CN103940257A - Temperature control system of air cooling condenser - Google Patents
Temperature control system of air cooling condenser Download PDFInfo
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- CN103940257A CN103940257A CN201410108563.2A CN201410108563A CN103940257A CN 103940257 A CN103940257 A CN 103940257A CN 201410108563 A CN201410108563 A CN 201410108563A CN 103940257 A CN103940257 A CN 103940257A
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Abstract
The invention provides a temperature control system of an air cooling condenser. The temperature control system comprises temperature detection equipment, signal transmission equipment, an optimizing control device and an on-site control device. The temperature detection equipment is arranged on the air cooling condenser and used for detecting the temperature of the air cooling condenser. The signal transmission equipment is respectively connected with the temperature detection equipment and the optimizing control device and used for transmitting the temperature of the air cooling condenser to the optimizing control device. The optimizing control device is connected with the on-site control device through interface equipment and used for calculating the temperature of the air cooling condenser to obtain a pressure set value and cooling fan rotation speed. The pressure set value and the cooling fan rotation speed are transmitted to the on-site control device so that the on-site control device can adjust steam pressure of the air cooling condenser and the rotation speed of a cooling fan. According to the temperature control system of the air cooling condenser, the problem that the condenser of an existing air cooling set is prone to being frozen locally is solved so that normal operation of the condenser can be kept.
Description
Technical field
The present invention relates to air-cooled technology, relate in particular to a kind of Air-Cooling Island temperature control system.
Background technology
Air-cooled technology is with advantages such as its environmental protection, energy-conservation, water savings, be widely used in the industrial circle such as electric power, oil, especially lack in the thermal power plant of setting up in area in water resource, adopt air-cooled technology steam turbine condensing equipment to adopt exactly air-cooled technology to carry out generating set steam turbine condensing equipment cooling, alleviated greatly the problem that water resource lacks.
Steam turbine condensing equipment claims again Air-Cooling Island, is to adopt cooling blower to force cooling air mode to generating set.The steam flow of condensing equipment has determined the rotating speed size of cooling blower, and in the time that environment temperature is higher, the steam flow of condensing equipment is larger, the rotating speed of cooling blower needs very fast, and in the time that environment temperature is lower, the steam flow of condensing equipment is less, the rotating speed of cooling blower is corresponding reducing also.Because cooling blower is to be directly exposed in outdoor environment, at cooling blower rotating speed hour,, easily there is the phenomenon of partial freezing in the non-uniform temperature in condenser pipe, has affected the normal operation of condensing equipment, and then caused generating efficiency lower.
Summary of the invention
The invention provides a kind of Air-Cooling Island temperature control system, the phenomenon of partial freezing easily occurs for solving existing condensing equipment, to maintain the normal operation of condensing equipment.
The invention provides a kind of Air-Cooling Island temperature control system, comprise temperature testing equipment, signal transmission apparatus, optimized control device and on-site control device;
Described temperature testing equipment is arranged on Air-Cooling Island, for detection of Air-Cooling Island temperature;
Described signal transmission apparatus is connected with described temperature testing equipment and optimized control device respectively, for described Air-Cooling Island temperature is transferred to described optimized control device;
Described optimized control device is connected by interface equipment with described on-site control device, for calculating pressure set points and cooling blower rotating speed according to described Air-Cooling Island temperature, and described pressure set points and cooling blower rotating speed are sent to described on-site control device, so that described on-site control device regulates the steam pressure of described Air-Cooling Island and the rotating speed of cooling blower.
Air-Cooling Island temperature control system as above, described optimized control device comprises: Optimized Service device and real-time controller;
Described Optimized Service device is connected with described signal transmission apparatus, for described Air-Cooling Island temperature is calculated to pressure set points and cooling blower rotating speed; Described Optimized Service device is also connected with described real-time controller, for described pressure set points and cooling blower rotating speed are sent to described real-time controller;
Described real-time controller is connected with described on-site control device by described interface equipment, for described pressure set points and cooling blower rotating speed are sent to described on-site control device.
Air-Cooling Island temperature control system as above, described signal transmission apparatus comprises: wireless signal transmitter and wireless signal receiver;
Described wireless signal transmitter is connected with described temperature testing equipment, for being that wireless signal sends by described Air-Cooling Island temperature transition;
Described wireless signal receiver is for receiving described Air-Cooling Island temperature by wireless network, and described wireless signal receiver is also connected with described Optimized Service device, for described Air-Cooling Island temperature is sent to described Optimized Service device.
