CN102734164A - Intelligent control system of air-cooled screw air compressor - Google Patents
Intelligent control system of air-cooled screw air compressor Download PDFInfo
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- CN102734164A CN102734164A CN2012102529218A CN201210252921A CN102734164A CN 102734164 A CN102734164 A CN 102734164A CN 2012102529218 A CN2012102529218 A CN 2012102529218A CN 201210252921 A CN201210252921 A CN 201210252921A CN 102734164 A CN102734164 A CN 102734164A
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Abstract
The invention relates to an intelligent control system of an air-cooled screw air compressor, which is connected with an air compressor system and a user centralized control system, and comprises a PLC programmable logic controller, a fan frequency converter, a temperature sensor, a pressure sensor and a touch screen. The temperature sensor and the pressure sensor are connected with four paths of analog quantity input modules through shielded cables, and then are connected with a CPU central control unit. The PLC is connected with the four paths of the analog quantity input module; the first path of the analog quantity input module is connected with the fan frequency converter through a shielded cable; the frequency converter is connected with a fan motor of the air compressor system; the second and third paths of the analog quantity input modules are respectively connected with a compressor unit protective device; and the four path of the analog quantity input module is connected a compressor motor. The intelligent control system realizes the functions of settable user pressure control, PID closed-loop control of a cooling fan, switching of manual and automatic control functions, setting of control parameters on a display screen, displaying of measurement parameters and alarm parameters on the display screen, communication meeting standard communication protocol requirements, and the like.
Description
Technical field
The present invention relates to the intelligent control system of helical-lobe compressor, specifically relate to the air-cooled screw air compressor intelligent control system intelligent automatic control system of a kind of control able to programme (PLC) and man-machine interface (HMI).
Background technique
Because the extensive use of pressurized air in industrial field; Air compressor becomes requisite key equipment in the industrial department flow process; It not only can supply with the air of its required pressure, and can supply with its required raw air for separation equipment for instrument, automation equipment; Meanwhile, air compressor or high-energy equipment, its power consumption can reach China's gross generation about 15%.Along with the arrival of global energy crisis, countries in the world government is all for realizing that its continuable economic development actively promotes the power-saving technology of the energy, and wherein compressed air system has obtained vast concern.
Traditional screw formula compressor is common as the air-cooled form of employing, and general power can only be accomplished 250KW.In some large-scale mines, power plant, chemical industry, because lack of water need employing air-cooled usually, and its gas consumption is very big, more and more needs the large-scale screw rod air-cooled compressor of 315KW-500KW.But because Chinese region is very big, ambient temperature is very big in the north, south, the temperature difference in summer in winter.Avoid shutting down summer in order to guarantee south because of excessive discharge temperature causes malfunction alarm; Often dispose greatlyyer to cooler, cooling blower; Blower fan has only the Push And Release two states, can not waste the energy according to delivery temperature actual conditions adjustment output power; And air compressor is basically all used traditional nonshared control unit; This controller measurement and control point are very limited; Can't all include control system in to details measuring control points all in motor and the air compressor technological process, bring a lot of potential faults, increase the possibility of disorderly closedown to air compressor system; Also come the lot of unstable factor with the band of gas, as brought economic loss owing to air feed is not enough to the user.
In addition, traditional director demon solidifies, and hardware production is fully consistent with the software of its curing; Cause hardware and software version very many; Can't increase the control function by customer requirements, bring a lot of inconvenience for the design control system, can only satisfy part with the complexity that increases circuit like this and control requirement; The serious probability of failure that increases control system circuit pack in the running brings inconvenience to maintenance maintenance.
Based on above technology and control mode; Traditional control system of air compressor is for the air compressor unit of severe cold environment; The cooler supercooling of long term exposure in atmosphere, lubricating oil viscosity wherein is too high, and the lubricant oil during unit starting in the cooler is difficult for flowing; Thereby make the fuel injection quantity of head low excessively, the unit loading that starts after accomplishing causes the head high temperature alarm to be shut down.
In view of this, seek a kind of screw air compressor intelligent control system and become pursuing one's goal of these those skilled in the art.
Summary of the invention
Task of the present invention provides a kind of air-cooled screw air compressor intelligent control system; It has overcome the difficulty of existing technology; Have the user's pressure control that can set, blower fan is realized closed loop VFC (PID), according to the setting of the height and the target temperature of delivery temperature; The adjustment output power has been practiced thrift the energy.
