CN104075614A - Intelligent variable-frequency closed cooling tower - Google Patents
Intelligent variable-frequency closed cooling tower Download PDFInfo
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- CN104075614A CN104075614A CN201410181506.7A CN201410181506A CN104075614A CN 104075614 A CN104075614 A CN 104075614A CN 201410181506 A CN201410181506 A CN 201410181506A CN 104075614 A CN104075614 A CN 104075614A
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Abstract
The invention discloses an intelligent variable-frequency closed cooling tower. The intelligent variable-frequency closed cooling tower comprises a shell, a water collection groove, a heat exchange layer, a condensing coiled tube, a water spraying device, a first fan, a second fan, a variable-frequency water pump, a detection device, an electronic water level controller and a microcomputer control system, wherein the detection device comprises a temperature sensor, a pressure sensor and an electronic water flow controller; the microcomputer control system comprises an execution unit, a detection unit, a storage unit, a prediction unit and a remote communication unit. The intelligent variable-frequency closed cooling tower disclosed by the invention realizes automatic control and intelligent operation on equipment, lowers maintenance difficulty and cost, and achieves remarkable energy-saving and consumption-reducing effects; by virtue of comparison in actual use, the intelligent variable-frequency closed cooling tower disclosed by the invention is capable of reducing about 30% of energy consumption compared with a common closed cooling tower, which is of great significance for the current situation of insufficient resources and short energies of China.
Description
Technical field
The present invention relates to chilled water unit, particularly a kind of intelligent frequency-conversion closed cooling tower.
Background technology
Closed cooling tower is when operation, and when external environment wet-bulb temperature changes, the air quantity of closed cooling tower and the water yield are constant, and cooling water outlet and inlet temperature can change, and makes water temperature depart from setting value.For assurance cooling water system is normally worked, and energy-conservation requirement, just must control the air quantity of closed cooling tower and the water yield.
Summary of the invention
The object of the invention is to overcome the problem of above-mentioned existence, a kind of intelligent frequency-conversion closed cooling tower is provided, it can realize intelligent air quantity and the water yield of controlling closed cooling tower.
The technical scheme that the present invention adopted is for achieving the above object:
A kind of intelligent frequency-conversion closed cooling tower, comprise housing, described housing inner bottom part is provided with water leg, described water leg top is provided with heat exchange layers, described heat exchange layers top is provided with condenser coil, described condenser coil top is provided with liquid distribution, the first blower fan and the second blower fan are fixedly equipped with in the outer upper end of described housing, also comprise variable frequency pump, checkout gear, electronic water level controller and microcomputer control system, described variable frequency pump is placed in water leg bottom, and described variable frequency pump is connected with liquid distribution by pipeline;
Described checkout gear comprises temperature sensor, pressure sensor and electronic water stream amount controller, and the first blower fan, the second blower fan, liquid distribution and heat exchange layers are all installed temperature sensor, and described temperature sensor is all connected with microcomputer control system; Described electronic water stream amount controller is arranged on liquid distribution to the pipeline of variable frequency pump, and pressure sensor is equipped with in described liquid distribution bottom, and pressure sensor is connected with microcomputer control system; Described electronic water level controller is arranged on the bottom of water leg and is connected and connects with microcomputer control system;
Described microcomputer control system comprises performance element, detecting unit, memory cell, forecast unit and telecommunication unit; Memory cell contains unit data and log; Unit data comprises operation principle, basic operation method, maintenance methods; Log comprises logic operation time of unit own, break down number of times and fault content of operational factor, unit in the past: performance element comprises automatic control unit and the security protection unit of unit; Automatic control unit comprises unit control system and centralized control system; Unit control system can be realized control and the safeguard protection of separate unit closed cooling tower, and centralized control system can realize the Centralized Monitoring of many closed cooling towers; Described variable frequency pump, electronic water stream amount controller, the first blower fan and the second blower fan are controlled by microcomputer control system.
Owing to adopting technique scheme, a kind of intelligent frequency-conversion closed cooling tower provided by the invention, compared with prior art has such beneficial effect:
The present invention installs microcomputer control system first on closed cooling tower, and required Fan and pump all adopts frequency conversion type motor simultaneously, makes this Project Product reach intelligent automatic control, simple in structure.The owned microcomputer measuring ability of the present invention, memory function, execution function, forecast function and telecommunications functions.In micro computer, store unit data, user can consult these data at any time.When log occurs again for the fault content occurring in the past, micro computer provides solution automatically, has improved the maintenance efficiency of equipment.
The present invention has not only realized automation control and the intelligent operation of equipment, maintenance difficulties and cost have been reduced, and reached significant effect of energy, by comparison in actual use, the present invention can reduce the energy consumption of 30% left and right than plain edition closed cooling tower.This is for the current inadequate resource of China, and energy starved present situation is significant.
