CN104179707B - The control method of air compression system and system - Google Patents
The control method of air compression system and system Download PDFInfo
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- CN104179707B CN104179707B CN201410387751.3A CN201410387751A CN104179707B CN 104179707 B CN104179707 B CN 104179707B CN 201410387751 A CN201410387751 A CN 201410387751A CN 104179707 B CN104179707 B CN 104179707B
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Abstract
The invention provides a kind of control method of air compression system, described air compression system has at least comprised air accumulator and the some air compressor machines that are attached thereto, this control method comprises pressure control procedure: in the process of air compressing, detect the air pressure in air accumulator; If detect the lower limit that the force value obtaining is less than goal pressure, load some air compressor machines wherein according to a kind of default both gradeds; If detect that the force value that obtains is greater than goal pressure upper in limited time, unload several air compressor machines wherein according to default both gradeds contrary when loading. Realize the Energy Saving Control of air compression system.
Description
Technical field
The present invention relates to a kind of improvement to air compression system, relate in particular to a kind of control of air compression systemMethod and system processed.
Background technology
Air compression system of the prior art mainly comprises air compressor, air accumulator, drying machine, filtrationDevice, gas pipeline and some valves, wherein, compressed-air actuated output, air enters through air compressorGas port gathers, and after the head compression of air compressor, sprays and enters storage from the gas outlet of air compressorIn gas tank. Owing to ejecting compressed air and have temperature difference in gas outlet after the air of air inlet collection and work done,Must separate out most condensed water simultaneously containing a small amount of oil and impurity, after sedimentation, discharge through dirty mouthful.
In the compressed air system of a lot of curstomer's sites, because client is for being unfamiliar with of system, cause clientThere is the operation of a lot of machines or arrange and all have very large waste or unreasonable.
Summary of the invention
The technical problem to be solved in the present invention is how to realize the Energy Saving Control of air compression system.
In order to solve this technical problem, the invention provides a kind of control method of air compression system, instituteState air compression system and at least comprised air accumulator and the some air compressor machines that are attached thereto, this control method bagDraw together pressure control procedure:
In the process of air compressing, detect the air pressure in air accumulator;
If detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of default both gradedsLoad some air compressor machines wherein;
If detect that the force value that obtains is greater than goal pressure upper in limited time, according to default contrary when loadingBoth gradeds unload several air compressor machines wherein;
Described some air compressor machines comprise at least one frequency conversion air compressor, according to a kind of default both gradedsWhile loading some air compressor machines wherein, originate in a described frequency conversion air compressor.
Default both gradeds prestore multiple, before the air pressure that detects air accumulator, also comprise and select itThe process of middle a kind of default both gradeds.
In the time loading some air compressor machines wherein according to a kind of default both gradeds, load after an air compressor machine,Also judge whether to carry out next air compressor machine according to the pressure rise trend that detects and default decision logicLoad.
Described some air compressor machines comprise some centrifugal air compressors, and this control method also comprises that anti-emptying load is equalDivide process:
Obtain the open degree situation of intake valve, by-passing valve and the atmospheric valve of centrifugal air compressor;
Divide equally gain to the described centrifugal air compressor in emptying just according to the open degree situation timed sending that obtains,Make the open degree of intake valve of centrifugal air compressor wherein convergent, the by-passing valve of centrifugal air compressor whereinOpen degree is also convergent, and intake valve and by-passing valve overall open degree separately meet pneumatics demand.
Timed sending is divided equally gain to just after the described centrifugal air compressor of emptying, if centrifugal air compressor is not receivedNew yield value, original yield value lost efficacy the delay time warp default later.
Described some air compressor machines comprise some centrifugal air compressors, and this control method also comprises that intake valve load is equalDivide process:
Obtain the open degree situation of intake valve, by-passing valve and the atmospheric valve of centrifugal air compressor;
When all centrifugal air compressors are all when the state at full capacity, loading or regulating, timing toIntake valve valve opening degree does not send and divides equally gain to 100% centrifugal air compressor, increases its open degree.
The present invention also provides a kind of control system of air compression system, at least comprises that air compression station, pressure becomeSend device and control module, the some air compressor machines that are provided with air accumulator in described air compression station and are attached thereto, described inPressure transmitter be installed in described air accumulator or the female pipe of its air upper, described control module respectively with described skyPress is connected with pressure transmitter;
Described pressure transmitter, in order in the process of air compressing, detects the air pressure in air accumulator;
Described control module is at least in order to according to empty described in the parameter of setting and the force value control that obtains of detectionPress, if detect the lower limit that the force value that obtains is less than goal pressure, according to a kind of default set timeOrder loads some air compressor machines wherein; Prescribe a time limit if the force value that detection obtains is greater than the upper of goal pressure, pressUnload several air compressor machines wherein according to default both gradeds contrary when loading.
