CN104567529A - Temperature control system of cooling water of cooling tower - Google Patents
Temperature control system of cooling water of cooling tower Download PDFInfo
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- CN104567529A CN104567529A CN201410350528.1A CN201410350528A CN104567529A CN 104567529 A CN104567529 A CN 104567529A CN 201410350528 A CN201410350528 A CN 201410350528A CN 104567529 A CN104567529 A CN 104567529A
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- temperature
- cooling tower
- cooling
- frequency converter
- control system
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Abstract
The invention relates to a temperature control system of the cooling water of a cooling tower. The system comprises a temperature sensor (3), a temperature controller, a frequency converter, a water pump (2), a cooling tower (4) and a condenser (1), wherein the temperature sensor (3) is arranged on a water feeding pipe between the water pump (2) and the condenser (1); the temperature controller is respectively connected to the temperature sensor (3) and the frequency converter through an external circuit; the frequency converter is communicated with a fan in the cooling tower (4) via a circuit. Compared with the prior art, the temperature control system has the advantages of simple flow, energy saving and consumption reduction, the temperature of the cooling water can be automatically controlled, and the service life of the fan of the cooling tower (4) can be obviously prolonged.
Description
Technical field
The present invention relates to a kind of temperature control system of liquid, especially relate to a kind of temperature control system of cooling tower cooling water.
Background technology
Along with the huge environmental pressure that anxiety and the global warming of world energy sources resource bring, economize energy, protection of the environment has become the very important significant problem in countries in the world.The energy consumption of heating ventilation air-conditioning system occupies the over half of building energy consumption, is wherein used for the energy consumption taken away required for the cooling water of thermic load to occupy greatly.
The cooling water temperature generally entering condenser is 32 DEG C, is 37 DEG C from condenser cooling water temperature out.When ensureing cooling water flow, the task of control system is exactly controlled cooling model tower, makes the cooling water temperature being entered condenser by cooling tower remain on 32 DEG C.But the blower control method mainly blower fan on off control of traditional cooling tower, namely when cooling water temperature is higher, open blower fan, time below water temperature drop to setting value, close blower fan, the temperature of cooling water fluctuates near setting value, is difficult to the continuous adjustment realizing water temperature.
Summary of the invention
Object of the present invention is exactly provide a kind of temperature control system of cooling tower cooling water to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
A kind of temperature control system of cooling tower cooling water, this system comprises temperature sensor, temperature controller, frequency converter, water pump, cooling tower and condenser, described temperature sensor is arranged on the water inlet pipe between water pump and condenser, described temperature controller is switched on temperature sensor and frequency converter by external circuits respectively, and described frequency converter is connected by the blower fan in circuit and cooling tower.
Described temperature controller is provided with PID calculation procedure.
The preferred PT100 temperature sensor of described temperature sensor.
During work, described temperature sensor detects the temperature of condenser water inlet pipe cooling water, temperature simulation amount signal is sent on temperature controller, and contrast with temperature controller preset value, operation result is converted into operation information and feeds back to frequency converter by temperature controller, and frequency converter controls the start and stop of blower fan and the rotating speed of blower fan according to the operation information received, and according to the height of cooling tower leaving water temperature, control the start and stop of frequency converter, to realize the temperature of VFC cooling tower cooling water.
The temperature control system of cooling tower cooling water of the present invention be used for cooling water in heat exchange station provide with handpiece Water Chilling Units in provide cooling water for condenser, take away the heat that refrigerant absorbs, it be connected with condenser or heat exchanger, formation closed loop.
The temperature control system of cooling tower cooling water of the present invention is generally arranged on roof, and blower and water pump must carry out rainproof measure.
Compared with prior art, the present invention has following characteristics:
(1) reduce energy consumption, and can realize temperature automatically controlled;
(2) extend the service life of blower fan, reduce the cost of fan repair or replacing;
(3) significantly can reduce the loss of cooling water, and then reduce the input cost of process quality of cooling water.
Accompanying drawing explanation
Fig. 1 is the temperature control system flow chart of a kind of cooling tower cooling water of the present invention;
Description of symbols in figure:
1-condenser, 2-water pump, 3-temperature sensor, 4-cooling tower.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment:
As shown in Figure 1, a kind of temperature control system of cooling tower cooling water, this system comprises temperature sensor 3, temperature controller, frequency converter, water pump 2, cooling tower 4 and condenser 1, described temperature sensor 3 is arranged on the water inlet pipe between water pump 2 and condenser 1, described temperature controller has PID arithmetic function, and being switched on temperature sensor 3 and frequency converter respectively by external circuits, described frequency converter is connected by the blower fan in circuit and cooling tower 4.In the present embodiment, temperature sensor 3 is PT100 temperature sensor.
During work, PT100 temperature sensor detects the temperature of condenser 1 water inlet pipe cooling water, temperature simulation amount signal is sent on temperature controller, and contrast with temperature controller preset value, operation result, by PID arithmetic, is converted into operation information and feeds back to frequency converter by temperature controller, frequency converter then controls the start and stop of blower fan and the rotating speed of blower fan according to the operation information received, and according to the height of cooling tower 4 leaving water temperature, control the start and stop of frequency converter, to realize the temperature of VFC cooling tower cooling water.
In the present embodiment, cooling tower 4 adopts frequency converter to run, and outdoor temperature is lower than can using electricity wisely 25kwh when 20 DEG C, and running power is 5kw; Outdoor temperature, can using electricity wisely 8-25kwh 20 ~ 35 DEG C time; Can using electricity wisely 3kwh when outdoor temperature is more than 35 DEG C, running power is about 27kw.