Air-Cooling Island temperature control system as above, described on-site control device comprises: engineer station and field control station;
Described field control station is connected with described real-time controller by described interface equipment, and described field control station is also connected with described engineer station, for receiving described pressure set points and cooling blower rotating speed, and sends to described engineer station; Described engineer station is used for calculating respectively pressure regulated quantity and wind speed regulated quantity according to described pressure set points and cooling blower rotating speed, and by the steam pressure of steam turbine and the rotating speed of cooling blower in field control station control Air-Cooling Island.
Air-Cooling Island temperature control system as above, described optimized control device also comprises the webserver;
The described webserver is connected with described Optimized Service device.
Air-Cooling Island temperature control system as above, described on-site control device also comprises: redundancy engineer station and redundancy field control station.
Air-Cooling Island temperature control system as above, described engineer station is also connected by opc server with described Optimized Service device.
Air-Cooling Island temperature control system as above, described optimized control device also comprises: display and operation equipment;
Described display and operation equipment is connected with described Optimized Service device, for receiving the control parameter of user's input and sending to described optimal controller, and the operational factor of Optimized Service device is shown.
Air-Cooling Island temperature control system as above, described optimized control device also comprises: redundancy real-time controller.
The technical scheme of the embodiment of the present invention is by adopting temperature testing equipment to detect Air-Cooling Island temperature, and adopt optimized control device to calculate pressure set points and cooling blower rotating speed according to Air-Cooling Island temperature, by on-site control device, the steam pressure to Air-Cooling Island and cooling blower rotating speed regulate again, can solve the phenomenon that partial freezing easily occurs existing condensing equipment in the situation that temperature is lower, realize under different temperatures Air-Cooling Island has been controlled flexibly, to maintain the normal operation of condensing equipment, can reduce human cost simultaneously, shorten fault handling time, reduce the number of times of on-site maintenance, maintenance cost saving.In the situation that avoiding condensing equipment not freeze, can also further reduce steam pressure, make steam pressure and cooling blower rotating speed remain on equilibrium state, and reduce power consumption.
Brief description of the drawings
The structural representation one of the Air-Cooling Island temperature control system that Fig. 1 provides for the embodiment of the present invention;
The structural representation two of the Air-Cooling Island temperature control system that Fig. 2 provides for the embodiment of the present invention;
The front view of the installation rack schematic diagram of optimized control device in the Air-Cooling Island temperature control system that Fig. 3 provides for the embodiment of the present invention;
The rearview of the installation rack schematic diagram of optimized control device in the Air-Cooling Island temperature control system that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
The structural representation one of the Air-Cooling Island temperature control system that Fig. 1 provides for the embodiment of the present invention, the structural representation two of the Air-Cooling Island temperature control system that Fig. 2 provides for the embodiment of the present invention.
As depicted in figs. 1 and 2, the Air-Cooling Island temperature control system that the present embodiment provides can comprise temperature testing equipment 1, signal transmission apparatus 2, optimized control device 3 and on-site control device 4.
Wherein, temperature testing equipment 1 is arranged on Air-Cooling Island, for detection of Air-Cooling Island temperature.Temperature testing equipment 1 is specifically as follows temperature sensor, can be arranged on the radiator of Air-Cooling Island, measures the surface temperature of radiator.
Signal transmission apparatus 2 is connected with described temperature testing equipment 1 and optimized control device 3 respectively, for Air-Cooling Island temperature is transferred to optimized control device 3.Signal transmission apparatus 2 can or be radio transmission apparatus for wire transmission equipment, for the Air-Cooling Island in power plant, can adopt radio transmission apparatus, the electrical signal of Air-Cooling Island temperature is converted to wireless signal and transmits.Concrete, signal transmission apparatus 2 can comprise wireless signal transmitter 21 and wireless signal receiver 22, wireless signal transmitter 21 is connected with temperature testing equipment 1, for being converted to wireless signal, the signal of telecommunication of Air-Cooling Island temperature sends, and wireless signal receiver 22 is connected with optimal control equipment 3, receive Air-Cooling Island temperature by wireless network, and send to optimal control equipment 3.
