 新菱空调(佛冈)有限公司 | A kind of antifog energy consumption optimization method of cooling tower outlet air based on glowworm swarm algorithm |
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| CN105605941B (en) | 2017-11-03 |
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