CN1818602A - Cooling tower effect tester and testing method thereof - Google Patents
Cooling tower effect tester and testing method thereof Download PDFInfo
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- CN1818602A CN1818602A CN 200610049751 CN200610049751A CN1818602A CN 1818602 A CN1818602 A CN 1818602A CN 200610049751 CN200610049751 CN 200610049751 CN 200610049751 A CN200610049751 A CN 200610049751A CN 1818602 A CN1818602 A CN 1818602A
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Abstract
A device for testing efficiency of cooling tower consists PC computer, data bus, temperature collection module of dry-wet bulb, temperature collection module of water coming into tower and water going out tower, temperature collection module of heat source, flow rate collection module of water, speed collection module of wind, electricity collection module, control modules of heat source temperature and water flow rate as well as fan .The method for testing efficiency of cooling tower is also disclosed .
Description
Technical field
The present invention relates to a kind of cooling tower effect proving installation and method of testing.
Background technology
According to GB7190-1997, estimating cooling tower performance index has 2 points at present---cooling number (thermal performance) and blower fan power consumption ratio.Cooling number calculates and adopts Xin Puxun integral method (middle-size and small-size tower), Chebyshev's integral method (Large Towers), easy thermal performance method of testing (middle-size and small-size tower simple test method), is qualified greater than 0.9.In above-mentioned performance computation process, need to know dry-bulb temperature, wet-bulb temperature, atmospheric pressure, advance the tower water temperature, go out the tower water temperature, discharge, advance the tower air quantity.The blower fan power consumption is than being blower fan of cooling tower power consumption (kw) and flowing to the cooling tower water yield (m
3/ h) ratio is not more than 0.04 for qualified for Δ t=5 ℃ cooling tower, is not more than 0.06 for qualified for industrial tower.Since that blower fan power consumption ratio is not related with cooling number, do not have directly the usefulness of cooling tower to be estimated at present.
Summary of the invention
The purpose of this invention is to provide a kind of cooling tower effect method of testing and proving installation.
The cooling tower effect proving installation is joined with wet and dry bulb temperature acquisition module, inflow temperature acquisition module, leaving water temperature acquisition module, heat source temperature acquisition module, discharge acquisition module, wind speed acquisition module, electric quantity acquisition module, heat source temperature control module, flow-control module, blower fan control module respectively by data bus by PC.
Wet and dry bulb temperature acquisition module, inflow temperature acquisition module, leaving water temperature acquisition module, heat source temperature acquisition module circuit are joined with communication interface circuit, temperature transmission circuit, temperature sensor respectively by controller; The discharge acquisition module by controller form with the communication interface circuit respectively, flow signal treatment circuit, flowmeter join; The wind speed acquisition module is joined with communication interface circuit, wind velocity signal treatment circuit, wind speed transmitter respectively by controller; Electric quantity acquisition module is joined with communication interface circuit, electric quantity signal treatment circuit, electric parameter tester respectively by controller; The thermal source control module is joined with communication interface circuit, heating control circuit and well heater respectively by controller; Flow-control module, blower fan control module are joined with communication interface circuit, signal conversion circuit and control execution unit respectively by controller.
The cooling tower effect method of testing is PC continuous acquisition environment and running parameter, by to heat source temperature, advance tower discharge and blower fan frequency controllable parameter is controlled, extrapolate cooling tower best efficiency and other performance parameter automatically.
Advantage of the present invention is: continuous acquisition cooling tower operational factor; Not only for the cooling tower conformity testing provides method easily, and can solve the problem that exists by regulating controllable parameter for the best efficiency that cooling tower producer provides cooling tower; Provide foundation for improving the cooling tower performance.
Description of drawings
Fig. 1 is a cooling tower effect proving installation block scheme;
Fig. 2 is wet and dry bulb temperature acquisition module of the present invention, inflow temperature acquisition module, leaving water temperature acquisition module block scheme;
Fig. 3 is a discharge acquisition module block scheme of the present invention;
Fig. 4 is a wind speed acquisition module block scheme of the present invention;
Fig. 5 is an electric quantity acquisition module block scheme of the present invention;
Fig. 6 is a heat source temperature control module block scheme of the present invention;
Fig. 7 is blower fan control module of the present invention, discharge control module block scheme.
Embodiment
As shown in Figure 1, among the present invention, data bus 12 adopts the RS485 bus, the cooling tower effect proving installation is joined by RS485 bus and wet and dry bulb temperature acquisition module 2, inflow temperature acquisition module 3, leaving water temperature acquisition module 4, heat source temperature acquisition module 5, discharge acquisition module 6, wind speed acquisition module 7, electric quantity acquisition module 8, heat source temperature control module 9, flow-control module 10, blower fan control module 11 by PC 1, by the communication of Modbus agreement and each module.
As shown in Figure 2, wet and dry bulb temperature acquisition module 2, inflow temperature acquisition module 3, leaving water temperature acquisition module 4, heat source temperature acquisition module 5 circuit are made up of controller, temperature transmission circuit, temperature sensor, and CPU controls temperature sensor, temperature transmission circuit duty according to the different sensors type by control line.Select for use PT100 as temperature sensor in this example, the temperature transmission circuit is converted into 4～20mA signal with the resistance signal of sensor, send controller after AD transforms, controller requires to encapsulate with digital signal linearityization that receive and according to the Modbus communications protocol and then is converted into the level logic signal that meets the RS485 communication by the communication interface circuit and send PC 1.