Technical solution of the present invention is following:
A kind of air-cooled screw air compressor intelligent control system; It connects air compressor system and user's centralized control system, and said intelligent control system comprises PLC programmable controller (1), fan frequency converter (2), temperature transducer, pressure transducer and touch screen (3);
Said PLC programmable controller (1) comprises power supply, CPU central control unit, expansion module and 9 pin RS485 communication ports, and said 9 pin RS485 communication ports are connected with user's centralized control system through communication cable;
Said temperature transducer is connected four tunnel analog amount load modules with pressure transducer through shielded cable, connects the CPU central control unit through flat cable again;
Said PLC programmable controller (1) connects first via analog amount load module (41), the second tunnel analog amount load module (42), Third Road analog amount load module (43) and the four tunnel analog amount load module (44) in four tunnel analog amount load modules according to the order of sequence;
Said first via analog amount load module (41) connects fan frequency converter (2) through shielded cable; Frequency variator (2) connects the blower motor (11) of air compressor system, and said first via analog amount load module (41) connects the Compressor Group protective gear (12) of air compressor system again;
Said the second tunnel analog amount load module (42) is through the Compressor Group protective gear (12) of shielded cable connection air compressor system, and said the second tunnel analog amount load module (42) connects the compressor motor (13) of air compressor system again;
Said Third Road analog amount load module (43) is through the Compressor Group protective gear (12) of shielded cable connection air compressor system, and said Third Road analog amount load module (43) connects the compressor motor (13) of air compressor system again;
Said the four tunnel analog amount load module (44) connects the compressor motor (13) of air compressor system through shielded cable;
Said touch screen (3) connects PLC programmable controller (1) through communication cable.
The temperature signal feedback is set between said first via analog amount load module (41) and the frequency variator (2).
Said first via analog amount load module (41) and the middle pressure signal measuring point that is provided with of being connected of Compressor Group protective gear (12).
Said the second tunnel analog amount load module (42) and the middle pressure signal measuring point that is provided with of being connected of Compressor Group protective gear (12).
Said the second tunnel analog amount load module (42) is provided with the pressure signal measuring point with the centre that is connected of compressor motor (13), and motor three-phase current signal feedback is set between said the second tunnel analog amount load module (42) and the compressor motor (13) simultaneously.
Said Third Road analog amount load module (43) and the middle exhaust-system-oil spout temperature signal measurement point that is provided with of being connected of Compressor Group protective gear (12).
Said Third Road analog amount load module (43) and the middle motor winding temperature signal measurement point that is provided with of being connected of compressor motor (13).
Said the four tunnel analog amount load module (44) and being connected of compressor motor (13) middle be provided with motor front and back bearings temperature and motor winding temperature signal measurement point.
Said PLC programmable controller (1) also connects other control sections of air compressor through multi-core controlled cable.
Between said fan frequency converter (2) and the PLC programmable controller (1) is the closed loop VFC.
Functions such as that air-cooled screw air compressor intelligent control system of the present invention possesses simultaneously is energy-conservation, protection and supervision.The present invention has the user's pressure control that can set, and blower fan is realized closed loop VFC (PID), according to the setting of height and the target temperature of delivery temperature, adjusts output power, has practiced thrift the energy.
The present invention has the optional function of special increase: got rid of the possibility that chiller temperature is low excessively, lubricating oil viscosity is too high, head temperature is too high, startup is failed when starting; Press the air compressor technological requirement, realize PLC control able to programme fully, protection air compressor machine set system and motor itself have manually and the switching function of controlling automatically the switching function of long-range and local control; Control Parameter can be provided with on display screen, and measurement parameters such as exhaust pressure, delivery temperature and injection pressure all show on display screen HIM; Can increase the control function by customer requirements, it is convenient and swift to reach maintenance maintenance, has reduced the possibility of disorderly closedown; Stablize air feed, improve production work efficient.
The present invention utilizes Siemens S7-200PLC and expansion module to include measurement concrete in the air compressor technological process and control point in control system one by one, comprises all protections of motor in the air compressor unit.The present invention has overcome the defective of having only exhaust pressure and delivery temperature measuring point in traditional air compressor nonshared control unit; Protection for motor is also more comprehensive; Such as the conversion of passing through in the control system measurement of motor three phase circuit and standard signal, the overload of real-time judge motor, stall, phase shortage, short circuit and three-phase current unbalance; Through the measurement to motor front and back bearings temperature and three-phase winding temperature, measuring point early warning and warning stopping signal are accurately judged by system.The mechanical part protection of air compressor unit is more sound, and such as the measurement of passing through supply gas pressure, system pressure, injection pressure, the pressure of each several part in the technological process of intelligent control air compressor is avoided the overpressure damage equipment and jeopardized personal security; Measurement and intelligent decision through delivery temperature and system temperature provide the gas temperature that satisfies customer requirements.
