CN202254917U - Online monitoring and operating system for temperature field of direct air cooling system of generator set - Google Patents
Online monitoring and operating system for temperature field of direct air cooling system of generator set Download PDFInfo
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- CN202254917U CN202254917U CN2011203437869U CN201120343786U CN202254917U CN 202254917 U CN202254917 U CN 202254917U CN 2011203437869 U CN2011203437869 U CN 2011203437869U CN 201120343786 U CN201120343786 U CN 201120343786U CN 202254917 U CN202254917 U CN 202254917U
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Abstract
The utility model relates to an online monitoring and operating system for a temperature field of a direct air cooling system of a generator set. The online monitoring and operating system comprises a server and a wireless monitoring device which is connected with the server, wherein the wireless monitoring device comprises a wireless temperature monitor and a temperature detection device; the server is connected with the wireless temperature monitor; the server is used for setting the operation backpressure of a steam turbine and the cleaning frequency of a radiator of the air cooling system according to temperature information transmitted by the wireless temperature monitor, and adjusting the rotating speed of a cooling fan of the air cooling system; the wireless temperature monitor is used for receiving the temperature information of the air cooling system, which is measured by the temperature detection device, and sending the temperature information to the server; and the temperature detection device is arranged on the radiator of the air cooling system, and is used for measuring the surface temperature and the inlet/outlet air temperature of the radiator and transmitting measured data to the wireless temperature monitor. The online monitoring and operating system for the temperature field of the direct air cooling system of the generator set has the beneficial effects that the temperature field of the air cooling system is monitored in real time; the operation of the cooling fan of the air cooling system is controlled according to the measured temperature; and the reasonable cleaning frequency and the optimal operation backpressure of the steam turbine are set, thereby, the working efficiency of the air cooling system is improved.
Description
Technical field
The utility model relates to a kind of generating set direct air cooling system temperature field on-line monitoring and control system.
Background technology
Last century, late nineteen eighties China began to introduce air cooling technique, got into after 21 century, and National Development and Reform Committee is defined in the water-deficient area, northwest and does not allow to build the water-cooled thermal power plant of employing.Direct Air-Cooling Technology is widely used in industrial circles such as electric power and oil with its using water wisely, plurality of advantages such as floor space is few and flexible operation is convenient, has particularly played the part of important role when the thermal power plant is built in area, rich coal lack of water three Norths (North China, northwest, northeast) solving.The air cooling system that power plant steam turbine condensing equipment system adopts (being called for short the power plant air cooling system) is for solving in " rich coal lack of water " area or construction thermal power plant, arid area progressively grows up.Compare with traditional water cooling mode, air cooling system has s cold end system water saving 95% and full factory economizes on water 65% with first-class advantage.
Along with people's is to the pay attention to day by day of water resource and the enhancing gradually of environmental consciousness; Direct air cooling system is used more and more widely in rich coal water-deficient area; But should technology also run into following problem in power plant's running at home: unit day-to-day operation back pressure is higher, and is obvious with the theoretical value gap; The unit back pressure receives environmental factor (temperature, ambient wind velocity, wind direction) influence bigger; Unit summer high temperature period on-load limited ability; Antifreeze pressure is bigger the low temperature period during unit winter operation; Unit cooling blower station service power consumption rate is higher, and the air cooling system cooling blower method of operation is unreasonable; The unit vacuum system strictness is relatively poor; The air cooling system spreader surface is dirtier, and the cleaning frequency is unreasonable etc.
The utility model content
The utility model is for solving the problems of the technologies described above a kind of generating set direct air cooling system temperature field on-line monitoring and the control system of providing.Through operation to the real-time Monitoring and Controlling direct air cooling system in direct air cooling system temperature field.
The technical scheme that the utility model solves the problems of the technologies described above is following: a kind of generating set direct air cooling system temperature field on-line monitoring and control system; Comprise server and the wireless monitoring device that is connected with server; Said wireless monitoring device comprises wireless temperature monitoring appearance and temperature-detecting device
Said server is connected with said wireless temperature monitoring appearance, and server is set direct air cooling system operation back pressure and radiator cleaning frequency according to the temperature information of said wireless temperature monitoring appearance transmission, and adjustment direct air cooling system cooling blower rotating speed,
Said wireless temperature monitoring appearance receives the temperature information of the direct air cooling system of said temperature-detecting device measurement, and sends it to said server;
Said temperature-detecting device is arranged on the direct air cooling system radiator, is used to measure direct air cooling system spreader surface and radiator and imports and exports the temperature of air and send data measured to said wireless temperature monitoring appearance.