Default both gradeds prestore multiple, and described control module, also in order to respond input operation, is selected itMiddle a kind of default both gradeds.
In the time loading some air compressor machines wherein according to a kind of default both gradeds, load after an air compressor machine,Described control module also in order to judge whether according to the pressure rise trend that detects and default decision logic intoThe loading of next air compressor machine of row.
Described some air compressor machines comprise at least one frequency conversion air compressor, according to a kind of default both gradedsWhile loading some air compressor machines wherein, described control module originates in a described frequency conversion pneumatics in order to control itMachine.
The control system of described air compression system also comprises center, high in the clouds, router and Surveillance center, instituteState control module by air compressor machine described in the control of some PLC equipment, described Surveillance center and control module pass throughDescribed router is interconnected, and described PLC equipment and pressure transmission device are by described control module and described routerBetween realize transfer of data, described router is connected in internet, and then by internet and center, described high in the cloudsConnect.
Described router is desktop type technical grade wireless router IR601, and described Surveillance center and control module are logicalCross described router and be jointly connected in an IPSECVPN network, and one of described Surveillance center configuration is fixingPublic network IP.
Number is also realized by being installed between web software on terminal device and terminal device in center, described high in the cloudsAccording to transmission transfer, described web software is at least in order to realize following one of at least function:
Judge whether to need to report to the police according to the data that receive from center, described high in the clouds, if desired report to the police, push awayThe alarming information of delivering newspaper;
Response user's operation, transfers system running state and parameter on described cloud server, thereby entersRow shows;
According to the Automatic generation of information of the data that receive from Cloud Server, the data that prestore and other people inputWith storage form;
Response user's operation, shows data in a different manner.
The present invention is used in combination by pressure transmitter and control module, detects that pressure is lower than target settingWhen low pressure limit, will automatically load corresponding air compressor machine according to the compressor operation order of setting; In systemPressure is higher than prescribing a time limit in set target pressure, by automatically corresponding according to the compressor operation order unloading of settingAir compressor machine, will autostop after the long-time unloading of air compressor machine, to save energy resource consumption. Visible, the present inventionRealize the energy-conservation of air compression system.
Brief description of the drawings
Fig. 1 is that the present invention one is the schematic diagram of the control system of air compression system in embodiment;
Fig. 2 is the load sharing schematic diagram of anti-emptying gain in one embodiment of the invention;
Fig. 3 is the load sharing schematic diagram of intake valve gain in one embodiment of the invention.
Detailed description of the invention
Control system and method below with reference to Fig. 1 to Fig. 3 to air compression system provided by the invention are enteredThe description that row is detailed, it is the present invention's one optional embodiment, can think, those skilled in the art existsDo not change in the scope of the present invention spirit and content and can it be modified and be polished.
The present embodiment provides a kind of control method of air compression system, and described air compression system at least wrapsSome air compressor machines of having drawn together air accumulator and being attached thereto, this control method comprises pressure control procedure:
In the process of air compressing, detect the air pressure in air accumulator;
If detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of default both gradedsLoad some air compressor machines wherein;
If detect that the force value that obtains is greater than goal pressure upper in limited time, according to default contrary when loadingBoth gradeds unload several air compressor machines wherein.
Described some air compressor machines comprise at least one frequency conversion air compressor, according to a kind of default both gradedsWhile loading some air compressor machines wherein, originate in a described frequency conversion air compressor.
Default both gradeds prestore multiple, before the air pressure that detects air accumulator, also comprise and select itThe process of middle a kind of default both gradeds.
This is 1. and concentrates Energy Saving Control pattern, and it has comprised press belt control logic and time sequence control logic.Specifically:
Press belt control logic is adopted with the following method:
Pressure transmitter range is 0-200PSI, requires to be arranged on the female pipe of air accumulator or air upper, is used for monitoringThe variation of system pressure. On the touch-screen of control system, user can set target pressure scope, systemMake within pressure is controlled at the scope of setting. Once detect that system pressure is lower than set target pressure lower limitTime, will automatically load corresponding air compressor machine according to the compressor operation order of setting; System pressure higher thanIn set target pressure, in limited time, control system is by automatically corresponding according to the compressor operation order unloading of settingAir compressor machine, will autostop after the long-time unloading of air compressor machine, to save energy resource consumption.
