CN202165326U - Industry centrifugal compressor surge-proof control device - Google Patents
Industry centrifugal compressor surge-proof control device Download PDFInfo
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- CN202165326U CN202165326U CN2011202246597U CN201120224659U CN202165326U CN 202165326 U CN202165326 U CN 202165326U CN 2011202246597 U CN2011202246597 U CN 2011202246597U CN 201120224659 U CN201120224659 U CN 201120224659U CN 202165326 U CN202165326 U CN 202165326U
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Abstract
The utility model relates to an industry centrifugal compressor surge-proof control device, comprising a surge-proof controller, a control object unit and a host computer monitoring unit, wherein the surge-proof controller comprises a power supply module, a PLC control unit, an analog input module and an analog output module; the power supply module is connected with the PLC control unit, the analog input module and the analog output module; the analog input module and the analog output module are respectively connected with the PLC control unit; the analog input module is used for receiving the analog pressure and the flow signal send by a detection unit in the control object unit and sending the received signal to the PLC control unit; the PLC control unit is used for processing the received signal by the fuzzy control algorithm and outputting the de-molded and fuzzified accurate control signal to the analog output module; the analog output module is used for outputting the de-molded and fuzzified accurate control signal to a surge-proof control valve in the control object unit.
Description
Technical field
The utility model relates to a kind of industrial centrifugal compressor anti-surge control device, belongs to automation control area, relates in particular to a kind of centrifugal compressor anti-surge control device of Fuzzy Adaptive PID Control.
Background technique
Along with the development of Chemical Manufacture, be widely used in industrial centrifugal compressor and maximize day by day and high automation.Current, China's centrifugal compressor is still relatively backward in the configuration of control and monitoring system, and automaticity is lower; In contrast to this, American-European countries has reached higher level.
Surge is very big to the harm of centrifugal compressor.When centrifugal compressor generation surge, system's cisco unity malfunction, outlet pressure reduces; When outlet pressure is lower than the outlet conduit system pressure; Gas will be from pipe-line system to the inner refluence of centrifugal compressor, and when pressure was lower than compressor delivery pressure in pipe-line system, refluence stopped.Centrifugal compressor is resumed work, but when the pressure recovery of outlet conduit system during to initial value, and the gas flow through compressor reduces again; So repeatedly; Whole system is periodic swinging, and affiliated facilities such as the sealing in the centrifugal compressor, bearing and impeller are caused very big damage, and centrifugal compressor can be damaged when serious; This all is very disadvantageous to drive system, even makes the whole production system paralysis.
The tradition Anti-surge Control adopts the fixed limit scheme, has promptly determined it just for anti-surge is a purpose, rather than the size that adjustment is loaded according to state of arts, generally is applicable to and decides rotating speed or the less unit of rotation speed change scope.If in the lower scope operation of generating unit speed, can cause flow nargin excessive, energy dissipation is serious, is unfavorable for energy-conservation.Traditional centrifugal formula compressor adopts pid control algorithm, because system is difficult in and all reaches stable under any operating mode, the adjusting of gas pressure has characteristics such as bigger time variation, large time delay, non-linear, strong coupling, is difficult to set up a precise math model.Parameter tuning can not reach dynamic self-adapting, is difficult to obtain satisfied dynamic response characteristic.Have certain narrow limitation, its performance depends on the situation of adjusting of parameter, and has contradiction between rapidity and the overshoot.For the controlling object of this type complicacy, adopt conventional PID control, parameter tuning can not reach dynamic self-adapting, is difficult to obtain satisfied dynamic response characteristic.Conventional pid algorithm lacks advanced control pressurer system device and matches with it, is difficult to accomplish the anti-anti-asthma task of favorable industrial centrifugal compressor, and its consequence is that device efficiency is low, has strengthened energy consumption, has directly influenced commercial production.
Summary of the invention
The utility model will solve traditional centrifugal compressor device traditional PI D Anti-surge Control and have the problem that efficient is low, energy consumption is big, and the industrial centrifugal compressor anti-surge control device of the Fuzzy Adaptive PID Control that a kind of efficient is high, energy consumption is little is provided.