Further; Said temperature-detecting device comprises temperature sensor, measuring circuit, logic control circuit, wireless transceiver circuit and power supply circuits; Said temperature sensor, measuring circuit and logic control circuit are connected successively; Said logic control circuit is connected with power supply circuits, and said logic control circuit is connected with said wireless temperature monitoring appearance through wireless transceiver circuit.
Further, said server is connected with said wireless temperature monitoring appearance through the RS485 bus.
Further, said server also is used for carrying out antifreeze early warning or hot reflux early warning according to the temperature information that said wireless temperature monitoring appearance transmits.
The beneficial effect of the utility model is: monitor direct air cooling system temperature field temperature in real time; And the operation of direct air cooling system cooling blower is controlled according to the temperature of measuring; Set rational cleaning frequency and optimum operation back pressure, in time carry out summer fever backflow early warning, preventing freeze in winter early warning.
Description of drawings
Fig. 1 is the utility model structured flowchart;
Fig. 2 is the utility model temperature-detecting device structured flowchart.
The specific embodiment
Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.
As shown in Figure 1, a kind of generating set direct air cooling system temperature field on-line monitoring and control system comprise server and the wireless monitoring device that is connected with server, and said wireless monitoring device comprises wireless temperature monitoring appearance and temperature-detecting device,
Said temperature-detecting device is arranged on the direct air cooling system radiator, is used to measure the temperature of direct air cooling system and sends data measured to said wireless temperature monitoring appearance.
Said temperature-detecting device comprises temperature sensor, measuring circuit, logic control circuit, 2.4G wireless transceiver circuit and power supply circuits; Said temperature sensor, measuring circuit and logic control circuit are connected successively; Said logic control circuit is connected with power supply circuits, and said logic control circuit is connected with said wireless temperature monitoring appearance through the 2.4G wireless transceiver circuit.Temperature sensor sends to the wireless type temperature monitor with temperature signal through the 2.4G wireless network.
Said wireless temperature monitoring appearance receives the temperature information of the direct air cooling system of said temperature-detecting device measurement, and sends it to said server.
Said server is monitoring center's computer; Be connected with said wireless temperature monitoring appearance through the RS485 bus; Server is set steam turbine operation back pressure and direct air cooling system radiator cleaning frequency according to the temperature information (temperature information comprises the temperature of spreader surface, radiator import and export air) of said wireless temperature monitoring appearance transmission, and adjustment direct air cooling system cooling blower rotating speed;
The said air cooling system spreader surface temperature data that receives when said server then reduces the steam turbine operation back pressure above predetermined value, is not higher than predetermined value until air cooling system spreader surface temperature along with said steam turbine operation back pressure is reduced to and then stablizes the steam turbine operation back pressure.
For example: when the supposition turbine back pressure was 20kPa, monitoring air cooling system spreader surface temperature was 10 ℃.At this moment can reduce back pressure according to the temperature data (higher) that monitors.Reduce in the back pressure process, air cooling system spreader surface temperature is affected and descends simultaneously.Monitor spreader surface temperature temperature in the reduction back pressure process and drop to, can adjust and stable back pressure near 0 ℃.This moment, back pressure was lower than 20kPa.Guarantee in the winter time under the uncongealable prerequisite of unit radiator that back pressure can be than the low 0.5-1kPa of the common method of operation.Obtain economy.
Said server is imported and exported difference in air temperature according to the air cooling system radiator and is judged radiator dust stratification thickness, imports and exports difference in air temperature when the air cooling system radiator and surpasses setting value, and then the dust stratification to radiator cleans.
For example: good during 32 ℃ of air cooling system radiator outlet air themperatures that monitors when 20 ℃ of radiator inlet air temperatures according to historical data analysis radiator heat exchange this moment, need not clean.Along with unit operation, dust stratification increases, and air cooling system radiator outlet air themperature increases, and cleans when reaching 37 ℃.Avoid unwanted cleaning, strengthen necessary the cleaning, finally reduce overall dust stratification degree.