SECO is adopted with the following method:
User in advance in ACS4000 system for air compressor machine set operation order (maximum 8 operation order,Be numbered A-H), ACS4000 control system will be moved according to predetermined order switching conditionThe switching of order, without operating personnel's intervention. For example, order A is 1-2-3-4; Order B is 2-3-4-1 ... ..When system pressure lower than under set target pressure in limited time, if when front sequence be A, system will be according to 1,2,3,4, order load successively corresponding air compressor machine; When system pressure is during higher than capping, by by contrary timeOrder 4,3,2,1 unload or stop corresponding air compressor machine, thus the pressure of system will be controlled at the scope of settingWithin. If order is B, system will be according to 2,3, and 4,1 order loads to press with by contraryOrder unloading air compressor machine. Order is switched (be equivalent to active and standby machine fall machine) and is entered in the time that arrive in the switching time of settingRow automatically switches, or people is for intervening force handoff. When ACS4000 controls Ingersoll-rand NirvanaWhen unit, Nirvana (for example 4# machine) should be placed on to the initiating terminal of operation order, at whole air compressor machineIn system, Nirvana air compressor machine is born the adjusting work of system pressure always as main force's air compressor machine. For example,Can setting order A:4-1-2-3, order B:4-2-3-1, order C:4-3-1-2 ... ... If control manyNirvana air compressor machine, arranges Nirvana unit according to principle from left to right. Nirvana air compressor machine isDescribed frequency conversion air compressor before.
Further, in the time loading some air compressor machines wherein according to a kind of default both gradeds, load oneAfter platform air compressor machine, under also judging whether to carry out according to the pressure rise trend detecting and default decision logicThe loading of an air compressor machine.
This is energy control pattern, specifically, in the present embodiment, uses gas scene for part, has adoptedPressure trend mode, that has reduced part machine frequently adds unloading, realizes energy control mode. AdoptFollowing method: iControl system detects pressure oscillation, after the low pressure limit of setting, machine can be according toPredefined compressor operation order (maximum 8 operation order, are numbered A-H), system is by rootCarry out the switching of operation order according to predetermined order switching condition. when system pressure is pressed lower than target settingUnder power in limited time, if when front sequence be A, system will be according to 1,2,3,4, order load successively corresponding skyPress; But in part system is switched, there will be system pressure fluctuation, pressure is lower than lower limit, but standby theA machine is opened, but pressure appoints so lower than system pressure, and system can be according to the pressure rise detectingTrend judges, whether need open standby second machine, thereby guaranteed system pressure if carrying out apprizing systemFluctuation in scope, although system pressure lower than setting pressure, and not can according to set loading time delay timeBetween open immediately machine, thereby realized the energy-conservation of system. Also guaranteed that client's press belt is at good modelWithin enclosing.
Here alleged " ascendant trend " can be according to the pressure parameter of curve, air compressor machine over timeJudge by default decision logic etc. data, in the situation that knowing its effect, should be able to provideThe technical scheme of body, so the present embodiment does not do further and enumerates.
Further, described some air compressor machines comprise some centrifugal air compressors, please refer to Fig. 2, this controlling partyMethod also comprises anti-emptying load sharing process:
Obtain the open degree situation of intake valve, by-passing valve and the atmospheric valve of centrifugal air compressor;
Divide equally gain to the described centrifugal air compressor in emptying just according to the open degree situation timed sending that obtains,Make the open degree of intake valve of centrifugal air compressor wherein convergent, the by-passing valve of centrifugal air compressor whereinOpen degree is also convergent, and intake valve and by-passing valve overall open degree separately meet pneumatics demand. Further,Timed sending is divided equally gain to just after the described centrifugal air compressor of emptying, new if centrifugal air compressor is not receivedYield value, original yield value lost efficacy the delay time warp default later.
