CN104179707A - Controlling method and system for air compression system - Google Patents
Controlling method and system for air compression system Download PDFInfo
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- CN104179707A CN104179707A CN201410387751.3A CN201410387751A CN104179707A CN 104179707 A CN104179707 A CN 104179707A CN 201410387751 A CN201410387751 A CN 201410387751A CN 104179707 A CN104179707 A CN 104179707A
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Abstract
The invention provides a controlling method and system for an air compression system. The air compression system at least comprises an air storing pot and a plurality of air compressors connected with the air storing pot. The controlling method comprises a pressure controlling process: in the air compressing process, the air pressure of the air storing pot is detected; if the detected pressure value is smaller than the lower limiting value of a target pressure, the air compressors are loaded according to a preset established sequence; if the detected pressure value is greater than the upper limiting value of the target pressure, the air compressors are unloaded according to a preset established sequence contrary to the sequence according to which the air compressors are loaded. According to the invention, the energy conservation control of the air compressing system is realized.
Description
Technical field
The present invention relates to a kind of improvement to air compression system, relate in particular to a kind of controlling method and system of air compression system.
Background technique
Air compression system of the prior art mainly comprises air compressor, gas holder, dryer, filter, gas pipeline and some valves, wherein, compressed-air actuated output, air is through the suction port collection of air compressor, after the head compression of air compressor, from the air outlet of air compressor, spray and enter gas holder.Due to air outlet after the air of suction port collection and work done, eject pressurized air and have temperature difference, must separate out most condensed water simultaneously containing a small amount of oil and impurity, sedimentation is discharged by dirty mouthful.
In the compressed air system of a lot of curstomer's sites, because client is for being unfamiliar with of system, cause client to have the operation of a lot of machines or arrange all having 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 controlling method of air compression system, described air compression system has at least comprised gas holder and the some air compressors that are attached thereto, this controlling method comprises pressure control procedure:
In the process of air compressing, detect the air pressure in gas holder;
If detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of default both gradeds, load some air compressors wherein;
If detect that the force value obtain is greater than goal pressure upper in limited time, according to default both gradeds unloading contrary when loading several air compressors wherein;
Described some air compressors comprise at least one frequency conversion air compressor, when loading some air compressors wherein according to a kind of default both gradeds, originate in a described frequency conversion air compressor.
Default both gradeds prestore multiple, also comprise selected wherein a kind of process of default both gradeds before the air pressure that detects gas holder.
When loading some air compressors wherein according to a kind of default both gradeds, load after an air compressor, also according to the pressure rise trend and the default decision logic that detect, judge whether to carry out the loading of next air compressor.
Described some air compressors comprise some centrifugal air compressors, and this controlling method also comprises anti-emptying load sharing process:
Obtain the open degree situation of suction valve, bypass valve and the atmospheric valve of centrifugal air compressor;
According to the open degree situation timed sending that obtains, divide equally gain to just at the described centrifugal air compressor of emptying, make the open degree of suction valve of centrifugal air compressor wherein convergent, the open degree of the bypass valve of centrifugal air compressor is wherein also convergent, and suction valve and bypass 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 received new yield value, original yield value by the delay time default through losing efficacy later.
Described some air compressors comprise some centrifugal air compressors, and this controlling method also comprises suction valve load sharing process:
Obtain the open degree situation of suction valve, bypass valve and the atmospheric valve of centrifugal air compressor;
When all centrifugal air compressors are all during the state at full capacity, loading or regulating, regularly to suction valve valve opening degree, to 100% centrifugal air compressor, do not send and do not divide equally gain, increase its open degree.
The present invention also provides a kind of control system of air compression system, at least comprise air compressor plant, pressure transmitter and control unit, the some air compressors that are provided with gas holder in described air compressor plant and are attached thereto, described pressure transmitter is installed in described gas holder or its air mother manages above, and described control unit is connected with pressure transmitter with described air compressor respectively;
Described pressure transmitter, in order in the process of air compressing, detects the air pressure in gas holder;
Described control unit is at least controlled described air compressor in order to the force value obtaining according to the parameter of setting and detection, if detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of default both gradeds, loads some air compressors wherein; If detect that the force value obtain is greater than goal pressure upper in limited time, according to default both gradeds unloading contrary when loading several air compressors wherein.
Default both gradeds prestore multiple, and described control unit, also in order to respond input operation, is selected wherein a kind of default both gradeds.
When loading some air compressors wherein according to a kind of default both gradeds, load after an air compressor, described control unit also judges whether to carry out the loading of next air compressor in order to pressure rise trend and default decision logic according to detecting.
Described some air compressors comprise at least one frequency conversion air compressor, and when loading some air compressors wherein according to a kind of default both gradeds, described control unit originates in a described frequency conversion air compressor in order to control it.