The air-cooled blower fan of air compressor is a VFC in the intelligent control system of the present invention; Through calling the PID closed loop control function of frequency variator, realize according to the height of air compressor delivery temperature and oil spout temperature and the setting of target oil spout temperature adjustment frequency conversion frequency; Change output power, energy saving.Intelligent control system feeds back to frequency variator with the height of oil spout temperature; Frequency variator compares the oil spout temperature of this temperature and setting in real time; Real time altering frequency conversion frequency and output power; Reduced the possibility that stops blower fan, driven blower fan and freeze, satisfied the temperature requirement of stipulating in the system process to air compressor system.The target oil spout temperature of in frequency variator, setting can suitably be adjusted height according to different unit sizes in PID loop control theory and the industry.
Control system of the present invention has increased optional function, and the measurement of system temperature when not starting through ambient temperature or unit is under severe cold environment; After having started unit, load a period of time to unload a period of time simultaneously carry out (this time all can be set) repeatedly on touch screen, raise up to system temperature; Lubricating oil temperature raises in the cooler; When injection pressure rose simultaneously, when meeting adding unloading and require under the home behind the unit starting, this function finished.
The present invention is used for the air-cooled screw air compressor intelligent control system of UD400A type.Intelligent control system is pressed air compressor protection needs, the early warning and the warning of each measuring point of logic control respectively, and early warning is pointed out the user with the form of early warning signal, and does not stop unit.During alarm and protection, compressor emergency shutdown, the size of early warning value and alarming value all can be set on the Kunlun on-state color touch screen and changed, and operation and maintenance is convenient, and the unit of not working when suitable simultaneously low temperature environment is long starts requirement first.In addition, this control system avoids in the tradition control blower fan to open or to close according to the height of delivery temperature, and frequent starting has seriously shortened electrical endurance, and the state of opening can only not only waste energy but also intelligent inadequately by the output of rated power full power.
Air-cooled screw air compressor intelligent control system of the present invention has following characteristics:
1, the MCGS color touch is shielded the parameter that shows all measuring points on the main interface in real time, comprises the compressor operation time and the air compressor load time of calculating through program.
2, land password and be divided into user cipher and producer's password, select user or producer, input corresponding password and can revise customer parameter and producer's parameter at log-in interface by rank, to change because the power of the assembling unit is big or small and the protection value during working conditions change.
3, the interface is provided with manually and moves automatically throw over switch.Select manually to add unloading when manual; Select when automatic, unit loads automatically and unloads with low pressure limit according to the upper pressure limit that the user sets.
4, the user can click the maintenance parameters preview button that customer parameter is provided with the upper left corner, interface, checks the working time and the remaining time of lubricant oil, lubricating grease, air filter, oil strainer, deaerator, so that maintaining in time.After the maintaining, can remove zero clearing working time of these parts, start from scratch and recomputate working time, wait for maintaining next time by reset button.
5, in producer's parameter except setting early warning and alarming, starting the parameters such as protection; Can also click historical warning navigation button; Check the All Alerts that has taken place since the unit operation; Can retrieve user or producer by the time and want the historical failure of searching, so that maintenance and fix a breakdown, analyze the ride quality etc. of unit.
6,, can observe the real-time change trend of curves such as exhaust pressure, delivery temperature, system pressure, system temperature, oil spout temperature, to judge the runnability of unit at the real-time curve interface.
7, the MODBUS communication program writes the PLC system by routine, this system can be at any time mode through communication insert the DCS centralized control system, as substation work, important parameter is transferred in the middle of the DCS system; The access of also subsequent use passive contact signal of hardwire and remote switch amount; Normal start and stop unit and transmit the various states of unit to centralized control system when communication failure; Such as run signal, trouble signal, early warning signal etc., be convenient to operator's monitoring and operation.
8, have optional function: when not increasing mechanical hardware, overcome under the low temperature environment, low owing to lubricating oil temperature when starting unit, viscosity disaster flows the shortcoming that causes the head high temperature alarm tightly to stop.