The technological scheme of the utility model is:
A kind of industrial centrifugal compressor anti-surge control device; Comprise surge-proofing controller, controlling object unit and ipc monitor unit; Said surge-proofing controller is connected with the ipc monitor unit; It is characterized in that: said surge-proofing controller comprises power module, PLC control unit, analog amount load module, analog output module; Said power module connects said PLC control unit, analog amount load module and analog output module, and said analog amount load module and analog output module are connected on the said PLC control unit;
Said controlling object unit comprises centrifugal compressor, detection unit and the performance element on the steam turbine; Said detection unit comprises inlet pressure sensor, inlet flow rate differential pressure pickup and the back pressure transducer that is arranged in the centrifugal compressor pipe network, and said inlet pressure sensor, inlet flow rate differential pressure pickup and back pressure transducer all are connected with the analog amount load module; Said performance element comprises the Anti-surge Control valve of air inlet unit of flow with the unit of flow of giving vent to anger of equilibrium centrifugation compressor, and said Anti-surge Control valve is connected with analog output module;
Said analog amount load module is used to receive analog amount pressure that detection unit sends and flux signal and the signal that collects is sent to the PLC control unit;
Said PLC control unit be used for the signal that receives carry out that FUZZY ALGORITHMS FOR CONTROL is handled and the output defuzzification after accurate control signal give analog output module;
Said analog output module is used for the accurate control signal after the defuzzification is exported to the Anti-surge Control valve.
Further, said ipc monitor unit is a computer, and described computer is connected with said PLC control unit through Ethernet.
Inlet pressure sensor in the centrifugal compressor pipe network, inlet flow rate differential pressure pickup and back pressure transducer convert real-time detected pressure signal into the current signal of 4 ~ 20mA; Be sent in the analog amount load module; The analog amount load module is sent the signal that collects into the PLC control unit, and the PLC control unit utilizes FUZZY ALGORITHMS FOR CONTROL and fuzzy control rule that information is handled, through fuzzy reasoning Decision Control amount; Carry out the Fuzzy Adaptive PID algorithm controls; Fuzzy control quantity converts accurate controlled quentity controlled variable into through defuzzification, through analog output module, the accurate control signal behind the ambiguity solution is outputed to the given interface of frequency of frequency variator; Accurately control the aperture of Anti-surge Control valve; Automatically change and adjusting import ductwork pressure, the air inlet unit of flow of control centrifugal compressor and the balance of the unit of flow of giving vent to anger are accomplished the intelligent Balance Control process of ductwork pressure.Circulation is carried out according to this, has guaranteed controllability, accuracy and the timely and effective property of ductwork pressure.
The utility model can be accomplished functions such as on-site parameters setting, the method for operation are set up, various parameter demonstration, running state, alarm logging, data statistics jointly through above-mentioned each unit.
During normal the operation, when antisurge control system was not worked, just bypass valve cut out, and flow at this moment and original inlet flow rate are basic identical.Along with the variation with the import export pressure flow, the software inhouse algorithm of surge-proofing controller through whole Surge Prevention System calculates the flow change rate of circulation compressor through the pressure reduction before and after the flow-measurement orifice, and with this value and ideal value relatively.The PLC control unit is accomplished PID fuzzy control parameter optimizing work automatically, provides best pid control parameter to adjust the aperture of this Anti-surge Control valve, and operating point will be positioned at surge control graph ideal range, suppress the generation of surging phenomenon.
The beneficial effect of the utility model:
(1) the centrifugal compressor Anti-surge Control intelligent apparatus of the described Fuzzy Adaptive PID Control of the utility model; Change traditional centrifugal compressor pid control mode; Fuzzy Adaptive PID Control technology and advanced person's computer is soft, hardware technology perfect adaptation is got up, and according to the automatic optimal work of PLC control unit realization pid parameter, compares the traditional centrifugal compressor set; It is little that relevant anti-surge parameter is had overshoot; The adjustment time is short, and response is fast, and transient process is steady, stable, output control accuracy advantages of higher.
(2) the centrifugal compressor Anti-surge Control intelligent apparatus of the described Fuzzy Adaptive PID Control of the utility model; Fuzzy control combines with PLC, has both shown that reliable, flexible, the adaptable characteristics of PLC have also improved the intelligentized degree of control system greatly, and it is flexible to have a programming mode; Restrictive condition is few; Fuzzy variable and fuzzy control rule do not receive characteristics such as system hardware restriction, have reduced the development cost of system, have enlarged application area.
(3) the anti-surge Fuzzy Adaptive PID Control can reach and the corresponding to effect of working control requirement, according to the aperture that the size of flow can effectively be regulated Anti-surge Control valve (backflow adjusting bypass valve), has avoided the disposable waste energy of opening.So should technology use in a large number, its economic benefit is very considerable.
Description of drawings
Fig. 1 is the general structure schematic representation of the utility model.