Specifically, system sends to all load operatings every setting-up time anti-emptying load sharing gainCentrifugal air compressor. If (do not receive new gain, this value will lose efficacy after delay time arrives) this refers toOrder will be the centrifugal air compressor that directly affects emptying (minimum load). The inside of these centrifugal air compressors (noVisible) pressure set points rising. This just makes emptying reduce, and system pressure increases. And then make at full capacityOr the compressor that regulating output is reduced to (to the output of intake valve)
Be below the benefit of anti-emptying load sharing:
1, reduce or eliminate bypath air amount;
2, will eliminate that one or more compressor is operated at full capacity and other compressor with the feelings of minimum load workCondition; Realization does not have fully loaded compressor
3, there is no the compressor of 100% emptying
4, all control systems dynamically of all compressors
5, reduced the general power of given air requirements
6, reduced total emptying amount
Described some air compressor machines comprise some centrifugal air compressors, please refer to Fig. 3, this control method also comprise intoAir valve load sharing process:
Obtain the open degree situation of intake valve, by-passing valve and the atmospheric valve of centrifugal air compressor;
When all centrifugal air compressors are all when the state at full capacity, loading or regulating, timing toIntake valve valve opening degree does not send and divides equally gain to 100% centrifugal air compressor, increases its open degree.
Specifically, when all operation centrifugal air compressors are at full capacity or while loading, it is negative that system sends intake valveCarry and divide equally gain. Send once every setting-up time. Gain only affect intake valve do not reach 100% centrifugalAir compressor machine. These centrifugal air compressors are driven large intake valve according to gain size, and this just makes load or regulatingIn compressor increase output by opening intake valve, and make fully loaded compressor reduce the aperture of intake valve.Thereby system pressure is increased temporarily.
Be below the benefit of intake valve gain load sharing:
1, there is no compressor is at full capacity;
2, the general power of given demand reduces, and for example, is originally that 170% is 159% after dividing equally;
3, compressor meet share aspect air requirements more even.
Please refer to Fig. 1, the present embodiment also provides a kind of control system of air compression system, at least comprises skyPress station, pressure transmitter and control module, in described air compression station, be provided with air accumulator and be attached thereto someAir compressor machine, described pressure transmitter is installed in described air accumulator or its air mother manages above, described control moduleBe connected with described air compressor machine and pressure transmitter respectively;
Wherein, described pressure transmitter is mainly in order to detect the air pressure in air accumulator. Described control moduleIts Main Function is exactly to realize by programming and concrete parameter setting the air compressing side that the present embodiment providesOther concrete steps of method.
So described control module is at least in order to according to the parameter of setting and the force value control that obtains of detectionDescribed air compressor machine, if detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of defaultBoth graded loaded some air compressor machines wherein; If detect the upper limit that the force value obtaining is greater than goal pressureTime, unload several air compressor machines wherein according to default both gradeds contrary when loading. Both presetGraded prestores multiple, and described control module is also in order to respond input operation, selected wherein a kind of defaultBoth graded. In the time loading some air compressor machines wherein according to a kind of default both gradeds, load a skyAfter press, described control module is also sentenced in order to the pressure rise trend according to detecting and default decision logicBreak and whether carry out the loading of next air compressor machine. Described some air compressor machines comprise at least one frequency conversion air compressor,In the time loading some air compressor machines wherein according to a kind of default both gradeds, described control module is in order to controlIt originates in a described frequency conversion air compressor.
The control system of the air compression system that the present embodiment provides also comprises center, high in the clouds, router and monitoringCenter, described control module is by air compressor machine described in the control of some PLC equipment, described Surveillance center and controlUnit is interconnected by described router, and described PLC equipment and pressure transmission device are by described control module and instituteState between router and realize transfer of data, described router is connected in internet, so by internet with described inCenter, high in the clouds connects. Described router is desktop type technical grade wireless router IR601, described Surveillance center withControl module is connected in an IPSECVPN network jointly by described router, and described Surveillance center joinsPut a fixing public network IP. Wherein:
Center, described high in the clouds, comprises background data base, the issuing service of Web network and server hardware.The data of on-site data gathering transmitting element collection send to this unit by 3G network or internet network.Monitoring central server receives and stores the device data that on-site data gathering transmitting element sends, simultaneouslyComplete the function that internet is issued, allow user to check machine by internet network while access services deviceService data and historical data, alert event and form.
Described control module, also can regard as in order to by the parameter of default, realizes the long-range start and stop of machineControl, add the control strategies such as unloading, order, time simultaneously, reach the energy-conservation sky of maximum of whole pneumatics stationBetween control. Connect the LAN mouth of 3G router and pass through its networking by ethernet line simultaneously! Each existingThe 3G router of field ensures intercommunication by setting up IPSECVPN with the server of Surveillance center, by setting upIPSECVPN, data on-the-spot and center communication are all encrypted, ensured the peace in data transmission procedureEntirely.