The control system of described air compression system also comprises center, high in the clouds, router and Surveillance center, described control unit is controlled described air compressor by some PLC equipment, described Surveillance center and control unit are interconnected by described router, described PLC equipment and pressure transmission device are by realizing data transmission between described control unit and described router, described router is connected in internet, and then is connected with center, described high in the clouds by internet.
Described router is table-type technical grade wireless router IR601, and described Surveillance center and control unit are connected in an IPSEC VPN network jointly by described router, and a fixing public network IP of described Surveillance center configuration.
Center, described high in the clouds is also realized the transmission of data and is transferred between web software on terminal equipment and terminal equipment by being installed on, described web software is at least in order to realize following one of at least function:
According to the data that receive from center, described high in the clouds, judge whether to need to report to the police, if desired report to the police, push warning message;
Response user's operation, transfers system running state and parameter on described cloud server, thereby shows;
According to the Automatic generation of information of the data that receive from Cloud Server, the data that prestore and other people input and storage form;
Response user's operation, shows data in a different manner.
The present invention is used in combination by pressure transmitter and control unit, pressure detected lower than prescribing a time limit under set target pressure, will automatically according to the compressor operation order of setting, load corresponding air compressor; System pressure higher than set target pressure in limited time, will automatically according to the compressor operation order of setting, unload corresponding air compressor, will autostop after the long-time unloading of air compressor, to save energy consumption.Visible, the present invention has realized the energy-conservation of air compression system.
Accompanying drawing explanation
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 suction valve gain in one embodiment of the invention.
Embodiment
Below with reference to Fig. 1 to Fig. 3, the control system of air compression system provided by the invention and method are described in detail, it is the present invention's one optional embodiment, can think, those skilled in the art can modify and polish it in the scope that does not change the present invention's spirit and content.
The present embodiment provides a kind of controlling method of air compression system, and described air compression system has at least comprised gas holder and the some air compressors that are attached thereto, and this controlling method comprises pressure control procedure:
In the process of air compressing, detect the air pressure in gas holder;
If detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of default both gradeds, load some air compressors wherein;
If detect that the force value obtain is greater than goal pressure upper in limited time, according to default both gradeds unloading contrary when loading several air compressors wherein.
Described some air compressors comprise at least one frequency conversion air compressor, when loading some air compressors wherein according to a kind of default both gradeds, originate in a described frequency conversion air compressor.
Default both gradeds prestore multiple, also comprise selected wherein a kind of process of default both gradeds before the air pressure that detects gas holder.
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 gas holder or air upper, is used for the variation of monitoring system pressure.On the touch screen of control system, user can set target pressure scope, and system makes within pressure is controlled at the scope of setting.Once system pressure be detected lower than prescribing a time limit under set target pressure, will automatically load corresponding air compressor according to the compressor operation order of setting; System pressure higher than set target pressure in limited time, control system will unload corresponding air compressor according to the compressor operation order of setting automatically, will autostop after the long-time unloading of air compressor, to save energy consumption.
Time-oriented sequential control is adopted with the following method:
In ACS4000 system, for air compressor is set operation order, (maximum 8 are moved order to user in advance, be numbered A-H), ACS4000 control system is by carry out the switching of operation order according to predetermined order switching condition, without operator'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; When system pressure is during higher than capping, will or stop corresponding air compressor by 4,3,2,1 unloadings of contrary order, thereby the pressure of system is by within being controlled at the scope of setting.If order is B, system will be according to 2,3, and 4,1 order loads to press with by contrary order unloading air compressor.Order is switched (be equivalent to active and standby machine fall machine) and is automatically switched when arrive in the switching time of setting, or people is for intervening force handoff.When ACS4000 controls Ingersoll-rand Nirvana unit, Nirvana (for example 4# machine) should be placed on to the starting point of operation order,, in whole air compressor system, Nirvana air compressor is born the adjusting work of system pressure always as main force's air compressor.For example, can setting order A:4-1-2-3, order B:4-2-3-1, order C:4-3-1-2 ... ...If control many Nirvana air compressors, according to principle from left to right, arrange Nirvana unit.Nirvana air compressor is described before frequency conversion air compressor.
Further, when loading some air compressors wherein according to a kind of default both gradeds, load after an air compressor, also according to the pressure rise trend and the default decision logic that detect, judge whether to carry out the loading of next air compressor.
This is energy control pattern, specifically, on-the-spot for part use gas in the present embodiment, has adopted pressure trend mode, and that has reduced part machine frequently adds unloading, realizes energy control mode.Adopt with the following method: iControl system detects pressure surge, after the low pressure limit of setting, machine can be according to predefined compressor operation order (maximum 8 operation order, be numbered A-H), and system will be carried out according to predetermined order switching condition the switching of operation order. when system pressure is lower than prescribing a time limit under set target pressure, if when front sequence is A, system will be according to 1,2, and 3,4, order load successively corresponding air compressor; But in part system is switched, there will be system pressure fluctuation, pressure is lower than lower limit, but standby First machine opens, but pressure is appointed so lower than system pressure, system can judge according to the pressure rise trend detecting, come apprizing system whether to need to open second machine of standby, thereby guaranteed that system pressure fluctuation is in scope, although system pressure is lower than setting pressure, and can not open immediately machine according to the loading delay time of setting, thereby realized the energy-conservation of system.Also guaranteed that client's press belt is within good scope.