Embodiment
With reference to Fig. 1; A kind of industrial centrifugal compressor anti-surge control device; Comprise surge-proofing controller 7, controlling object unit 10 and ipc monitor unit 1; Said surge-proofing controller 7 is connected with ipc monitor unit 1; Said surge-proofing controller 1 comprises power module 3, PLC control unit 4, analog amount load module 5, analog output module 6, and said power module 3 connects said PLC control unit 4, analog amount load module 5 and analog output module 6, and said analog amount load module 5 is connected on the said PLC control unit 4 with analog output module 6;
Said controlling object unit 10 comprises centrifugal compressor 9, detection unit and the performance element on the steam turbine 8; Said detection unit comprises inlet pressure sensor 12, inlet flow rate differential pressure pickup 11 and the back pressure transducer 13 that is arranged in centrifugal compressor 9 pipe networks, and said inlet pressure sensor 12, inlet flow rate differential pressure pickup 11 all are connected with analog amount load module 5 with back pressure transducer 13; Said performance element comprises air inlet unit 14 flows of equilibrium centrifugation compressor 9 and the Anti-surge Control valve 16 of unit 15 flows of giving vent to anger, and said Anti-surge Control valve 16 is connected with analog output module 6;
Said analog amount load module 5 is used to receive analog amount pressure that detection unit sends and flux signal and the signal that collects is sent to PLC control unit 4;
Said PLC control unit 4 be used for the signal that receives carry out that FUZZY ALGORITHMS FOR CONTROL is handled and the output defuzzification after accurate control signal give analog output module 6;
Said analog output module 6 is used for the accurate control signal after the defuzzification is exported to Anti-surge Control valve 16.
Said ipc monitor unit 1 is a computer, and described computer is connected with said PLC control unit 4 through Ethernet 2.
The control of the surge-proofing controller 7 of the utility model, the inlet flow rate of needs control centrifugal compressor 9 makes it be not less than the anti-asthma setting value.Through changing the aperture of Anti-surge Control valve 16, change capacity of reflux, thereby increase centrifugal compressor 9 inlet flow rates, prevent centrifugal compressor 9 surges.Adopt two-dimensional fuzzy controller to accomplish control.Flowmeter through being installed in centrifugal compressor 9 inlets comes inlet flow rate is detected; Every interval certain hour is sampled to flow; Thereby obtain e and ec, wherein e is the poor of measured value and setting value, and ec is the sampling variance ratio of e; Through certain fuzzy self-adaption rule, get the controlled quentity controlled variable U of the aperture of Anti-surge Control valve 16 as fuzzy controller.The adaptive Fuzzy PID Control device changes ec as input with the flow error e and the error of compressor; Find out the fuzzy relation of 3 parameters of PID controller and e and ec earlier; System constantly detects e and ec, obtains three PID corrected parameter △ Kp, △ Ki, △ Kd according to relevant fuzzy theory, constantly 3 parameters of PID is carried out online modification; Come to satisfy the e in the different moment and the requirement that ec adjusts to pid parameter certainly like this, control target can obtain good dynamic and static properties.Kp, Ki, Kd are ratio, integration, the differential coefficient after adjusting.Output μ (k) multiply by corresponding scale factor K u and just can draw accurate output quantity U.Controlled quentity controlled variable is exported U send into analog output module 6, the output of control Anti-surge Control valve 16, thereby the aperture of control Anti-surge Control valve 16.
Supervisory system is accomplished functions such as on-site parameters setting, the method for operation are set up, various parameter demonstration, running state, alarm logging, data statistics jointly by ipc monitor system 1 and EPA communication network 2 through above-mentioned each unit.
The described content of this specification embodiment only is enumerating the way of realization of model utility design; Should not being regarded as of the protection domain of the utility model only limits to the concrete form that embodiment states, the protection domain of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (2)
1. industrial centrifugal compressor anti-surge control device; Comprise surge-proofing controller, controlling object unit and ipc monitor unit; Said surge-proofing controller is connected with the ipc monitor unit; It is characterized in that: said surge-proofing controller comprises power module, PLC control unit, analog amount load module, analog output module; Said power module connects said PLC control unit, analog amount load module and analog output module, and said analog amount load module and analog output module are connected on the said PLC control unit;
Said controlling object unit comprises centrifugal compressor, detection unit and the performance element on the steam turbine; Said detection unit comprises inlet pressure sensor, inlet flow rate differential pressure pickup and the back pressure transducer that is arranged in the centrifugal compressor pipe network, and said inlet pressure sensor, inlet flow rate differential pressure pickup and back pressure transducer all are connected with the analog amount load module; Said performance element comprises the Anti-surge Control valve of air inlet unit of flow with the unit of flow of giving vent to anger of equilibrium centrifugation compressor, and said Anti-surge Control valve is connected with analog output module;
Said analog amount load module is used to receive analog amount pressure that detection unit sends and flux signal and the signal that collects is sent to the PLC control unit;
Said PLC control unit be used for the signal that receives carry out that FUZZY ALGORITHMS FOR CONTROL is handled and the output defuzzification after accurate control signal give analog output module;
Said analog output module is used for the accurate control signal after the defuzzification is exported to the Anti-surge Control valve.