Described Surveillance center: under production environment, Surveillance center will possess a fixing public network IP; BecauseWhen on-the-spot and center coupling is set up IPSECVPN, mechanism is that 3G router is wanted active probe center public network IP,Because the IP address of 3G router is dynamic change, so will possess a fixing public network IP by centeringMake scene can find the equipment at center; When IPSECVPN is successfully established, Surveillance center's computer just can be visitedAsk the PLC equipment that each is on-the-spot, to realize the acquisition function of remote maintenance PLC function, data.
This control system can also comprise:
Mobile client: consider that may occur that engineer travels outside also needs to connect the on-the-spot PLC's of far-endSituation, engineer's online computing mode may be to network in the mode of hotel Internet access or USB3G card of surfing Internet,Can not as Surveillance center, the mode by IPSecVPN access, thus on engineer's computer and monitoringThe PPTP function that center carries by windows realizes each on-the-spot PLC of remote access.
Centralized management system: curstomer's site exceedes 2 above machines, can be according to the need of curstomer's site use gasAsk, client can on-the-spot different machines, different pressures grade, and the switch between master and slave machines of different order etc., simultaneouslyThe corollary equipment of managing customer air compression station, realizes centralized management and controls function.
The present embodiment has been realized teledata protection by arranging above: traditional control system, and existing for clientAfter the debugging of field, change or program existing problems if producing appears in client, all need engineer or serviceEngineer's program of modifying at scene, the present embodiment can adopt remotely modifying mode, remote online program dimensionProtect and parameter adjustment: the network by wire/wireless is connected, authorized PowerUser can long-rangely repairChange/upload program code, logic and parameter, and in this process, system should keep normal operation. ThisThe desktop type technical grade that inferior employing IR601 series integrates conventional router function and 3G network advantage is wirelessRouter. Product adopts technical grade chip design, and preset 3G communication module accesses at a high speed global 3G and 2.5GNetwork, supports the conventional agreements such as PPP, NAT, RIP, GRE, VRRP. IR601 series wireless routingDevice meets industrial user's demand, low in energy consumption, and operating temperature can reach-20 DEG C-60 DEG C, and size is little, lightweight,Being convenient to be applied in harsh, narrow and small industrial environment, is the ideal chose of commercial Application. Product has simultaneouslyVPN function (IPSec/PPTP/L2TP/GREVPN) is that application data passes in the ipsec tunnel of safetyDefeated, prevent that data are stolen and distort, for network application provides higher security, be commercial ApplicationFirst-selected. In addition, IR601 series of products are supported DeviceManager remote device management platform, can realizeThe operated from a distances such as Long-distance Control, remote supervisory, parameter configuration, firmware upgrade, log management.
Number is also realized by being installed between web software on terminal device and terminal device in center, described high in the cloudsAccording to transmission transfer, described web software is at least in order to realize following one of at least function:
Judge whether to need to report to the police according to the data that receive from center, described high in the clouds, if desired report to the police, push awayThe alarming information of delivering newspaper;
Response user's operation, transfers system running state and parameter on described cloud server, thereby entersRow shows;
According to the Automatic generation of information of the data that receive from Cloud Server, the data that prestore and other people inputWith storage form;
Response user's operation, shows data in a different manner.
Specifically, Web software can be realized following functions:
1, detect warning function
A, function
● automatic failure alarm, sends note and mail to client
System data can, according to automatic logic decision event type, be wanted according to event severity level and managementAsk, note and the mail of implementing curstomer-oriented and the different managerial classes of IR send. Every user is no more than 50Receive user.
● active inquiry machine, system running state and parameter
When client receives fault note or has the demand of initiatively understanding machine information, can be by PC netThe operation ginseng of network browser, smart mobile phone or iPad web browser inquiry air compressor machine and compressed air systemNumber, the service engineering of being convenient to client and IR is served as master and is first understood air compressor machine situation, prepare fault exclusion program andInstrument.
● query function is simultaneously also for customer equipment attendant and assets manager provide a kind of clear, firstThe equipment control mode of entering, improves asset management level.
B, user interface
● software, based on browser, does not rely on special-purpose software, does not need more like this in various operating systemChange client;
● air system and separate unit air compressor machine key performance data can be checked in interface
● can search air compressor machine and play/stop record, load/unload record
● can search warning, failure logging.