Description of drawings
Fig. 1 is the circuit connection schematic representation that a kind of air-cooled screw air compressor intelligent control system of the present invention is specially power frequency air compressor intelligent control system.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Referring to Fig. 1; The invention provides a kind of air-cooled screw air compressor intelligent control system; It is connected with air compressor system and user's centralized control system, and this intelligent control system mainly is made up of PLC programmable controller 1, fan frequency converter 2, temperature transducer, pressure transducer and touch screen 3.
PLC programmable controller 1 comprises power supply, CPU central control unit, expansion module and 9 pin RS485 communication ports, and 9 pin RS485 communication ports are connected with user's centralized control system through communication cable.Temperature transducer is connected four tunnel analog amount load modules with pressure transducer through shielded cable, connects the CPU central control unit through flat cable again.
PLC programmable controller 1 connects first via analog amount load module 41 in four tunnel analog amount load modules, the second tunnel analog amount load module 42, Third Road analog amount load module 43 and the four tunnel analog amount load module 44 according to the order of sequence.
First via analog amount load module 41 connects fan frequency converter 2 through shielded cable, and frequency variator 2 connects the blower motor 11 of air compressor system, and first via analog amount load module 41 connects the Compressor Group protective gear 12 of air compressor system again.The temperature signal feedback is set between first via analog amount load module 41 and the frequency variator 2.First via analog amount load module 41 and the middle pressure signal measuring point that is provided with of being connected of Compressor Group protective gear 12.Be the closed loop VFC between fan frequency converter 2 and the PLC programmable controller 1.
The second tunnel analog amount load module 42 connects the compressor motor 13 of air compressor system again through Compressor Group protective gear 12, the second tunnel analog amount load module 42 of shielded cable connection air compressor system.The second tunnel analog amount load module 42 and the middle pressure signal measuring point that is provided with of being connected of Compressor Group protective gear 12.The second tunnel analog amount load module 42 is provided with the pressure signal measuring point with the centre that is connected of compressor motor 13, and motor three-phase current signal feedback is set between the second tunnel analog amount load module 42 and the compressor motor 13 simultaneously.
Third Road analog amount load module 43 is through the Compressor Group protective gear 12 of shielded cable connection air compressor system, and Third Road analog amount load module 43 connects the compressor motor 13 of air compressor system again.Third Road analog amount load module 43 and the middle exhaust-system-oil spout temperature signal measurement point that is provided with of being connected of Compressor Group protective gear 12.Third Road analog amount load module 43 and the middle motor winding temperature signal measurement point that is provided with of being connected of compressor motor 13.
The four tunnel analog amount load module 44 connects the compressor motor 13 of air compressor system through shielded cable.The four tunnel analog amount load module 44 and being connected of compressor motor 13 middle be provided with motor front and back bearings temperature and motor winding temperature signal measurement point.
Touch screen 3 connects PLC programmable controller 1 through communication cable.PLC programmable controller 1 also connects other control sections of air compressor through multi-core controlled cable.
In practical application, air-cooled screw air compressor intelligent control system of the present invention can be made up of touch screen, multi-core controlled cable, PLC control system, PLC expansion module, frequency variator and temperature, pressure transducer etc.
The PLC control system comprises power supply, CPU, expansion module and 9 pin RS485 communication ports.User DCS collection control center connects 9 pin RS485 communication ports through communication, gathers all measurements and Control Parameter.Pressure, temperature transducer connect the input of 4 tunnel analog amounts through shielded cable, are connected through flat cable between the expansion module and between expansion module and the CPU.Frequency variator receives the air compressor oil spout temperature signal from the PLC system, gives the PLC control system with the real time execution frequency feedback simultaneously.Touch screen is connected to the PORT COM of PLC control system through communication cable.Multi-core controlled cable connects PLC control system and air compressor system respectively.
The PLC programmable controller is Siemens PLC C; Touch screen is the Kunlun on-state touch screen; This intelligent control system is with the upper program of air compressor in the touch screen, and the application software that the Kunlun on-state software and control need is housed, and communication is connected between touch screen and the PLC; The definition and the address of PLC programmable controller communication port connect user's centralized control system DCS communication definition mode.
Intelligent control system of the present invention does not increase mechanical hardware, and lubricant oil flows in the following promotion of the low temperature severe cold environment air compressor cooler, prevents head high temperature, and corresponding to the parameter setting on the touch screen.
