CN104165546A - Cooling tower water and energy saving remote monitoring system and monitoring method thereof - Google Patents
Cooling tower water and energy saving remote monitoring system and monitoring method thereof Download PDFInfo
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- CN104165546A CN104165546A CN201410400126.8A CN201410400126A CN104165546A CN 104165546 A CN104165546 A CN 104165546A CN 201410400126 A CN201410400126 A CN 201410400126A CN 104165546 A CN104165546 A CN 104165546A
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Abstract
The invention relates to a cooling tower water and energy saving remote monitoring system and a monitoring method thereof. The cooling tower water and energy saving remote monitoring system comprises a variable frequency fan, a shutter angle regulation mechanism, a tower outlet water temperature sensor, a PID controller and a central control board, wherein the variable frequency fan is arranged at the top of a cooling tower, the shutter angle regulation mechanism is arranged at the position of a lower air inlet shutter, and the tower outlet water temperature sensor is arranged in a circulating water outlet pipe. The variable frequency fan, the shutter angle regulation mechanism and the tower outlet water temperature sensor are electrically connected with the PID controller respectively, the PID controller is arranged on the site of the cooling tower or a remote control room, the central control board is arranged in the remote control room, and the PID controller is in bidirectional connection with the central control board. The monitoring method comprises the following steps of (1) setting a target value of the PID controller; (2) feeding back a water temperature signal to the PID controller in real time; (3) inputting a control signal transmitted by the PID controller into corresponding unit; (4) regulating the rotation speed and the angle of the shutter in real time. The cooling tower water and energy saving remote monitoring system and the monitoring method of the cooling tower water and energy saving remote monitoring system can be widely applied to technical fields of metallurgy, petrochemical engineering, textile, air conditioning and the like.
Description
Technical field
The present invention relates to a kind of cooling tower monitoring system and method for supervising thereof, particularly about a kind of cooling tower save water and energy long distance control system and method for supervising thereof.
Background technology
The operation principle of conventional mechanical aerating and cooling tower is the air filler of flowing through under the suction of blower fan, carries out heat exchange with the recirculated water that carries Yu Wen being sprayed on filler, utilizes the evaporator strip of recirculated water to walk heat, reduces the temperature of recirculated water.It is low that this method has cost, the feature of good cooling effect, but circulation evaporation of water can bring a large amount of losses of recirculated water.The Chinese Patent Application No. that inventor invents is in earlier stage " a kind of energy-saving environmental-protection cooling tower " that 200610088863.4 " a kind of antifreezing and fogging water-saving cooling tower " and Chinese Patent Application No. are 200620022940.1, series cooling tower is by improving structure and the operation principle of traditional cooling tower, enterprising air port and upper air heat exchanger have been increased, reduced the cooling load of cooling tower filler section, reduced evaporative water loss, can play the effect of water saving, and lower air inlet intake is less, water-saving result is better.
But because cooling tower is that the meteorologic parameter of take in a year the hottest several days is the operating mode according to design substantially, therefore in actual motion, most of cooling towers use tower coolant-temperature gage lower than required chilling temperature, but blower fan is still in full load condition, be that intake is excessive, and then cause the extraneoas loss of electric energy and water.And existing control system for cooling tower, only can control the start and stop of blower fan or the rotating speed of adjusting blower fan according to water temperature, can not the operation of cooling tower be regulated according to the structure of cooling tower, cannot reduce the loss of recirculated water.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of basis and go out tower water temperature and automatically in real time control the cooling tower of rotation speed of fan and air inlet shutter angle save water and energy long distance control system and method for supervising thereof.
For achieving the above object, the present invention takes following technical scheme: a kind of cooling tower long distance control system of saving water and energy, is characterized in that: it comprise cooling tower frequency conversion fan, shutter angle adjusting mechanism, go out tower cooling-water temperature sensor, PID controller and central control board; Described frequency conversion fan is arranged on the top of described cooling tower, described shutter angle adjusting mechanism is arranged on the lower air inlet shutter place of described cooling tower, describedly go out tower cooling-water temperature sensor and be arranged in the circulating water outlet pipe of described cooling tower, described frequency conversion fan, shutter angle adjusting mechanism and go out tower cooling-water temperature sensor and be electrically connected to respectively described PID controller, described PID controller is arranged on cooling tower scene or remote control room, and described central control board is arranged on remote control room; Described PID controller is connected so that wired or wireless mode is two-way with described central control board by communication interface.