Optimized control device 3 is connected by interface equipment 5 with on-site control device 4, for calculating pressure set points and cooling blower rotating speed according to Air-Cooling Island temperature, and pressure set points and cooling blower rotating speed are sent to on-site control device 4, so that on-site control device 4 regulates the steam pressure of Air-Cooling Island and the rotating speed of cooling blower.
In view of easily there is at a lower temperature the phenomenon that part is freezed in condensing equipment of the prior art, the present embodiment has proposed a kind of novel Air-Cooling Island temperature control system, the control of the steam pressure of the Air-Cooling Island temperature that employing optimized control device 3 detects according to temperature testing equipment 1 to condensing equipment is optimized, to avoid the situation that the part causing because steam pressure is too low is at a lower temperature freezed to occur.
Concrete, optimized control device 3 can comprise Optimized Service device 31 and real-time controller 32.Wherein, Optimized Service device 31 is connected with signal transmission apparatus 2, for Air-Cooling Island temperature being calculated to pressure set points and cooling blower rotating speed.Optimized Service device 31 is also connected with real-time controller 32, for pressure set points and cooling blower rotating speed are sent to real-time controller 32.Real-time controller 32 is connected with on-site control device 4 by interface equipment 5, for pressure set points and cooling blower rotating speed are sent to on-site control device 4.
Optimized Service device 31 specifically can be connected with wireless signal receiver 22, to receive Air-Cooling Island temperature signal.Optimized Service device 31 can calculate according to Air-Cooling Island temperature, calculates under current environmental temperature, and the optimum value of condensing equipment steam pressure, sends to on-site control device 4 by signal transmission apparatus 2, as the setting value of Steam pressure control process.
Can be in real-time controller 32 set temperature warning function, real-time controller 32 can compare the Air-Cooling Island temperature detecting in real time and the design temperature upper limit or lower limit, when the Air-Cooling Island temperature detecting is in real time greater than higher limit or during lower than lower limit, real-time controller 22 sends alarm signal, this alarm signal can send to on-site control device 4 by signal transmission apparatus 2, to send alarm signal at Air-Cooling Island scene.
In addition, optimized control device 3 can also comprise display and operation equipment 33, this display and operation equipment 33 is connected with Optimized Service device 31, for receiving the control parameter of user's input and sending to optimal controller 31, and the operational factor of Optimized Service device 31 is shown.Display and operation equipment 33 can comprise keyboard and display, for passing through keyboard input control parameter, for example input Current Temperatures, generating set power output etc. and control parameter, so that Optimized Service device is optimized calculating according to the control parameter of user's input, obtain the optimum value of steam pressure according to the Steam pressure control algorithm of setting, and obtain the spin rate control quantity of cooling blower according to Steam pressure control algorithm, send to on-site control device 4 by interface equipment 5.
For the concrete function of above-mentioned Optimized Service device 31, can build hardware circuit by those skilled in the art realizes, or the mode by software realizes, for example: the environment temperature based on Air-Cooling Island place is set up the Steam pressure control model of generating set under different generated outputs, and by power consumption and the power output numerical value of measuring generating set, the parameters in this Steam pressure control module is revised, then determine the optimal working point existing between the steam pressure of generating set and power that cooling blower consumes, obtain the optimum value of above-mentioned steam pressure.Then regulated the rotating speed of each cooling blower by on-site control device 4 according to the parameter such as environment temperature, generated output, to improve the temperature in condenser pipe, avoid producing local icing phenomenon.
The present embodiment provides a kind of software control algorithm framework of Optimized Service device 31, specifically can comprise data check module, DBM, temperature analysis module, cooling blower rotational speed control module and optimum pressure computing module.Wherein, data check module is carried out verification for the Air-Cooling Island temperature signal that temperature testing equipment 1 is sent, and removes the numerical value that deviation is larger, then temperature data is deposited in DBM.Temperature analysis module reading temperature data from DBM, carries out data analysis, and deposits analysis result in DBM.Optimum pressure computing module reads analysis result and calculates from DBM, obtain best steam pressure value and export to cooling blower rotational speed control module, so that cooling blower rotational speed control module calculates according to the best steam pressure value receiving, obtain the spin rate control quantity of cooling blower, export to interface equipment 5, send to again on-site control device 4, regulate with the steam pressure to Air-Cooling Island.Those skilled in the art can adopt the programming mode of knowing to write corresponding software program and realize, and the present embodiment is not construed as limiting this.