2, report capability
● automatically for client generates and sends simple and easy form
● be only software tables of data that derive or simple computation automatically, client itself also can be from machineArriving, is only to read more expediently by form, free or sale at a low price;
● data accounting report need to use specialty to calculate and analyze the energy-conservation or machine work report providing again;
● statistical forms
● in conjunction with client place industry, rival, the whole nation or regional compressed air system information, IR statisticsAnalyze and give the form of professional advice, as long as make by hand derived data and be processed into form;
3, the function of telemonitoring
A, tendency chart show:
● can freely select to need the data of demonstration;
● the time span of demonstration can be set;
● the data point that demonstration receives recently can be set and count;
● can show the maximum of data point in tendency chart, minimum of a value, mean value;
● show the alert event of this data point;
B, datagraphic show:
● can be self-defined need the background picture that shows;
● data are movable to the optional position in picture;
● data can graphically show;
4, administrative center's function
● for chief executive provides decision support;
● for administrative staff provide systematic service management: energy-saving potential and fault rate analysis, screening statisticsAnalyze;
● general headquarters, regional center, subregion, client, different groups can see not customer status on the same group andData;
● overall equipment control: 7*24 hour self-online management is provided, running status and trend analysis,
Managerial report output.
5, analytic function:
● system provides the function of linking point
● linking point can be that difference complicated calculations obtains, and the data that can come for collection in worksite are carried out dataAnalyze
● back-end data can be exported to csv file, for other energy-conservation software analysis.
But, for different users, the restriction of having any different again of its function. For client or producer's generationTable, can realize mail and the note of remote browse about key equipment key message, carry out remote diagnosis andService. For mobile device, can remote browse about mail and the note of equipment key message, for skyThe service centre of pressing system, mail and note that can remote browse equipment key message, carry out remote diagnosisAnd service, long-range program upgrade and maintenance.
In addition, in the present embodiment, the analysis of air compressor machine machine service data is also had to distinctive feature:
Traditional compressor operating data analysis is based on data acquisition and analysis, because collection period is shorter,In data analysis, easily there is deviation. The present embodiment can continuous acquisition compressor operating data, and according to feelingsCondition is analyzed accordingly, and the analytical cycle relating to can define arbitrarily, analyzes the conclusion drawing more accurate.
Form uses equipment evaluation for IR expert, belongs to Introduced cases form. manually fill in evaluator, expertComment. select assessment unit, evaluation time and assessment apparatus. certain section of running status state for equipment becomesGesture and statement analysis, determine by initial time in interface and time span. after all ends of input, clickACK button, preserves report data.
Hardware device about concrete:
In the present embodiment, PLC has adopted the MODICON series of products of Schneider; 258 these PLC are built-in1 USB, 1 Ethernet interface, 2 modbus communication ports; 258 these PLC have ultrafast computing speedDegree: 22ns/ boolean instruction;=vast capacity internal memory: 64MRAM;
Technical grade wireless router product adopts technical grade chip design, and preset 3G communication module at a high speed access is completeBall 3G and 2.5G network, support the conventional agreements such as PPP, NAT, RIP, GRE, VRRP. Be applicable to various worksIndustry scene; Wireless router has VPN function (IPSec/PPTP/L2TP/GREVPN) simultaneously, is applicationData are transmitted in the ipsec tunnel of safety, have prevented that data are stolen and distort, for network application providesHigher security is the first-selection of commercial Application; It has 24 road isolated form digital quantity inputs, 18 tunnel isolationType digital output, 4 road isolated form 4～20mA analog inputs and a road isolated form RJ45 Ethernet connectMouthful; The access of each analog quantity need to be passed through isolated gate, guarantees signal stabilization; Isolated form RJ45 Ethernet connectsMouthful applicable high speed data transfer and INTERNET passage is provided; Every road RS485 adopts 3 terminals, convenient usingFamily shielding line ground connection, to improve antijamming capability, is changed by gateway, and the communication data of machine is converted to heightSpeed Ethernet. Realizing data transmits in time; The input of all digital quantities, output, all use independently everyFrom power supply to improve anti-interference and data acquisition stability.
