CN103940257B - Air-cooling island temperature control system - Google Patents
Air-cooling island temperature control system Download PDFInfo
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- CN103940257B CN103940257B CN201410108563.2A CN201410108563A CN103940257B CN 103940257 B CN103940257 B CN 103940257B CN 201410108563 A CN201410108563 A CN 201410108563A CN 103940257 B CN103940257 B CN 103940257B
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Abstract
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; Temperature testing equipment is arranged on Air-Cooling Island, for detecting Air-Cooling Island temperature; Signal transmission apparatus is connected with temperature testing equipment and optimized control device respectively, for Air-Cooling Island temperature is transferred to optimized control device; Optimized control device is connected by interface equipment with on-site control device, pressure set points and cooling blower rotating speed is calculated for carrying out according to Air-Cooling Island temperature, and pressure set points and cooling blower rotating speed are sent to on-site control device, regulate the steam pressure of Air-Cooling Island and the rotating speed of cooling blower to make on-site control device.Easily there is the phenomenon of partial freezing in the condensing equipment that Air-Cooling Island temperature control system provided by the invention can solve existing Air-cooled Unit, to maintain the normal operation of condensing equipment.
Description
Technical field
The present invention relates to air-cooled technology, particularly relate 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 water resource in the thermal power plant set up in area, adopt air-cooled technology steam turbine condensing equipment to adopt air-cooled technology to cool generating set steam turbine condensing equipment exactly, alleviate the problem that water resource lacks greatly.
Steam turbine condensing equipment, also known as Air-Cooling Island, is adopt cooling blower to carry out pressure cooling air mode to generating set.The steam flow of condensing equipment determines the rotating speed size of cooling blower, and when environment temperature is higher, the steam flow of condensing equipment is larger, the rotating speed of cooling blower needs very fast, and when environment temperature is lower, the steam flow of condensing equipment is less, the rotating speed also corresponding reduction of cooling blower.Because cooling blower is directly exposed in outdoor environment, when cooling blower rotating speed is less, easily there is the phenomenon of partial freezing, have impact on the normal operation of condensing equipment, and then cause generating efficiency lower in the non-uniform temperature in condenser pipe.
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 detecting 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 carrying out 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, regulate the steam pressure of described Air-Cooling Island and the rotating speed of cooling blower to make described on-site control device.
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 calculating pressure set points and cooling blower rotating speed to described Air-Cooling Island temperature; 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, for described pressure set points and cooling blower rotating speed are sent to described on-site control device by described interface equipment.
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 used 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 pressure regulated quantity and wind speed regulated quantity respectively according to described 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.
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 controling parameters of user's input and sending to described optimal controller, and shows the operational factor of Optimized Service device.
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 detects Air-Cooling Island temperature by adopting temperature testing equipment, and adopt optimized control device to carry out calculating pressure set points and cooling blower rotating speed according to Air-Cooling Island temperature, by on-site control device, the steam pressure of Air-Cooling Island and cooling blower rotating speed are regulated again, the phenomenon that partial freezing easily occurs when temperature is lower existing condensing equipment can be solved, achieve and at different temperatures Air-Cooling Island is controlled flexibly, to maintain the normal operation of condensing equipment, human cost can be reduced simultaneously, shorten fault handling time, reduce the number of times of on-site maintenance, maintenance cost saving.When avoiding condensing equipment not freeze, steam pressure can also be reduced further, making steam pressure and cooling blower rotating speed remain on equilibrium state, and reduce power consumption.
Accompanying drawing explanation
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 two of the Air-Cooling Island temperature control system that the structural representation one, Fig. 2 of the Air-Cooling Island temperature control system that Fig. 1 provides for the embodiment of the present invention 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 detecting 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 or can 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 transmit.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, send for the signal of telecommunication of Air-Cooling Island temperature is converted to wireless signal, 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, pressure set points and cooling blower rotating speed is calculated for carrying out according to Air-Cooling Island temperature, and pressure set points and cooling blower rotating speed are sent to on-site control device 4, regulate the steam pressure of Air-Cooling Island and the rotating speed of cooling blower to make on-site control device 4.
In view of the condensing equipment of the prior art easy phenomenon freezed of generating portion at a lower temperature, the present embodiment proposes a kind of novel Air-Cooling Island temperature control system, the control of Air-Cooling Island temperature to the steam pressure of condensing equipment adopting optimized control device 3 to detect according to temperature testing equipment 1 is optimized, and to avoid too low due to steam pressure at a lower temperature, part that is that cause is freezed situation occurs.