Used fan frequency converter is remittance river frequency variator, and closed loop PID control between the PLC, connects and is measured as air compressor blower fan closed loop PID and control, and is provided with the special parameter that meets this control needs in the frequency variator.
UD400A is the air-cooled air compressor unit of 400KW, explains as example.Intelligent control system is by the size of Siemens S7-200 series of PLC according to supply gas pressure; The upper and lower bound control of the supply gas pressure of setting according to the user; Prescribe a time limit greater than last when measuring supply gas pressure; Intelligent control system is sent unloader signal, and when measuring supply gas pressure less than down in limited time, intelligent control system is sent load signal.As long as behind the unit starting, it is on duty to need not personnel, just can be automatically intelligent work repeatedly, to satisfy user's air feed needs.
The startup function of optional suitable severe cold environment: through the measurement of ambient temperature or system temperature; Programmable controller PLC judges whether to launch this function, and the general recommendations ambient temperature starts this function when being lower than 15 ℃, main purpose be prevent cooler the inside in winter lubricant oil when long-time the shutdown; Cooler is exposed in the middle of the atmosphere environment; The lubricant oil supercooling, viscosity is too high, during machine startup since the low lubricant oil that is not easy to promote cooler of the pressure ratio of oil tank flow; Thereby make the fuel injection quantity of head low excessively, cause behind the compressor start loading automatically can produce high temperature protection and shut down.Therefore this function is set, when ambient temperature is lower than 15 ℃, will carries out after machine startup is accomplished and load 15S; Let system pressure rise rapidly, and then off-load 15S, let the temperature rise rising of machine slow down; Circulation is carried out; Till fan starting, change normal system over to and control automatically, control is identical down with non-low-temperature environment in the control of this moment.
The analog measurement point of this control system has: supply gas pressure signal, system pressure signal, injection pressure signal, frequency converter frequency feedback signal, ABC be each phase current, delivery temperature, system temperature, oil spout temperature, main frame motor ABC phase three-phase winding temperature, main frame motor front and back bearings temperature mutually.All analogue signal measuring points are equipped with the break alarm function, when one of which and a plurality of signal broken string or sensor damage, can in the warning hurdle, show the sensor disconnection fault of corresponding measuring point.All measured values all show on touch screen in real time; And all measuring points all are provided with early warning value and warning shutdown value in producer's parameter; Remind the user to take measures to avoid the further increase of undesirable element during early warning, also having avoided reports to the police easily shuts down, and influences and uses gas.But work as measured value and be higher than warning shutdown value, for the needs of protecting, the warning hurdle can show corresponding warning; Unit quits work, and the back unit of fixing a breakdown is resumed work, if when unit for a long time (this time can be set) when not loading unit quit work; When being lower than threshold pression, starting automatically and load air feed, when unit unloads Deng supply gas pressure; Supply gas pressure still is higher than upper pressure limit during a period of time, and the unit then high time-delay of pressure is shut down.
The setting of measuring point is the setting of analog amount input point; Demonstrate fully the control marrow of air compressor industry; Working principle according to system: when exhaust pressure is higher; System pressure must raise, and the setting of early warning and alarm and protection value is all arranged separately, has not only guaranteed that the needs of supply gas pressure but also the system of adequately protecting are unlikely to the pressure height and damage equipment.Such effect has been played in the setting of injection pressure: prevent because the deficiency that unit has been pressed in the system when just having started damage head when loading suddenly.The measurement of main frame motor three phase circuit has guaranteed that overload, stall, phase shortage, short circuit and three-phase current unbalance etc. appear in main frame, can in time shut down and does not burn out motor.The setting of system temperature and delivery temperature guarantees unit not high temperature and the pressurized gas that satisfy user's temperature requirement.The measurement of main frame motor front and back bearings temperature and three-phase winding temperature lets motor operations under rational temperature, and it is too high and damage bearing and winding to be unlikely to temperature.
In the middle of the air-cooled unit of screw-rod air compressor, cooling blower plays crucial effect, and the abundant mechanical system in the cooling work satisfies the air feed gas temperature of customer requirements.Cooling blower of the present invention adopts VFC and PLC system live signal to transmit, and the height of oil spout temperature passes to frequency variator through the mode of 4-20mA signal in the air compressor unit; Call the PID closed loop control of frequency variator; The desired value of oil spout temperature is set in frequency variator, and the size of output frequency is adjusted in frequency conversion in real time, changes output power; By the target temperature work of setting, reduce the output of idle work.