As shown in Figure 3, discharge acquisition module 6 circuit are joined by controller and communication interface circuit, flow signal treatment circuit, flowmeter.Adopt the YYD electromagnetic flowmeter in this example, 0.5 grade of precision, the flowmeter output signal is 4～20mA current signal, after the filtering of flow signal treatment circuit, AD conversion, send controller, require encapsulation according to the Modbus communications protocol after the data linearization that controller receives, be converted into the level logic signal that meets the RS485 communication by the communication interface circuit and send PC 1.
As shown in Figure 4, wind speed acquisition module 7 circuit are joined with communication interface circuit, wind velocity signal treatment circuit, wind speed transmitter respectively by controller.The wind speed transmitter adopts CTV100 wind speed transmitter in this example, measurement range 0～30m/s, precision ± 3%, output 4～20mA current signal; The wind velocity signal treatment circuit carries out sending controller after filtering, the AD conversion to the wind speed current signal of input; Controller requires encapsulation according to the Modbus communications protocol after receiving wind velocity signal, is converted into the level logic signal that meets the RS485 communication by the communication interface circuit and send PC 1.
As shown in Figure 5, electric quantity acquisition module 8 circuit are joined with communication interface circuit, electric quantity signal treatment circuit, electric parameter tester respectively by controller.Adopt the PF380B electric parameter tester among the present invention, measurement parameter has: voltage (＜500V), electric current (80/10/2A can be provided with), power, power factor, frequency, adopt RS232 output, the range ability of electric parameter tester, the mode of connection etc. are set by CPU.The electric quantity signal treatment circuit send controller by the level logic conversion after reading RS232 interface electrical quantity; Controller extracts valid data after receiving data, and requires encapsulation according to the Modbus communications protocol, is converted into the level logic signal that meets the RS485 communication by the communication interface circuit and send PC 1.
As shown in Figure 6, heat source temperature control module 9 circuit are joined with controller, heating control circuit and well heater successively by the communication interface circuit.The control signal that the communication interface circuit receives PC drives well heater execution heating process after the level logic conversion send controller, controller to extract control information by the heat source temperature control circuit.
As shown in Figure 7, flow-control module 10, blower fan control module 11 circuit are joined with controller, signal conversion circuit and control actuator successively by the communication interface circuit.Among the present invention, the control actuator adopts the VF-P7 frequency converter, uses RS232 and signaling conversion circuit communication.During control, PC 1 sends control of conversion device frequency signal, sends to controller by the communication interface circuit; Controller extracts control information after receiving data, be converted to RS232 level logic signal by signaling conversion circuit and export frequency converter to, by Frequency Converter Control inlet channel water pump and blower fan of cooling tower frequency to reach the purpose of Control Flow and air quantity.
Above-mentioned each module starts test procedure by PC 1 after the power-on and can finish the cooling tower effect test process as long as require to be installed on the relevant position according to GB7190-1997.
In the cooling tower effect test process, PC 1 passes through data bus 12 continuously from wet and dry bulb temperature acquisition module 2, inflow temperature acquisition module 3, leaving water temperature acquisition module 4, heat source temperature acquisition module 5, discharge acquisition module 6, wind speed acquisition module 7, electric quantity acquisition module 8, heat source temperature control module 9, flow-control module 10, blower fan control module 11 image data, by to heat source temperature, advance tower discharge and blower fan frequency controllable parameter is controlled, calculate cooling number and blower fan power consumption ratio automatically according to GB; According to the ratio of cooling number and blower fan power consumption ratio, extrapolate the cooling tower best efficiency.
After the end of test (EOT), PC 1 generates the testing journal sheet, and this form has comprised the hardware characteristics of cooling tower and the cooling tower operational factor in the test process, has reflected usefulness and other performance parameter of cooling tower cooling tower under the test operating mode.
The above only is an an example of the present invention, when not limiting practical range of the present invention in proper order.Every structural variation of doing according to claim of the present invention, the additions and deletions of module number only otherwise lose main idea of the present invention place, all should be considered as further enforcement of the present invention and are restricted.
Claims (8)
1. cooling tower effect proving installation, it is characterized in that: it is joined with wet and dry bulb temperature acquisition module (2), inflow temperature acquisition module (3), leaving water temperature acquisition module (4), heat source temperature acquisition module (5), flow collection module (6), wind speed acquisition module (7), electric quantity acquisition module (8), heat source temperature control module (9), flow-control module (10), blower fan control module (11) respectively by data bus (12) by PC (1).
2. a kind of cooling tower effect proving installation according to claim 1 is characterized in that: described wet and dry bulb temperature acquisition module (2), inflow temperature acquisition module (3), leaving water temperature acquisition module (4), heat source temperature acquisition module (5) circuit are joined with communication interface circuit, temperature transmission circuit, temperature sensor respectively by controller.