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 calculating pressure set points and cooling blower rotating speed to Air-Cooling Island temperature.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, 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 in real-time controller 32 set temperature warning function, the Air-Cooling Island temperature detected in real time and the design temperature upper limit or lower limit can compare by real-time controller 32, when the Air-Cooling Island temperature detected in real time be greater than higher limit or lower than lower limit time, real-time controller 22 sends alarm signal, this alarm signal sends 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 controling parameters of user's input and sending to optimal controller 31, and shows the operational factor of Optimized Service device 31.Display and operation equipment 33 can comprise keyboard and display, for passing through input through keyboard controling parameters, such as input the controling parameters such as Current Temperatures, generating set power output, calculating is optimized with the controling parameters making Optimized Service device input according to user, the optimum value of steam pressure is obtained according to the Steam pressure control algorithm of setting, and the spin rate control quantity of cooling blower is obtained 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, hardware circuit can be built realize by those skilled in the art, or realized by the mode of software, such as: the environment temperature based on Air-Cooling Island place sets up the Steam pressure control model of generating set under different generated output, and by the power consumption and power output numerical value measuring generating set, the parameters in this Steam pressure control module is revised, then the optimal working point existed between the power that the steam pressure of generating set and cooling blower consume is determined, obtain the optimum value of above-mentioned steam pressure.Then by on-site control device 4 environmentally the parameter such as temperature, generated output regulate the rotating speed of each cooling blower, to improve the temperature in condenser pipe, avoid producing the phenomenon of localized ice build.
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 used for verifying the Air-Cooling Island temperature signal that temperature testing equipment 1 is sent, and removes the larger numerical value of deviation, then by temperature data stored in DBM.Temperature analysis module reading temperature data from DBM, carries out data analysis, and by analysis result stored in DBM.Optimum pressure computing module reads analysis result and calculates from DBM, obtain best vapour pressure force value and export to cooling blower rotational speed control module, calculate according to the best vapour pressure force value received to make cooling blower rotational speed control module, obtain the spin rate control quantity of cooling blower, export to interface equipment 5, send to on-site control device 4 again, to regulate the steam pressure of Air-Cooling Island.Those skilled in the art can adopt the programming mode known to write corresponding software program to 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, for receiving pressure set points and cooling blower rotating speed, and send to engineer station 41.Engineer station 41 for calculating pressure regulated quantity and wind speed regulated quantity respectively 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, to realize carrying out data transmission between optimized control device 3 and on-site control device 4.
Above-mentioned on-site control device 4 can adopt the framework of dcs (DistributedControlSystem is called for short DCS) conventional in prior art, the ruuning situation of engineer station 41 monitoring site control station 42, and adjusts its operational factor in real time.
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 detects Air-Cooling Island temperature by adopting temperature testing equipment, and adopt optimized control device to calculate pressure set points and cooling blower rotating speed according to the carrying out that Air-Cooling Island is asked, by on-site control device, the steam pressure of Air-Cooling Island and cooling blower rotating speed are regulated again, the phenomenon that partial freezing easily occurs when temperature is lower existing condensing equipment can be solved, achieve and at different temperatures Air-Cooling Island is controlled flexibly, to maintain the normal operation of condensing equipment, human cost can be reduced simultaneously, shorten fault handling time, reduce the number of times of on-site maintenance, maintenance cost saving.When avoiding condensing equipment not freeze, steam pressure can also be reduced further, making 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, and Optimized Service device 31 is carried out data transmission, to realize remote monitoring by network and remote supervisory and control(ling) equipment.
In addition, in order to improve the reliability of optimized control device 3, can redundancy real-time controller be set wherein, its structure is identical with above-mentioned real-time controller 32 with annexation, in real-time controller 32 course of normal operation, redundancy real-time controller is only monitored the running status of real-time controller 32, when monitoring real-time controller 32 and sending without any action or signal in setting-up time, then confirm that real-time controller 32 breaks down, redundancy real-time controller startup optimization, replaces real-time controller 32 to perform corresponding operation.
In like manner, at the scene redundancy engineer station and redundancy field control station can also be set in control device 4, its structure and annexation are identical with field control station 42 with above-mentioned engineer station 41 respectively, and when engineer station 41 and field control station 42 break down, replace performing corresponding operation.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; 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 (8)
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 detecting 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 carrying out 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, regulate the steam pressure of described Air-Cooling Island and the rotating speed of cooling blower to make described on-site control device;
Described optimized control device comprises: Optimized Service device and real-time controller;
Described Optimized Service device is connected with described signal transmission apparatus, for calculating pressure set points and cooling blower rotating speed to described Air-Cooling Island temperature; 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, for described pressure set points and cooling blower rotating speed are sent to described on-site control device by described interface equipment.
2. Air-Cooling Island temperature control system according to claim 1, 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 used 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.
3. Air-Cooling Island temperature control system according to claim 2, 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 pressure regulated quantity and wind speed regulated quantity respectively according to described 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.
4. Air-Cooling Island temperature control system according to claim 3, is characterized in that, described optimized control device also comprises the webserver;
The described webserver is connected with described Optimized Service device.
5. the Air-Cooling Island temperature control system according to claim 3 or 4, is characterized in that, described on-site control device also comprises: redundancy engineer station and redundancy field control station.
6. Air-Cooling Island temperature control system according to claim 5, is characterized in that, described engineer station is also connected by opc server with described Optimized Service device.
7. Air-Cooling Island temperature control system according to claim 6, 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 controling parameters of user's input and sending to described optimal controller, and shows the operational factor of Optimized Service device.
8. Air-Cooling Island temperature control system according to claim 6, 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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| CN103940257B true CN103940257B (en) | 2015-12-30 |
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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 |
| CN105157444B (en) * | 2015-03-30 | 2019-07-23 | 武汉理工大学 | Direct-type Air-Cooling Island axial flow blower intelligent control method and system |
| CN107277446B (en) * | 2017-06-30 | 2020-01-24 | 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 |
| 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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