The said air cooling system spreader surface temperature data that receives when said server is lower than predetermined value; Then reduce air cooling system cooling blower rotating speed, the air cooling system spreader surface temperature data that receives until said server is along with air cooling system cooling blower rotating speed reduces to be increased to and be not less than predetermined value and then stablize air cooling system cooling blower rotating speed.
Cooling blower adds up to 56,40 of following current district cooling blowers, 16 of countercurrent zone cooling blowers; Running frequency (rotating speed) is 50Hz, during 0 ℃ of countercurrent zone temperature monitoring point this moment (be radiator outlet air themperature be 0 spend), can reduce countercurrent zone cooling blower running frequency (rotating speed); In the reduction process; The radiator outlet air themperature can be affected and raise, and when rising to 6 ℃, stablizes adverse current cooling blower running frequency (rotating speed).This moment, back pressure did not have significant change before with adjustment cooling blower running frequency (rotating speed).Stablize under the prerequisite of back pressure, reduced the cooling blower power consumption.
Said server also is used for carrying out antifreeze early warning or hot reflux early warning according to the temperature information that said wireless temperature monitoring appearance transmits.
Said antifreeze early warning is specially when the spreader surface temperature is lower than zero degree reports to the police, and the hot reflux early warning is specially when the short time appears in radiator intake air temperature when measuring summer significantly rises then and to report to the police.
The data such as setting value that the predetermined value of above-mentioned said spreader surface temperature data, air cooling system radiator are imported and exported difference in air temperature all are arranged in the memory of server, and the data such as setting value of the predetermined value of stating the radiator temperature data of the storage in the temperature information of the said wireless temperature monitoring appearance transmission that receives of server and the memory, air cooling system radiator import and export difference in air temperature compare through the comparator in the server and realize.
Becoming one of temperature-detecting device structure in the present embodiment, volume is little, easy to be installed, and specification is following: temperature measurement range :-55～+ 125.Precision: ± 0.5 ℃ (20～+ 80 ℃).Resolution ratio: 0.0625 ℃.Temperature survey cycle: 1s ~ 90s can adjust.Outdoor type transmission range: less than 300 meters.Power supply: AA 3.6V lithium battery, working time＞3 year.Radio frequency standard: IEEE802.15.4.Appearance and size: standard 56mm * 27mm * 18mm there are differences according to battery capacity.
Server is through the RS485 industrial bus; Connect the wireless temperature monitoring appearance, every wireless temperature monitoring appearance all has a RS485 interface, under the situation of non-relay device; Nearly 128 wireless temperature monitoring appearance wireless type temperature monitors can be formed a wireless telemetering network; Every wireless type temperature monitor is equivalent to a WAP, and it can insert 6-18 temperature-detecting device, the temperature that all wireless type temperature monitors of server on-line monitoring are measured.
Different according to ambient conditions, the monitoring distance between wireless temperature monitoring appearance and the wireless temperature checkout gear is a 10-100 rice.
The specification of wireless temperature monitoring appearance is following: radio frequency standard: IEEE802.15.4.But management of sensor number: 32 or 64.Can show the sensor number: 18.Temperature shows: LCD display, be with backlight.Report to the police and export: 1 (no source contact).Network interface: isolate RS-485 industrial bus interface.Operating voltage: 220VAC/220VDC.Operating temperature :-10 ℃～+ 80 ℃.Storing temperature :-40 ℃～+ 85 ℃.Mounting means: embedded dish dress.