The present invention, by micro-computer technology, frequency conversion and Refrigeration Technique perfect adaptation, has realized intellectuality and the energy-saving of closed cooling tower.Microcomputer control system makes full use of intrinsic advantage, has added closed cooling tower operation troubles management system.Fault Management System is by micro computer operation interface, when closed cooling tower breaks down, prompting abort situation, failure cause, fault handling method, make operating personnel faster to the processing of fault, improved service efficiency and the reliability of operation of closed cooling tower.
Accompanying drawing explanation:
Fig. 1 is perspective view of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is flow chart of the present invention.
The specific embodiment:
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail:
A kind of intelligent frequency-conversion closed cooling tower, as shown in Figure 1, it comprises housing, described housing inner bottom part is provided with water leg 11, described water leg 11 tops are provided with heat exchange layers 10, described heat exchange layers 10 tops are provided with condenser coil 9, described condenser coil 9 tops are provided with liquid distribution 12, the first blower fan 1 and the second blower fan are fixedly equipped with in the outer upper end of described housing, also comprise variable frequency pump 5, checkout gear, electronic water level controller 4 and microcomputer control system 2, described variable frequency pump 5 is placed in water leg 11 bottoms, described variable frequency pump 5 is connected with liquid distribution 12 by pipeline.
Described checkout gear comprises temperature sensor 7, pressure sensor 8 and electronic water stream amount controller 6, the first blower fan 1, the second blower fan, liquid distribution 12 and heat exchange layers 10 are all installed temperature sensor 7, and described temperature sensor 7 is all connected with microcomputer control system 2; Described electronic water stream amount controller 6 is arranged on liquid distribution 12 to the pipeline of variable frequency pump 5, and pressure sensor 8 is equipped with in described liquid distribution 12 bottoms, and pressure sensor 8 is connected with microcomputer control system 2; Described electronic water level controller 4 is arranged on the bottom of water leg 11 and is connected and connects with microcomputer control system 2; Described the first blower fan 1 and the second blower fan are frequency conversion axial flow fan.
Described microcomputer control system 2 comprises performance element, detecting unit, memory cell, forecast unit and telecommunication unit; Memory cell contains unit data and log; Unit data comprises operation principle, basic operation method, maintenance methods; Log comprises logic operation time of unit own, break down number of times and fault content of operational factor, unit in the past: performance element comprises automatic control unit and the security protection unit of unit; Automatic control unit comprises unit control system and centralized control system; Unit control system can be realized control and the safeguard protection of separate unit closed cooling tower, and centralized control system can realize the Centralized Monitoring of many closed cooling towers; Described variable frequency pump 5, electronic water stream amount controller 6, the first blower fan 1 and the second blower fan are controlled by microcomputer control system 2.
During work, as shown in Figure 1, the high-temperature water of ambient systems enters in condenser coil 9, carries out sufficient heat exchange with the spray water and air outside condenser coil 9, by high temperature, is condensed into gradually low temperature, via liquid collector, flows out, and is expelled back in ambient systems.It is upper that the super-strong wind-power of the first blower fan 1 makes shower water cover condenser coil 9 surfaces completely, and water is borrowed wind, and heat exchange efficiency significantly improves.After shower water and absorption of air heat, temperature raises, part water liquid state becomes gaseous state, by evaporation latent heat, taken away a large amount of heat, water in hot-air is stopped by water fender, collect in PvC heat exchange layers 10, unevaporated water also flows in PvC heat exchange layers 10 simultaneously, by variable frequency pump 5, is delivered in liquid distribution 12 and is continued to circulate.Being lost to airborne moisture is supplemented by electronic water level controller 4 control demineralized water treatment systems.Microcomputer control system 2 changes according to outdoor wet-bulb temperature and thermic load changes adjustment the first blower fan 1 motor, pump motor frequency is controlled air quantity, the water yield, when the rising of environment wet-bulb temperature or the increase of system thermic load, leaving water temperature will rise, at this moment need to increase air quantity and the shower water flow of blower fan, air quantity, discharge are increased, maintain leaving water temperature constant, otherwise, when the reduction of environment wet-bulb temperature or the minimizing of system thermic load, air quantity, the discharge of blower fan also decrease.Make leaving water temperature maintain constant design load, the heat exhaust that makes closed cooling tower constantly matches with the required heat removal capacity of system, thereby reaches energy-saving effect.
For closed cooling tower heat exhaust, when closed cooling tower is under full-load operation condition, when outdoor wet-bulb temperature is the highest, air quantity, the water yield will be worked under maximum stream flow state.When condenser heat load reduces, or outdoor wet-bulb temperature is when reduce, and blower motor, pump motor are automatically reduced rotating speed, reduced air quantity, the water yield by frequency converter, to reach, save energy consumption buffalo gnat object.
When there is abnormal work state in closed cooling tower, can forecast in time, report to the police, also can look the degree that situation worsens, take corresponding safeguard measure, Accident prevention occurs, and makes the more safe and reliable operation of closed cooling tower.