Claims (4)
1. the temperature control system of a cooling tower cooling water, this system comprises temperature sensor (3), temperature controller, frequency converter, water pump (2), cooling tower (4) and condenser (1), it is characterized in that, described temperature sensor (3) is arranged on the water inlet pipe between water pump (2) and condenser (1), described temperature controller is switched on temperature sensor (3) and frequency converter by external circuits respectively, and described frequency converter is connected by the blower fan in circuit and cooling tower (4).
2. the temperature control system of a kind of cooling tower cooling water according to claim 1, it is characterized in that, described temperature controller is provided with PID arithmetic program.
3. the temperature control system of a kind of cooling tower cooling water according to claim 1, is characterized in that, described temperature sensor (3) is PT100 temperature sensor preferably.
4. the temperature control system of a kind of cooling tower cooling water according to claim 1, it is characterized in that, during work, described temperature sensor (3) detects the temperature of condenser (1) water inlet pipe cooling water, temperature simulation amount signal is sent on temperature controller, and contrast with temperature controller preset value, operation result is fed back to frequency converter by temperature controller, and pass through start and stop and the rotating speed of blower fan in Frequency Converter Control cooling tower (4), to realize the temperature of VFC cooling tower (4) cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350528.1A CN104567529A (en) | 2014-07-22 | 2014-07-22 | Temperature control system of cooling water of cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350528.1A CN104567529A (en) | 2014-07-22 | 2014-07-22 | Temperature control system of cooling water of cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104567529A true CN104567529A (en) | 2015-04-29 |
Family
ID=53084163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410350528.1A Pending CN104567529A (en) | 2014-07-22 | 2014-07-22 | Temperature control system of cooling water of cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104567529A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017620A (en) * | 2016-07-30 | 2016-10-12 | 温州恒海科技有限公司 | Calibration device with intelligent piston volume pipe |
| CN107065543A (en) * | 2017-03-29 | 2017-08-18 | 山东华星石油化工集团有限公司 | A kind of optimal Water temperature control method of recirculating cooling water system |
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| JPS60126597A (en) * | 1983-12-14 | 1985-07-06 | Mitsubishi Plastics Ind Ltd | Controlling method of water temperature of cooling tower |
| JPH05340690A (en) * | 1992-06-05 | 1993-12-21 | Yazaki Corp | Cooling tower and cooling capacity control method |
| US6446941B1 (en) * | 2000-10-11 | 2002-09-10 | Kuwait Institute For Scientific Research | Cooling tower and method for optimizing use of water and electricity |
| CN1415915A (en) * | 2002-08-27 | 2003-05-07 | 贵州华城楼宇科技有限公司 | Self-adapting energy saving control device with variable flux for compression type central conditioner |
| CN1598428A (en) * | 2004-09-09 | 2005-03-23 | 贵州汇诚科技有限公司 | Method for self-adaptive optimizing controlling cold water system of central air conditioner and its apparatus |
| CN2771712Y (en) * | 2005-03-25 | 2006-04-12 | 上海伟虹科技发展有限公司 | Energy-saving control system for central air conditioner |
| CN201129823Y (en) * | 2007-11-21 | 2008-10-08 | 厦门立思科技有限公司 | Central air conditioner energy-saving control device based on artificial neural net technique |
| CN201569355U (en) * | 2008-11-25 | 2010-09-01 | 蔡志强 | Efficient and energy-saving industrial circulating water control system |
| CN202216363U (en) * | 2011-08-12 | 2012-05-09 | 东莞市中科机电安装工程有限公司 | Energy conservation control device of cooling water tower of central air conditioner |
| 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 |
| CN203163376U (en) * | 2013-04-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Automatic speed adjusting device of cooling tower fan in lithium bromide unit |
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2014
- 2014-07-22 CN CN201410350528.1A patent/CN104567529A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60126597A (en) * | 1983-12-14 | 1985-07-06 | Mitsubishi Plastics Ind Ltd | Controlling method of water temperature of cooling tower |
| JPH05340690A (en) * | 1992-06-05 | 1993-12-21 | Yazaki Corp | Cooling tower and cooling capacity control method |
| US6446941B1 (en) * | 2000-10-11 | 2002-09-10 | Kuwait Institute For Scientific Research | Cooling tower and method for optimizing use of water and electricity |
| CN1415915A (en) * | 2002-08-27 | 2003-05-07 | 贵州华城楼宇科技有限公司 | Self-adapting energy saving control device with variable flux for compression type central conditioner |
| CN1598428A (en) * | 2004-09-09 | 2005-03-23 | 贵州汇诚科技有限公司 | Method for self-adaptive optimizing controlling cold water system of central air conditioner and its apparatus |
| CN2771712Y (en) * | 2005-03-25 | 2006-04-12 | 上海伟虹科技发展有限公司 | Energy-saving control system for central air conditioner |
| CN201129823Y (en) * | 2007-11-21 | 2008-10-08 | 厦门立思科技有限公司 | Central air conditioner energy-saving control device based on artificial neural net technique |
| CN201569355U (en) * | 2008-11-25 | 2010-09-01 | 蔡志强 | Efficient and energy-saving industrial circulating water control system |
| CN202216363U (en) * | 2011-08-12 | 2012-05-09 | 东莞市中科机电安装工程有限公司 | Energy conservation control device of cooling water tower of central air conditioner |
| 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 |
| CN203163376U (en) * | 2013-04-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Automatic speed adjusting device of cooling tower fan in lithium bromide unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017620A (en) * | 2016-07-30 | 2016-10-12 | 温州恒海科技有限公司 | Calibration device with intelligent piston volume pipe |
| CN107065543A (en) * | 2017-03-29 | 2017-08-18 | 山东华星石油化工集团有限公司 | A kind of optimal Water temperature control method of recirculating cooling water system |
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Application publication date: 20150429 |