Adopt radio wave to carry out the signal transmission, temperature sensor is installed on the direct air cooling system radiator, and does not have electrical link between the receiving equipment, so this system has fundamentally solved the difficult problem that the direct air cooling system temperature is difficult for the large tracts of land real time on-line monitoring.Temperature field on-line monitoring and control system have high reliability and security, according to unit optimum operation back pressure, under prerequisites such as air cooling system effectively prevents to freeze, improve the unit operation economy.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. generating set direct air cooling system temperature field on-line monitoring and control system, it is characterized in that: comprise server and the wireless monitoring device that is connected with server, said wireless monitoring device comprises wireless temperature monitoring appearance and temperature-detecting device,
Said temperature-detecting device is arranged on the direct air cooling system radiator, is used to measure direct air cooling system spreader surface and radiator and imports and exports the temperature of air and send data measured to said wireless temperature monitoring appearance;
Said wireless temperature monitoring appearance, the direct air cooling system spreader surface temperature information and the radiator that receive said temperature-detecting device measurement are imported and exported the temperature information of air, and send it to said server;
Said server is connected with said wireless temperature monitoring appearance, and server is set steam turbine operation back pressure and air cooling system radiator cleaning frequency according to the temperature information of said wireless temperature monitoring appearance transmission, and adjustment direct air cooling system cooling blower rotating speed.
2. a kind of generating set direct air cooling system temperature field on-line monitoring according to claim 1 and control system; It is characterized in that: said temperature-detecting device comprises temperature sensor, measuring circuit, logic control circuit, wireless transceiver circuit and power supply circuits; Said temperature sensor, measuring circuit and logic control circuit are connected successively; Said logic control circuit is connected with power supply circuits, and said logic control circuit is connected with said wireless temperature monitoring appearance through wireless transceiver circuit.
3. a kind of generating set direct air cooling system temperature field on-line monitoring according to claim 1 and control system is characterized in that: said server is connected with said wireless temperature monitoring appearance through the RS485 bus.
4. a kind of generating set direct air cooling system temperature field on-line monitoring according to claim 1 and control system is characterized in that: said server also is used for carrying out antifreeze early warning or hot reflux early warning according to the temperature information that said wireless temperature monitoring appearance transmits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203437869U CN202254917U (en) | 2011-09-14 | 2011-09-14 | Online monitoring and operating system for temperature field of direct air cooling system of generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203437869U CN202254917U (en) | 2011-09-14 | 2011-09-14 | Online monitoring and operating system for temperature field of direct air cooling system of generator set |
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| Publication Number | Publication Date |
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| CN202254917U true CN202254917U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203437869U Expired - Fee Related CN202254917U (en) | 2011-09-14 | 2011-09-14 | Online monitoring and operating system for temperature field of direct air cooling system of generator set |
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| CN (1) | CN202254917U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940257A (en) * | 2014-03-21 | 2014-07-23 | 中科诺维(北京)科技有限公司 | Temperature control system of air cooling condenser |
| CN106556260A (en) * | 2015-09-28 | 2017-04-05 | 新特能源股份有限公司 | A kind of Air-Cooling Island inlet valve antifreeze control system |
| CN106766986A (en) * | 2017-01-16 | 2017-05-31 | 陕西德源府谷能源有限公司 | The temperature monitoring system and temperature monitoring method of air cooling tubes condenser |
| CN111957637A (en) * | 2020-07-16 | 2020-11-20 | 中国神华能源股份有限公司国华电力分公司 | Flushing method, flushing device and flushing system |
-
2011
- 2011-09-14 CN CN2011203437869U patent/CN202254917U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940257A (en) * | 2014-03-21 | 2014-07-23 | 中科诺维(北京)科技有限公司 | Temperature control system of air cooling condenser |
| CN103940257B (en) * | 2014-03-21 | 2015-12-30 | 中科诺维(北京)科技有限公司 | Air-cooling island temperature control system |
| CN106556260A (en) * | 2015-09-28 | 2017-04-05 | 新特能源股份有限公司 | A kind of Air-Cooling Island inlet valve antifreeze control system |
| CN106556260B (en) * | 2015-09-28 | 2019-02-15 | 新特能源股份有限公司 | A kind of Air-Cooling Island inlet valve antifreeze control system |
| CN106766986A (en) * | 2017-01-16 | 2017-05-31 | 陕西德源府谷能源有限公司 | The temperature monitoring system and temperature monitoring method of air cooling tubes condenser |
| CN111957637A (en) * | 2020-07-16 | 2020-11-20 | 中国神华能源股份有限公司国华电力分公司 | Flushing method, flushing device and flushing system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20200914 |
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| CF01 | Termination of patent right due to non-payment of annual fee |