3, a kind of cooling tower effect proving installation according to claim 1 is characterized in that: described flow collection module (6) circuit is joined with communication interface circuit, flow signal treatment circuit, flowmeter respectively by controller.
4, a kind of cooling tower effect proving installation according to claim 1 is characterized in that: described wind speed acquisition module (7) circuit is joined with communication interface circuit, wind velocity signal treatment circuit, wind speed transmitter respectively by controller.
5, a kind of cooling tower effect proving installation according to claim 1 is characterized in that: described electric quantity acquisition module (8) circuit is joined with communication interface circuit, electric quantity signal treatment circuit, electric parameter tester respectively by controller.
6, a kind of cooling tower effect proving installation according to claim 1 is characterized in that: described thermal source control module (9) circuit is joined with controller, heating control circuit and well heater successively by the communication interface circuit.
7, a kind of cooling tower effect proving installation according to claim 1 is characterized in that: described flow-control module (10), blower fan control module (11) circuit are joined with controller, signal conversion circuit and control actuator successively by the communication interface circuit.
8. one kind is used the method for testing of cooling tower effect proving installation according to claim 1, it is characterized in that: PC (1) continuous acquisition environment and running parameter, by to heat source temperature, advance tower discharge and blower fan frequency controllable parameter is controlled, extrapolate cooling tower best efficiency and other performance parameter automatically.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610049751 CN1818602A (en) | 2006-03-08 | 2006-03-08 | Cooling tower effect tester and testing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610049751 CN1818602A (en) | 2006-03-08 | 2006-03-08 | Cooling tower effect tester and testing method thereof |
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| CN1818602A true CN1818602A (en) | 2006-08-16 |
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| CN 200610049751 Pending CN1818602A (en) | 2006-03-08 | 2006-03-08 | Cooling tower effect tester and testing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539177A (en) * | 2010-12-30 | 2012-07-04 | 上海金日冷却设备有限公司 | Method for testing property of cooling tower |
| CN102831276A (en) * | 2012-08-31 | 2012-12-19 | 中国能源建设集团广东省电力设计研究院 | Method for calculating influence of environmental wind on thermal performance of ultra-large type natural draft cooling tower |
| CN102867084A (en) * | 2012-08-31 | 2013-01-09 | 中国能源建设集团广东省电力设计研究院 | Technological design three-dimensional simulation calculation method for oversized reverse-flow natural ventilation cooling tower |
| CN103293013A (en) * | 2013-05-13 | 2013-09-11 | 华南理工大学 | Method and system for evaluating thermal performance of cooling tower |
| CN104006980A (en) * | 2014-05-21 | 2014-08-27 | 华南理工大学 | Testing device capable of analyzing cooling tower performance in real time in online mode |
| CN107702744A (en) * | 2017-09-13 | 2018-02-16 | 山东大学 | A kind of cooling tower Zhou Jinfeng point layout method and monitoring system |
| CN113670640A (en) * | 2021-08-09 | 2021-11-19 | 深圳市辰诺节能科技有限公司 | Method for testing installation parameters of cooling tower |
| CN113983651A (en) * | 2021-11-23 | 2022-01-28 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
-
2006
- 2006-03-08 CN CN 200610049751 patent/CN1818602A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539177A (en) * | 2010-12-30 | 2012-07-04 | 上海金日冷却设备有限公司 | Method for testing property of cooling tower |
| CN102539177B (en) * | 2010-12-30 | 2014-12-10 | 上海金日冷却设备有限公司 | Method for testing property of cooling tower |
| CN102831276A (en) * | 2012-08-31 | 2012-12-19 | 中国能源建设集团广东省电力设计研究院 | Method for calculating influence of environmental wind on thermal performance of ultra-large type natural draft cooling tower |
| CN102867084A (en) * | 2012-08-31 | 2013-01-09 | 中国能源建设集团广东省电力设计研究院 | Technological design three-dimensional simulation calculation method for oversized reverse-flow natural ventilation cooling tower |
| CN102831276B (en) * | 2012-08-31 | 2015-04-08 | 中国能源建设集团广东省电力设计研究院 | Method for calculating influence of environmental wind on thermal performance of ultra-large type natural draft cooling tower |
| CN103293013A (en) * | 2013-05-13 | 2013-09-11 | 华南理工大学 | Method and system for evaluating thermal performance of cooling tower |
| CN103293013B (en) * | 2013-05-13 | 2015-12-23 | 华南理工大学 | A kind of cooling tower thermal performance appraisal procedure and system |
| CN104006980A (en) * | 2014-05-21 | 2014-08-27 | 华南理工大学 | Testing device capable of analyzing cooling tower performance in real time in online mode |
| CN107702744A (en) * | 2017-09-13 | 2018-02-16 | 山东大学 | A kind of cooling tower Zhou Jinfeng point layout method and monitoring system |
| CN113670640A (en) * | 2021-08-09 | 2021-11-19 | 深圳市辰诺节能科技有限公司 | Method for testing installation parameters of cooling tower |
| CN113983651A (en) * | 2021-11-23 | 2022-01-28 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
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