The save water and energy method for supervising of long distance control system of a kind of cooling tower, it comprises the following steps: 1) staff is set as the desired value of described PID controller by described central control board by the adjustment of technique cooling requirement temperature, and sends to described PID controller; 2) described in, go out the temperature that tower cooling-water temperature sensor Real-Time Monitoring goes out tower recirculated water, and give described PID controller by real-time water temperature signal feedback; 3) described PID controller, according to desired value, carries out PID computing to the real-time water temperature signal receiving, and operation result is converted into control signal and sends to described frequency conversion fan and shutter angle adjusting mechanism; 4) described frequency conversion fan receives after control signal, adjusts in real time the rotating speed of described frequency conversion fan, and then adjust in real time power consumption by changing power frequency; Meanwhile, described shutter angle adjusting mechanism receives after control signal, the angle of the lower air inlet shutter by the described cooling tower of real-time adjustment, and then adjust in real time the intake of the lower air inlet of described cooling tower, to adjust the loss amount of recirculated water.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is owing to having carried out PID control to going out tower water temperature, according to going out tower water temperature, automatically control in real time rotation speed of fan and air inlet shutter angle, make to draw that tower water temperature keeps stable, avoided fluctuating temperature on industrial impact.2, the present invention, owing to adopting PID controller to control frequency conversion fan rotating speed, has reduced the operate power of frequency conversion fan, has saved electric energy.3, the present invention, owing to adopting lower air inlet shutter angle adjusting mechanism to control cooling tower intake, has reduced filler cooling load, has reduced cooling-tower circulating water loss.4, the present invention can remote monitoring cooling tower operation conditions due to central control board, facilitates staff to monitor, control cooling tower operation.Thereby the present invention can be widely used in a plurality of technical fields such as metallurgy, petrochemical industry, weaving and air-conditioning.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of the embodiment of the present invention one
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, monitoring system of the present invention comprise cooling tower 1 frequency conversion fan 2, shutter angle adjusting mechanism 3, go out tower cooling-water temperature sensor 4, PID controller 5 and central control board 6.Frequency conversion fan 2 is arranged on the top of cooling tower 1, shutter angle adjusting mechanism 3 is arranged on the lower air inlet shutter place of cooling tower 1, go out in the circulating water outlet pipe that tower cooling-water temperature sensor 4 is arranged on cooling tower 1, frequency conversion fan 2, shutter angle adjusting mechanism 3 and go out tower cooling-water temperature sensor 4 and be electrically connected to respectively PID controller 5, PID controller 5 is arranged on cooling tower scene or remote control room, and central control board 6 is arranged on remote control room.PID controller 5 is connected so that wired or wireless mode is two-way with central control board 6 by communication interface.
Method for supervising of the present invention comprises the following steps:
1) staff is set as the desired value of PID controller 5 by central control board 6 by the adjustment of technique cooling requirement temperature, and sends to PID controller 5;
2) go out the temperature that tower cooling-water temperature sensor 4 Real-Time Monitorings go out tower recirculated water, and by real-time water temperature signal feedback to PID controller 5;
3) PID controller 5, according to desired value, carries out PID computing to the real-time water temperature signal receiving, and operation result is converted into control signal and sends to frequency conversion fan 2 and shutter angle adjusting mechanism 3;
4) frequency conversion fan 2 receives after control signal, adjusts in real time the rotating speed of frequency conversion fan 2, and then adjust in real time power consumption by changing power frequency; Simultaneously, shutter angle adjusting mechanism 3 receives after control signal, by the angle of 1 time air inlet shutter of real-time adjustment cooling tower, and then adjusts in real time the intake of 1 time air inlet of cooling tower, to adjust the loss amount of recirculated water, the object that finally realizes out the stable of tower water temperature and save energy.
Enumerate an embodiment below.
As shown in Figure 2, adopt water-saving and environmental protection cooling tower or mechanical-draft cooling tower as cooling tower 1, frequency conversion fan 2 is arranged on the top of cooling tower 1, shutter angle adjusting mechanism 3 is arranged on the lower air inlet shutter place of cooling tower 1, go out in the circulating water outlet pipe that tower cooling-water temperature sensor 4 is arranged on cooling tower 1, PID controller 5 is arranged on cooling tower scene or remote control room.The method for supervising of the present embodiment comprises the following steps:
1) staff is the desired value of PID controller 5 by central control board 6 by technique cooling requirement Temperature Setting, and sends to PID controller 5;
2) go out the temperature that tower cooling-water temperature sensor 4 Real-Time Monitorings go out tower recirculated water, and by real-time water temperature signal feedback to PID controller 5;
3) PID controller 5, according to desired value, carries out PID computing to the real-time water temperature signal receiving, and operation result is converted into control signal and sends to frequency conversion fan 2 and shutter angle adjusting mechanism 3;
4) frequency conversion fan 2 receives after control signal, adjusts in real time the rotating speed of frequency conversion fan 2, and then adjust in real time power consumption by changing power frequency; Simultaneously, shutter angle adjusting mechanism 3 receives after control signal, by the angle of 1 time air inlet shutter of real-time adjustment cooling tower, and then adjusts in real time the intake of 1 time air inlet of cooling tower, to adjust the loss amount of recirculated water, the object that finally realizes out the stable of tower water temperature and save energy.
The various embodiments described above are only for illustrating the present invention; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (2)
1. the cooling tower long distance control system of saving water and energy, is characterized in that: it comprise cooling tower frequency conversion fan, shutter angle adjusting mechanism, go out tower cooling-water temperature sensor, PID controller and central control board; Described frequency conversion fan is arranged on the top of described cooling tower, described shutter angle adjusting mechanism is arranged on the lower air inlet shutter place of described cooling tower, describedly go out tower cooling-water temperature sensor and be arranged in the circulating water outlet pipe of described cooling tower, described frequency conversion fan, shutter angle adjusting mechanism and go out tower cooling-water temperature sensor and be electrically connected to respectively described PID controller, described PID controller is arranged on cooling tower scene or remote control room, and described central control board is arranged on remote control room; Described PID controller is connected so that wired or wireless mode is two-way with described central control board by communication interface.