The input of the switching value of this intelligent system comprises: stop in emergency, high pressure cabinet fault, phase sequence, oil cooling blower fan overload, back air cooler overload, the action of oil strainer pressure reduction, the action of oil separator pressure reduction, the action of air filter pressure reduction, frequency converter failure etc.; In conjunction with collection and the early warning and the warning of analog amount, accomplish to protect fully whole air compressor system to comprise machinery and motor etc.
In practical application, the interface is set the login user parameter and producer's parameter is provided with the interface, sets relevant parameters, selects manually operation or operation automatically, and after choosing, the corresponding tutorial light on the touch screen can convert redness to by blueness.Under the manual running state, press start button, intelligent control system starts unit judging that unit does not have under the situation of fault, after startup is accomplished, adds unloading at main interface with manual loading or manual unload button manual work.Under automatic operation conditions, system judges by logic and parameter is provided with the startup unit, can automatically control air inflow according to gas consumption according to supply gas pressure upper and lower setting value after startup is accomplished, and promptly opens air intake valve or closes air intake valve.
In sum; Air-cooled screw air compressor intelligent control system of the present invention has realized the user's pressure control that can set; The PID closed loop control of cooling blower; Manually with the switching of control function automatically, Control Parameter can be provided with on display screen, and measurement parameter and alarm parameters show on display screen etc. that communication meets functions such as standard communications protocol requirement.
Certainly; Those skilled in the art in the present technique field will be appreciated that; The foregoing description only is to be used for explaining the present invention; And be not with opposing qualification of the present invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention the variation of above-mentioned enforcement, modification etc.
Claims (10)
1. air-cooled screw air compressor intelligent control system; It connects air compressor system and user's centralized control system, and it is characterized in that: said intelligent control system comprises PLC programmable controller (1), fan frequency converter (2), temperature transducer, pressure transducer and touch screen (3);
Said PLC programmable controller (1) comprises power supply, CPU central control unit, expansion module and 9 pin RS485 communication ports, and said 9 pin RS485 communication ports are connected with user's centralized control system through communication cable;
Said temperature transducer is connected four tunnel analog amount load modules with pressure transducer through shielded cable, connects the CPU central control unit through flat cable again;
Said PLC programmable controller (1) connects first via analog amount load module (41), the second tunnel analog amount load module (42), Third Road analog amount load module (43) and the four tunnel analog amount load module (44) in four tunnel analog amount load modules according to the order of sequence;
Said first via analog amount load module (41) connects fan frequency converter (2) through shielded cable; Frequency variator (2) connects the blower motor (11) of air compressor system, and said first via analog amount load module (41) connects the Compressor Group protective gear (12) of air compressor system again;
Said the second tunnel analog amount load module (42) is through the Compressor Group protective gear (12) of shielded cable connection air compressor system, and said the second tunnel analog amount load module (42) connects the compressor motor (13) of air compressor system again;
Said Third Road analog amount load module (43) is through the Compressor Group protective gear (12) of shielded cable connection air compressor system, and said Third Road analog amount load module (43) connects the compressor motor (13) of air compressor system again;
Said the four tunnel analog amount load module (44) connects the compressor motor (13) of air compressor system through shielded cable;
Said touch screen (3) connects PLC programmable controller (1) through communication cable.
2. air-cooled screw air compressor intelligent control system according to claim 1 is characterized in that: the temperature signal feedback is set between said first via analog amount load module (41) and the frequency variator (2).
3. air-cooled screw air compressor intelligent control system according to claim 1 is characterized in that: said first via analog amount load module (41) and the middle pressure signal measuring point that is provided with of being connected of Compressor Group protective gear (12).
4. air-cooled screw air compressor intelligent control system according to claim 1 is characterized in that: said the second tunnel analog amount load module (42) and the middle pressure signal measuring point that is provided with of being connected of Compressor Group protective gear (12).
5. air-cooled screw air compressor intelligent control system according to claim 1; It is characterized in that: said the second tunnel analog amount load module (42) is provided with the pressure signal measuring point with the centre that is connected of compressor motor (13), and motor three-phase current signal feedback is set between said the second tunnel analog amount load module (42) and the compressor motor (13) simultaneously.
6. air-cooled screw air compressor intelligent control system according to claim 1 is characterized in that: said Third Road analog amount load module (43) and the middle exhaust-system-oil spout temperature signal measurement point that is provided with of being connected of Compressor Group protective gear (12).