For example certain user installation 3 playscript with stage directions invention flow is 1300 tons, total flow is the closed cooling tower of 3900 tons, closed cooling tower is in running, and by being arranged on temperature sensor and the pressure sensor at air intake place and entery and delivery port place, control system calculates the required heat removal capacity of system.When extraneous wet-bulb temperature declines and the required thermic load of system is reduced to 2600 ton hours, control system will stop a closed cooling tower job automatically, stop frequency conversion fan and the variable frequency pump of condenser itself: when the required thermic load of system rises to 2600 ton hours, reset this closed cooling tower simultaneously; When the required thermic load of system is down to 1300 ton hours, system just stops two closed cooling tower work, stop this two blower and water pump work of closing unit itself, when the required thermic load of system rises to 1300 ton hours, control system is just reset a closed cooling tower simultaneously.The like, by with upper type, realized between many closed cooling towers and not only to have coordinated but also economic operation.Simultaneously, closed cooling tower is in running, and each unit can, according to the variation of the variation of external environment wet-bulb temperature and the required thermic load of compressor, regulate the duty of frequency conversion fan and variable frequency pump automatically, and make its leaving water temperature maintain setting value, to reach energy-conservation effect.
Claims (2)
1. an intelligent frequency-conversion closed cooling tower, it is characterized in that: comprise housing, described housing inner bottom part is provided with water leg, described water leg top is provided with heat exchange layers, described heat exchange layers top is provided with condenser coil, described condenser coil top is provided with liquid distribution, the first blower fan and the second blower fan are fixedly equipped with in the outer upper end of described housing, also comprise variable frequency pump, checkout gear, electronic water level controller and microcomputer control system, described variable frequency pump is placed in water leg bottom, and described variable frequency pump is connected with liquid distribution by pipeline;
Described checkout gear comprises temperature sensor, pressure sensor and electronic water stream amount controller, and the first blower fan, the second blower fan, liquid distribution and heat exchange layers are all installed temperature sensor, and described temperature sensor is all connected with microcomputer control system; Described electronic water stream amount controller is arranged on liquid distribution to the pipeline of variable frequency pump, and pressure sensor is equipped with in described liquid distribution bottom, and pressure sensor is connected with microcomputer control system; Described electronic water level controller is arranged on the bottom of water leg and is connected and connects with microcomputer control system;
Described microcomputer control system comprises performance element, detecting unit, memory cell, forecast unit and telecommunication unit; Memory cell contains unit data and log; Unit data comprises operation principle, basic operation method, maintenance methods; Log comprises logic operation time of unit own, break down number of times and fault content of operational factor, unit in the past: performance element comprises automatic control unit and the security protection unit of unit; Automatic control unit comprises unit control system and centralized control system; Unit control system can be realized control and the safeguard protection of separate unit closed cooling tower, and centralized control system can realize the Centralized Monitoring of many closed cooling towers; Described variable frequency pump, electronic water stream amount controller, the first blower fan and the second blower fan are controlled by microcomputer control system.
2. a kind of intelligent frequency-conversion closed cooling tower according to claim 1, is characterized in that: described the first blower fan 1 and the second blower fan are frequency conversion axial flow fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410181506.7A CN104075614A (en) | 2014-04-30 | 2014-04-30 | Intelligent variable-frequency closed cooling tower |
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| CN201410181506.7A CN104075614A (en) | 2014-04-30 | 2014-04-30 | Intelligent variable-frequency closed cooling tower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068582A (en) * | 2015-06-01 | 2015-11-18 | 中国电力工程顾问集团西南电力设计院有限公司 | DCS-based high-level water collection cooling tower water level maintaining control method |
| CN107203180A (en) * | 2017-07-20 | 2017-09-26 | 山东旭能环保科技有限公司 | A kind of cooling tower monitoring method, equipment and system |
| CN108519019A (en) * | 2018-05-08 | 2018-09-11 | 江苏华塔冷却技术有限公司 | A kind of cooling tower intelligence water regulating system and its adjusting method |
| CN108548432A (en) * | 2018-04-25 | 2018-09-18 | 国网上海市电力公司 | A kind of cooling tower air inlet fan system |
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2014
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068582A (en) * | 2015-06-01 | 2015-11-18 | 中国电力工程顾问集团西南电力设计院有限公司 | DCS-based high-level water collection cooling tower water level maintaining control method |
| CN105068582B (en) * | 2015-06-01 | 2017-02-22 | 中国电力工程顾问集团西南电力设计院有限公司 | DCS-based high-level water collection cooling tower water level maintaining control method |
| CN107203180A (en) * | 2017-07-20 | 2017-09-26 | 山东旭能环保科技有限公司 | A kind of cooling tower monitoring method, equipment and system |
| CN107203180B (en) * | 2017-07-20 | 2019-06-28 | 山东旭能环保科技有限公司 | A kind of cooling tower monitoring method, equipment and system |
| CN108548432A (en) * | 2018-04-25 | 2018-09-18 | 国网上海市电力公司 | A kind of cooling tower air inlet fan system |
| CN108519019A (en) * | 2018-05-08 | 2018-09-11 | 江苏华塔冷却技术有限公司 | A kind of cooling tower intelligence water regulating system and its adjusting method |
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Application publication date: 20141001 |