Optimized control device 3 can be arranged on separately in a rack, as shown in Figure 3, the front view of the installation rack schematic diagram of optimized control device in the Air-Cooling Island temperature control system that Fig. 3 provides for the embodiment of the present invention, the rearview of the installation rack schematic diagram of optimized control device in the Air-Cooling Island temperature control system that Fig. 4 provides for the embodiment of the present invention.
For above-mentioned on-site control device 4, specifically can comprise engineer station 41 and field control station 42, wherein, field control station 42 is connected with real-time controller 32 by interface equipment 5, field control station 42 is also connected with engineer station 41, be used for receiving pressure set points and cooling blower rotating speed, and send to engineer station 41.Engineer station 41 is for calculating respectively pressure regulated quantity and wind speed regulated quantity according to pressure set points and cooling blower rotating speed, and controls the steam pressure of steam turbine and the rotating speed of cooling blower in Air-Cooling Island by field control station 42.
Above-mentioned interface equipment 5 can be I/O interface, is separately positioned in optimized control device 3 and on-site control device 4, and then corresponding I/O interface connects, and carries out transfer of data to realize between optimized control device 3 and on-site control device 4.
Above-mentioned on-site control device 4 can adopt dcs conventional in the prior art framework of (Distributed Control System is called for short DCS), the ruuning situation of engineer station's 41 monitoring site control stations 42, and adjust in real time its operational factor.
Engineer station 41 can also be connected by opc server with Optimized Service device 31, to carry out the real-time, interactive of operational factor, adjusts the optimum value of steam pressure for Optimized Service device 31.
The technical scheme of the present embodiment is by adopting temperature testing equipment to detect Air-Cooling Island temperature, and adopt that optimized control device asks according to Air-Cooling Island calculate pressure set points and cooling blower rotating speed, by on-site control device, the steam pressure to Air-Cooling Island and cooling blower rotating speed regulate again, can solve the phenomenon that partial freezing easily occurs existing condensing equipment in the situation that temperature is lower, realize under different temperatures Air-Cooling Island has been controlled flexibly, to maintain the normal operation of condensing equipment, can reduce human cost simultaneously, shorten fault handling time, reduce the number of times of on-site maintenance, maintenance cost saving.In the situation that avoiding condensing equipment not freeze, can also further reduce steam pressure, make steam pressure and cooling blower rotating speed remain on equilibrium state, and reduce power consumption.
On the basis of technique scheme, optimized control device 3 can also comprise the webserver 34, and this webserver 34 is connected with Optimized Service device 31, Optimized Service device 31 is carried out to data transmission by network and remote supervisory and control(ling) equipment, to realize remote monitoring.
In addition, in order to improve the reliability of optimized control device 3, redundancy real-time controller can be set therein, its structure and annexation are identical with above-mentioned real-time controller 32, in real-time controller 32 course of normal operation, redundancy real-time controller is only monitored the running status of real-time controller 32, in the time monitoring real-time controller 32 and send without any action or signal in setting-up time, confirm that real-time controller 32 breaks down, redundancy real-time controller starts operation, replaces real-time controller 32 to carry out corresponding operation.
In like manner, redundancy engineer station and redundancy field control station are set in control device 4 at the scene, its structure and annexation are identical with field control station 42 with above-mentioned engineer station 41 respectively, and in the time that engineer station 41 and field control station 42 break down, replace and carry out corresponding operation.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (9)
1. an Air-Cooling Island temperature control system, is characterized in that, comprises temperature testing equipment, signal transmission apparatus, optimized control device and on-site control device;
Described temperature testing equipment is arranged on Air-Cooling Island, for detection of Air-Cooling Island temperature;
Described signal transmission apparatus is connected with described temperature testing equipment and optimized control device respectively, for described Air-Cooling Island temperature is transferred to described optimized control device;
Described optimized control device is connected by interface equipment with described on-site control device, for calculating pressure set points and cooling blower rotating speed according to described Air-Cooling Island temperature, and described pressure set points and cooling blower rotating speed are sent to described on-site control device, so that described on-site control device regulates the steam pressure of described Air-Cooling Island and the rotating speed of cooling blower.