2. adopt as claimed in claim 1 the cooling tower of the monitoring system long-distance monitoring method of saving water and energy, it comprises the following steps:
1) staff is set as the desired value of described PID controller by described central control board by the adjustment of technique cooling requirement temperature, and sends to described PID controller;
2) described in, go out the temperature that tower cooling-water temperature sensor Real-Time Monitoring goes out tower recirculated water, and give described PID controller by real-time water temperature signal feedback;
3) described PID controller, according to desired value, carries out PID computing to the real-time water temperature signal receiving, and operation result is converted into control signal and sends to described frequency conversion fan and shutter angle adjusting mechanism;
4) described frequency conversion fan receives after control signal, adjusts in real time the rotating speed of described frequency conversion fan, and then adjust in real time power consumption by changing power frequency; Meanwhile, described shutter angle adjusting mechanism receives after control signal, the angle of the lower air inlet shutter by the described cooling tower of real-time adjustment, and then adjust in real time the intake of the lower air inlet of described cooling tower, to adjust the loss amount of recirculated water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410400126.8A CN104165546B (en) | 2014-08-14 | 2014-08-14 | A kind of cooling tower save water and energy long distance control system and method for supervising thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410400126.8A CN104165546B (en) | 2014-08-14 | 2014-08-14 | A kind of cooling tower save water and energy long distance control system and method for supervising thereof |
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| CN104165546B CN104165546B (en) | 2016-05-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043160A (en) * | 2015-07-27 | 2015-11-11 | 大连理工大学 | Air-intake control device for condensation module of cooling tower |
| CN108362137A (en) * | 2018-02-02 | 2018-08-03 | 福建工程学院 | A kind of novel high-efficiency and energy-saving flows over rectangular cooling tower and its control method |
| CN113503765A (en) * | 2021-07-13 | 2021-10-15 | 张家港盈鼎气体有限公司 | Automatic control method for water temperature of circulating water in winter |
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| CN202470811U (en) * | 2011-12-30 | 2012-10-03 | 江苏海鸥冷却塔股份有限公司 | Water-saving and environment-friendly cooling tower |
| CN102706209A (en) * | 2012-05-10 | 2012-10-03 | 浙江上城科技有限公司 | Constant temperature control system for closed cooling tower |
| CN202734661U (en) * | 2012-08-30 | 2013-02-13 | 山东华能冷却技术股份有限公司 | Shutter for closed cooling tower |
| CN203629357U (en) * | 2013-11-26 | 2014-06-04 | 广州览讯科技开发有限公司 | Environmental-friendly water-saving finned-tube dry and wet cooling tower |
| CN103884200A (en) * | 2014-04-16 | 2014-06-25 | 山西科工龙盛科技有限公司 | Light-duty steel frame structure indirect air cooling tower capable of achieving water conservation and freeze protection |
| CN204165447U (en) * | 2014-08-14 | 2015-02-18 | 清华大学 | A kind of cooling tower is saved water and energy long distance control system |
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2014
- 2014-08-14 CN CN201410400126.8A patent/CN104165546B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202470811U (en) * | 2011-12-30 | 2012-10-03 | 江苏海鸥冷却塔股份有限公司 | Water-saving and environment-friendly cooling tower |
| CN102706209A (en) * | 2012-05-10 | 2012-10-03 | 浙江上城科技有限公司 | Constant temperature control system for closed cooling tower |
| CN202734661U (en) * | 2012-08-30 | 2013-02-13 | 山东华能冷却技术股份有限公司 | Shutter for closed cooling tower |
| CN203629357U (en) * | 2013-11-26 | 2014-06-04 | 广州览讯科技开发有限公司 | Environmental-friendly water-saving finned-tube dry and wet cooling tower |
| CN103884200A (en) * | 2014-04-16 | 2014-06-25 | 山西科工龙盛科技有限公司 | Light-duty steel frame structure indirect air cooling tower capable of achieving water conservation and freeze protection |
| CN204165447U (en) * | 2014-08-14 | 2015-02-18 | 清华大学 | A kind of cooling tower is saved water and energy long distance control system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043160A (en) * | 2015-07-27 | 2015-11-11 | 大连理工大学 | Air-intake control device for condensation module of cooling tower |
| CN105043160B (en) * | 2015-07-27 | 2023-11-14 | 大连理工大学 | Cooling tower condensation module air inlet control device |
| CN108362137A (en) * | 2018-02-02 | 2018-08-03 | 福建工程学院 | A kind of novel high-efficiency and energy-saving flows over rectangular cooling tower and its control method |
| CN113503765A (en) * | 2021-07-13 | 2021-10-15 | 张家港盈鼎气体有限公司 | Automatic control method for water temperature of circulating water in winter |
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| CN104165546B (en) | 2016-05-18 |
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