2. a kind of industrial centrifugal compressor anti-surge control device according to claim 1 is characterized in that: said ipc monitor unit is a computer, and described computer is connected with said PLC control unit through Ethernet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202246597U CN202165326U (en) | 2011-06-29 | 2011-06-29 | Industry centrifugal compressor surge-proof control device |
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| CN2011202246597U CN202165326U (en) | 2011-06-29 | 2011-06-29 | Industry centrifugal compressor surge-proof control device |
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| CN202165326U true CN202165326U (en) | 2012-03-14 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343748A (en) * | 2013-07-04 | 2013-10-09 | 连云港杰瑞网络有限公司 | Multi-stage centrifugal compressor constant pressure control device based on PLC |
| CN103967793A (en) * | 2014-05-19 | 2014-08-06 | 意朗实业（上海）有限公司 | Screw compressor directly driven by turbine and driving method |
| CN104110393A (en) * | 2013-04-19 | 2014-10-22 | 三星泰科威株式会社 | Compressor system and method of controlling the same |
| CN104728151A (en) * | 2015-04-09 | 2015-06-24 | 中国空气动力研究与发展中心高速空气动力研究所 | Axial flow compressor surge boundary measurement system |
| CN105257580A (en) * | 2015-11-17 | 2016-01-20 | 神华集团有限责任公司 | Control system and method used for reaction gas compressor |
| CN105626266A (en) * | 2016-01-12 | 2016-06-01 | 中国科学院工程热物理研究所 | Anti-surge air escape energy recycling system of gas turbine |
| CN105716669A (en) * | 2016-03-18 | 2016-06-29 | 浙江西田机械有限公司 | Turbine compressor flow detection device |
| CN106224278A (en) * | 2016-08-31 | 2016-12-14 | 沈阳鼓风机集团自动控制系统工程有限公司 | A kind of compressor control system automatic generation method and device |
| CN108628170A (en) * | 2018-06-13 | 2018-10-09 | 合肥托卡拉图科技有限公司 | The amount of outputting and inputting discretization determines method in compressor anti-surge fuzzy controller |
| CN109488625A (en) * | 2017-09-12 | 2019-03-19 | 汉民科技股份有限公司 | Method for assessing turbocharger surge condition and computer program product thereof |
| CN111207066A (en) * | 2018-11-22 | 2020-05-29 | 青岛海尔空调电子有限公司 | Compressor parameter measuring device, measuring method and setting method |
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2011
- 2011-06-29 CN CN2011202246597U patent/CN202165326U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110393B (en) * | 2013-04-19 | 2018-02-13 | 韩华泰科株式会社 | Compressor assembly and the method for controlling the compressor assembly |
| CN104110393A (en) * | 2013-04-19 | 2014-10-22 | 三星泰科威株式会社 | Compressor system and method of controlling the same |
| CN103343748A (en) * | 2013-07-04 | 2013-10-09 | 连云港杰瑞网络有限公司 | Multi-stage centrifugal compressor constant pressure control device based on PLC |
| CN103967793A (en) * | 2014-05-19 | 2014-08-06 | 意朗实业（上海）有限公司 | Screw compressor directly driven by turbine and driving method |
| CN104728151A (en) * | 2015-04-09 | 2015-06-24 | 中国空气动力研究与发展中心高速空气动力研究所 | Axial flow compressor surge boundary measurement system |
| CN105257580A (en) * | 2015-11-17 | 2016-01-20 | 神华集团有限责任公司 | Control system and method used for reaction gas compressor |
| CN105626266A (en) * | 2016-01-12 | 2016-06-01 | 中国科学院工程热物理研究所 | Anti-surge air escape energy recycling system of gas turbine |
| CN105716669A (en) * | 2016-03-18 | 2016-06-29 | 浙江西田机械有限公司 | Turbine compressor flow detection device |
| CN106224278A (en) * | 2016-08-31 | 2016-12-14 | 沈阳鼓风机集团自动控制系统工程有限公司 | A kind of compressor control system automatic generation method and device |
| CN109488625A (en) * | 2017-09-12 | 2019-03-19 | 汉民科技股份有限公司 | Method for assessing turbocharger surge condition and computer program product thereof |
| CN109488625B (en) * | 2017-09-12 | 2020-09-01 | 汉民科技股份有限公司 | Method for assessing turbocharger surge condition and computer program product thereof |
| CN108628170A (en) * | 2018-06-13 | 2018-10-09 | 合肥托卡拉图科技有限公司 | The amount of outputting and inputting discretization determines method in compressor anti-surge fuzzy controller |
| CN111207066A (en) * | 2018-11-22 | 2020-05-29 | 青岛海尔空调电子有限公司 | Compressor parameter measuring device, measuring method and setting method |
| CN111207066B (en) * | 2018-11-22 | 2024-06-07 | 青岛海尔空调电子有限公司 | Compressor parameter measuring device, measuring method and setting method |
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Legal Events
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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: 20120314 Termination date: 20140629 |
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| EXPY | Termination of patent right or utility model |