7. air-cooled screw air compressor intelligent control system according to claim 1 is characterized in that: said Third Road analog amount load module (43) and the middle motor winding temperature signal measurement point that is provided with of being connected of compressor motor (13).
8. air-cooled screw air compressor intelligent control system according to claim 1 is characterized in that: said the four tunnel analog amount load module (44) and being connected of compressor motor (13) middle be provided with motor front and back bearings temperature and motor winding temperature signal measurement point.
9. air-cooled screw air compressor intelligent control system according to claim 1 is characterized in that: said PLC programmable controller (1) also connects other control sections of air compressor through multi-core controlled cable.
10. air-cooled screw air compressor intelligent control system according to claim 1 is characterized in that: be the closed loop VFC between said fan frequency converter (2) and the PLC programmable controller (1).
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070090324A (en) * | 2006-03-02 | 2007-09-06 | 전남대학교산학협력단 | The apparatus of automatic gas sampler |
| CN201407155Y (en) * | 2009-02-27 | 2010-02-17 | 南京昱天高新能源科技发展有限公司 | Intelligent energy-saving control device for air compressor |
| KR101064538B1 (en) * | 2011-05-25 | 2011-09-14 | 주식회사 건영기계 | Smart air compressor system |
| CN202144794U (en) * | 2011-07-21 | 2012-02-15 | 上海优耐特斯压缩机有限公司 | Screw compressor frequency conversion one-controlling-three system |
| CN202144780U (en) * | 2011-07-21 | 2012-02-15 | 上海优耐特斯压缩机有限公司 | Intelligent control system for air intake valve of power frequency air compressor |
| CN202690447U (en) * | 2012-07-20 | 2013-01-23 | 上海优耐特斯压缩机有限公司 | Intelligent control system for air-cooled screw air compressor |
-
2012
- 2012-07-20 CN CN201210252921.8A patent/CN102734164B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070090324A (en) * | 2006-03-02 | 2007-09-06 | 전남대학교산학협력단 | The apparatus of automatic gas sampler |
| CN201407155Y (en) * | 2009-02-27 | 2010-02-17 | 南京昱天高新能源科技发展有限公司 | Intelligent energy-saving control device for air compressor |
| KR101064538B1 (en) * | 2011-05-25 | 2011-09-14 | 주식회사 건영기계 | Smart air compressor system |
| CN202144794U (en) * | 2011-07-21 | 2012-02-15 | 上海优耐特斯压缩机有限公司 | Screw compressor frequency conversion one-controlling-three system |
| CN202144780U (en) * | 2011-07-21 | 2012-02-15 | 上海优耐特斯压缩机有限公司 | Intelligent control system for air intake valve of power frequency air compressor |
| CN202690447U (en) * | 2012-07-20 | 2013-01-23 | 上海优耐特斯压缩机有限公司 | Intelligent control system for air-cooled screw air compressor |
Non-Patent Citations (1)
| Title |
|---|
| 李方园等: ""可编程控制器在纸厂恒量设备技改中的应用"", 《国际造纸》, vol. 21, no. 5, 30 October 2002 (2002-10-30) * |
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| CN103939321A (en) * | 2014-04-02 | 2014-07-23 | 邯郸美的制冷设备有限公司 | Control method and device for air conditioner compressor starting |
| CN104141604A (en) * | 2014-06-30 | 2014-11-12 | 深圳市英威腾电气股份有限公司 | Frequency converter special for air compressor and air compressor variable-frequency drive control system |
| CN104533794A (en) * | 2014-10-31 | 2015-04-22 | 苏州新亚科技有限公司 | Parallel-connection unit controller of separation type screw rod compressor |
| CN104533770A (en) * | 2014-11-26 | 2015-04-22 | 贵州中电振华精密机械有限公司 | Protection method for effectively preventing damage to air compressor |
| CN105526397A (en) * | 2015-12-15 | 2016-04-27 | 武汉钢铁(集团)公司 | Universal regulating valve PID control method |
| CN106016878A (en) * | 2016-05-11 | 2016-10-12 | 济南欧菲特制冷设备有限公司 | Controller for single screw machine unit and parallel screw machine unit |
| CN108799081A (en) * | 2018-08-13 | 2018-11-13 | 安徽纽威吉新能源汽车技术有限公司 | A kind of control system of automobile air conditioner compressor |
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