2. Air-Cooling Island temperature control system according to claim 1, is characterized in that, described optimized control device comprises: Optimized Service device and real-time controller;
Described Optimized Service device is connected with described signal transmission apparatus, for described Air-Cooling Island temperature is calculated to pressure set points and cooling blower rotating speed; Described Optimized Service device is also connected with described real-time controller, for described pressure set points and cooling blower rotating speed are sent to described real-time controller;
Described real-time controller is connected with described on-site control device by described interface equipment, for described pressure set points and cooling blower rotating speed are sent to described on-site control device.
3. Air-Cooling Island temperature control system according to claim 2, is characterized in that, described signal transmission apparatus comprises: wireless signal transmitter and wireless signal receiver;
Described wireless signal transmitter is connected with described temperature testing equipment, for being that wireless signal sends by described Air-Cooling Island temperature transition;
Described wireless signal receiver is for receiving described Air-Cooling Island temperature by wireless network, and described wireless signal receiver is also connected with described Optimized Service device, for described Air-Cooling Island temperature is sent to described Optimized Service device.
4. Air-Cooling Island temperature control system according to claim 3, is characterized in that, described on-site control device comprises: engineer station and field control station;
Described field control station is connected with described real-time controller by described interface equipment, and described field control station is also connected with described engineer station, for receiving described pressure set points and cooling blower rotating speed, and sends to described engineer station; Described engineer station is used for calculating respectively pressure regulated quantity and wind speed regulated quantity according to described pressure set points and cooling blower rotating speed, and by the steam pressure of steam turbine and the rotating speed of cooling blower in field control station control Air-Cooling Island.
5. Air-Cooling Island temperature control system according to claim 4, is characterized in that, described optimized control device also comprises the webserver;
The described webserver is connected with described Optimized Service device.
6. according to the Air-Cooling Island temperature control system described in claim 1-5 any one, it is characterized in that, described on-site control device also comprises: redundancy engineer station and redundancy field control station.
7. Air-Cooling Island temperature control system according to claim 6, is characterized in that, described engineer station is also connected by opc server with described Optimized Service device.
8. Air-Cooling Island temperature control system according to claim 7, is characterized in that, described optimized control device also comprises: display and operation equipment;
Described display and operation equipment is connected with described Optimized Service device, for receiving the control parameter of user's input and sending to described optimal controller, and the operational factor of Optimized Service device is shown.
9. Air-Cooling Island temperature control system according to claim 7, is characterized in that, described optimized control device also comprises: redundancy real-time controller.
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| CN201410108563.2A CN103940257B (en) | 2014-03-21 | 2014-03-21 | Air-cooling island temperature control system |
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| CN201410108563.2A CN103940257B (en) | 2014-03-21 | 2014-03-21 | Air-cooling island temperature control system |
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| CN104609134A (en) * | 2015-02-04 | 2015-05-13 | 中交一航局安装工程有限公司 | Intelligent temperature measuring monitoring system for belt conveyor rollers |
| CN105157444A (en) * | 2015-03-30 | 2015-12-16 | 武汉理工大学 | Direct-type air cooling island axial flow fan intelligent control method and system |
| CN107277446A (en) * | 2017-06-30 | 2017-10-20 | 中科诺维(北京)科技有限公司 | Air-cooling island monitoring system |
| CN109472408A (en) * | 2018-11-02 | 2019-03-15 | 北京华亿宏图节能环保工程有限公司 | A kind of thermal power generation unit cold end management pad optimization regulating system |
| CN111947877A (en) * | 2020-07-23 | 2020-11-17 | 陕西清水川能源股份有限公司 | Intelligent dynamic control system for air cooling island of thermal power plant |
| CN112461014A (en) * | 2020-11-20 | 2021-03-09 | 中国能源建设集团华东电力试验研究院有限公司 | Air cooling island anti-freezing integrated system based on extreme cold climate condition and operation method thereof |
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| CN112461014A (en) * | 2020-11-20 | 2021-03-09 | 中国能源建设集团华东电力试验研究院有限公司 | Air cooling island anti-freezing integrated system based on extreme cold climate condition and operation method thereof |
| CN112461014B (en) * | 2020-11-20 | 2022-08-23 | 中国能源建设集团华东电力试验研究院有限公司 | Air cooling island anti-freezing integrated system based on extreme cold climate condition and operation method thereof |
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| CN103940257B (en) | 2015-12-30 |
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