The different air compressor machine types of different manufacturers communicate, and realize centralized Control, gather desired data simultaneously(relevant information such as communication protocol, address table need to be provided); Realize the centralized Control of cooling driers, dryer,Collecting work state simultaneously; Can by configuring relevant host computer hardware, software, to realize machine this locality long-rangeMonitor; The data that collect can be transferred to INTERNET by 3G or GPRS; Do not pass by factory broadbandTransmission of data, does not have the place of 3G signal to adopt GPRS transmission data; The present embodiment has on self diagnosis and worksRoad function; The present embodiment can be configured module by network interface (RJ45); The present embodiment has, when GPRS/CDMA network breaks down, can there is the stage to fault in data buffer storage and self-recovering functionData are carried out buffer memory, while waiting fault recovery, can resume data cached. The present embodiment can be for sceneDifferent controllers carries out data acquisition, does not need to do too many capture program and changes.
About concrete performance setting, in the present embodiment:
The on-the-spot facility planning that can control is at most 32 air compressor machines (communication and hardwire are all considered)+64Platform cooling driers; Realize 8 order simultaneously and set, in system, set and move order (for air compressor machine in advanceMany 8 operation order, are numbered A-H), control system will be entered according to predetermined order switching conditionThe switching of row operation order, without operating personnel's intervention. Order is switched (be equivalent to active and standby machine fall machine) and is existedAutomatically switch while arrival the switching time of setting, or people is for intervening force handoff. When controlling EnglishWhen Ge Suolan Nirvana unit, Nirvana (for example 4# machine) should be placed on to the initiating terminal of operation order,In whole air compressor system, Nirvana air compressor machine is born the tune of system pressure always as main force's air compressor machineJoint work. Control system power down does not affect the running status of air compressor machine, and all air compressor machines will keep currentState, get back to local control simultaneously. The existing communication port of air compressor machine is used, and can be torn openUnder receive the module of later development, realize the data acquisition and control of machine. For the pneumatics that there is no controllerMachine, then the air compressor machine that need to be transform as tape controller just can connect data acquisition sending module.
The control method of the air compression system that in sum, the present embodiment provides and system have following outstandingImprovement:
● realize the energy control pattern of machine;
● realize machine order control mode;
● the long-range compressed air system real time execution parameter of checking;
● the abnormal electronic reminding of crucial compressed air operational factor;
● compressed air system fault Realtime Alerts;
● compressed air system operational parameter data wireless transmission;
● the data of remote collection are checked and managed to web mode.
Claims (13)
1. a control method for air compression system, described air compression system at least comprised air accumulator and withSome air compressor machines of connection, this control method comprises pressure control procedure:
In the process of air compressing, detect the air pressure in air accumulator;
If detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of default both gradedsLoad some air compressor machines wherein;
If detect that the force value that obtains is greater than goal pressure upper in limited time, according to default contrary when loadingBoth gradeds unload several air compressor machines wherein;
Described some air compressor machines comprise some centrifugal air compressors, and this control method also comprises that anti-emptying load is equalDivide process:
Obtain the open degree situation of intake valve, by-passing valve and the atmospheric valve of centrifugal air compressor;
Divide equally gain to the described centrifugal air compressor in emptying just according to the open degree situation timed sending that obtains,Make the open degree of intake valve of centrifugal air compressor wherein convergent, the by-passing valve of centrifugal air compressor whereinOpen degree is also convergent, and intake valve and by-passing valve overall open degree separately meet pneumatics demand.
2. the control method of air compression system as claimed in claim 1, is characterized in that: described some pneumaticsMachine comprises at least one frequency conversion air compressor, is loading some skies wherein according to a kind of default both gradedsWhen press, originate in a described frequency conversion air compressor.
3. the control method of air compression system as claimed in claim 1, is characterized in that: default is set inferiorOrder prestores multiple, also comprises selected wherein a kind of default set before detecting the air pressure of air accumulatorThe process of order.
4. the control method of air compression system as claimed in claim 1, is characterized in that: pre-according to oneIf both gradeds while loading some air compressor machines wherein, load after an air compressor machine, also according to detectingPressure rise trend and default decision logic judge whether to carry out the loading of next air compressor machine.
5. the control method of air compression system as claimed in claim 1, is characterized in that: timed sending is divided equallyGain is to just after the described centrifugal air compressor of emptying, if centrifugal air compressor is not received new yield value, formerFirst yield value lost efficacy the delay time warp default later.
6. the control method of air compression system as claimed in claim 1, is characterized in that: described some pneumaticsMachine comprises some centrifugal air compressors, and this control method also comprises intake valve load sharing process:
Obtain the open degree situation of intake valve, by-passing valve and the atmospheric valve of centrifugal air compressor;
When all centrifugal air compressors are all when the state at full capacity, loading or regulating, timing toIntake valve valve opening degree does not send and divides equally gain to 100% centrifugal air compressor, increases its open degree.
7. a control system for air compression system, is characterized in that: at least comprise air compression station, pressure transmitterAnd control module, the some air compressor machines that are provided with air accumulator in described air compression station and are attached thereto, described pressureTransmitter be installed in described air accumulator or the female pipe of its air upper, described control module respectively with described air compressor machineBe connected with pressure transmitter;
Described pressure transmitter, in order in the process of air compressing, detects the air pressure in air accumulator;
Described control module is at least in order to according to empty described in the parameter of setting and the force value control that obtains of detectionPress, if detect the lower limit that the force value that obtains is less than goal pressure, according to a kind of default set timeOrder loads some air compressor machines wherein; Prescribe a time limit if the force value that detection obtains is greater than the upper of goal pressure, pressUnload several air compressor machines wherein according to default both gradeds contrary when loading;
Described some air compressor machines comprise some centrifugal air compressors, and the some described centrifugal air compressor of emptying is also usedDivide equally gain with response, make the open degree of intake valve of some described centrifugal air compressors of each emptying convergent,The open degree of by-passing valve is also convergent, and intake valve and by-passing valve overall open degree separately meet pneumatics demand.
8. the control system of air compression system as claimed in claim 7, is characterized in that: default is set inferiorOrder prestores multiple, and described control module is also in order to respond input operation, selected wherein a kind of default setOrder.
9. the control system of air compression system as claimed in claim 7, is characterized in that: pre-according to oneIf both gradeds while loading some air compressor machines wherein, load after an air compressor machine, described control module alsoIn order to judge whether to carry out next air compressor machine according to the pressure rise trend and the default decision logic that detectLoading.
10. the control system of air compression system as claimed in claim 7, is characterized in that: described some skiesPress comprises at least one frequency conversion air compressor, is loading wherein some according to a kind of default both gradedsWhen air compressor machine, described control module originates in a described frequency conversion air compressor in order to control it.
The control system of 11. air compression systems as claimed in claim 7, is characterized in that: also comprise high in the cloudsCenter, router and Surveillance center, described control module is by air compressor machine described in the control of some PLC equipment,Described Surveillance center and control module are interconnected by described router, and described PLC equipment and pressure transmitter are logicalCross between described control module and described router and realize transfer of data, described router is connected in internet, entersAnd be connected with center, described high in the clouds by internet.
The control system of 12. air compression systems as claimed in claim 11, is characterized in that: described routeDevice is desktop type technical grade wireless router IR601, and described Surveillance center and control module are by described routeDevice is connected in an IPSECVPN network jointly, and a fixing public network IP of described Surveillance center configuration.
The control system of 13. air compression systems as claimed in claim 11, is characterized in that: described high in the cloudsCenter is also realized the transmission of data and is adjusted between web software on terminal device and terminal device by being installed onGet, described web software is at least in order to realize following one of at least function:
Judge whether to need to report to the police according to the data that receive from center, described high in the clouds, if desired report to the police, push awayThe alarming information of delivering newspaper;
Response user's operation, transfers system running state and parameter on described cloud server, thereby entersRow shows;
Automatically raw according to the information of the data that receive from cloud server, the data that prestore and other people inputBecome and storage form;
Response user's operation, shows data in a different manner.
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| CN106843305A (en) * | 2017-01-24 | 2017-06-13 | 深圳企管加企业服务有限公司 | Gas chamber Internet of Things monitoring method and system |
| CN107701410A (en) * | 2017-08-14 | 2018-02-16 | 苏州创时云能源科技有限公司 | A kind of multiple air compressors central control system |
| CN111088427B (en) * | 2018-10-23 | 2021-08-17 | 江西华赣瑞林稀贵金属科技有限公司 | Fan control system and control method based on electronic waste and complex copper-based solid waste |
| CN110107525B (en) * | 2018-12-10 | 2020-05-05 | 杭州能源投资管理有限公司 | Control method for system pressure of centrifugal air compression station |
| CN112302919B (en) * | 2020-10-29 | 2022-09-27 | 新奥数能科技有限公司 | Cloud computing-based optimization control method and system for multiple air compressors |
| CN112459998A (en) * | 2020-11-24 | 2021-03-09 | 爱景智能装备(无锡)有限公司 | Method for rapidly judging starting and stopping priority in multiple air compressors |
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