Here alleged " ascendant trend " can according to pressure over time the data such as parameter of curve, air compressor by default decision logic, judge, in the situation that knowing its effect, should be able to draw concrete technological scheme, so the present embodiment is not done further and enumerated.
Further, described some air compressors comprise some centrifugal air compressors, please refer to Fig. 2, and this controlling method also comprises anti-emptying load sharing process:
Obtain the open degree situation of suction valve, bypass valve and the atmospheric valve of centrifugal air compressor;
According to the open degree situation timed sending that obtains, divide equally gain to just at the described centrifugal air compressor of emptying, make the open degree of suction valve of centrifugal air compressor wherein convergent, the open degree of the bypass valve of centrifugal air compressor is wherein also convergent, and suction valve and bypass 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, if centrifugal air compressor is not received new yield value, original yield value by the delay time default through losing efficacy later.
Specifically, system sends to anti-emptying load sharing gain every set time the centrifugal air compressor of all load operatings.If (do not receive new gain, this value will lose efficacy after delay time arrives) this instruction will be directly to affect the centrifugal air compressor of emptying (minimum load).The inside of these centrifugal air compressors (invisible) pressure set points raises.This just makes emptying reduce, and system pressure increases.And then make fully loaded or the compressor that regulating reduces output (to the output of suction 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 situation of minimum load work; Realization does not have fully loaded compressor
3, the compressor that there is no 100% emptying
4, all compressors control system dynamically all
5, reduced the total output of given air requirements
6, reduced total emptying amount
Described some air compressors comprise some centrifugal air compressors, please refer to Fig. 3, and this controlling method also comprises suction valve load sharing process:
Obtain the open degree situation of suction valve, bypass valve and the atmospheric valve of centrifugal air compressor;
When all centrifugal air compressors are all during the state at full capacity, loading or regulating, regularly to suction valve valve opening degree, to 100% centrifugal air compressor, do not send and do not divide equally gain, increase its open degree.
Specifically, when all operation centrifugal air compressors are at full capacity or while loading, system sends suction valve load sharing gain.Every set time, send once.Gain only affects suction valve and does not reach 100% centrifugal air compressor.These centrifugal air compressors are driven large suction valve according to gain size, and this just makes the compressor that loads or regulating increase output by opening suction valve, and makes fully loaded compressor reduce the aperture of suction valve.Thereby system pressure is increased temporarily.
Be below the benefit of suction valve gain load sharing:
1, there is no compressor is at full capacity;
2, the total output 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 comprise air compressor plant, pressure transmitter and control unit, the some air compressors that are provided with gas holder in described air compressor plant and are attached thereto, described pressure transmitter is installed in described gas holder or its air mother manages above, and described control unit is connected with pressure transmitter with described air compressor respectively;
Wherein, described pressure transmitter is mainly in order to detect the air pressure in gas holder.Its Main Function of described control unit is exactly by programming and concrete parameter setting, to realize other concrete steps of the air compression method that the present embodiment provides.
So described control unit is at least controlled described air compressor in order to the force value obtaining according to the parameter of setting and detection, if detect the lower limit that the force value obtaining is less than goal pressure, loads some air compressors wherein according to a kind of default both gradeds; If detect that the force value obtain is greater than goal pressure upper in limited time, according to default both gradeds unloading contrary when loading several air compressors wherein.Default both gradeds prestore multiple, and described control unit, also in order to respond input operation, is selected wherein a kind of default both gradeds.When loading some air compressors wherein according to a kind of default both gradeds, load after an air compressor, described control unit also judges whether to carry out the loading of next air compressor in order to pressure rise trend and default decision logic according to detecting.Described some air compressors comprise at least one frequency conversion air compressor, and when loading some air compressors wherein according to a kind of default both gradeds, described control unit originates in a described frequency conversion air compressor in order to control it.
The control system of the air compression system that the present embodiment provides also comprises center, high in the clouds, router and Surveillance center, described control unit is controlled described air compressor by some PLC equipment, described Surveillance center and control unit are interconnected by described router, described PLC equipment and pressure transmission device are by realizing data transmission between described control unit and described router, described router is connected in internet, and then is connected with center, described high in the clouds by internet.Described router is table-type technical grade wireless router IR601, and described Surveillance center and control unit are connected in an IPSEC VPN network jointly by described router, and a fixing public network IP of described Surveillance center configuration.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, complete the function of internet issue simultaneously, allow user by internet network while access services device, to check service data and historical data, alert event and the form of machine.
Described control unit, also can regard as in order to by the parameter of default, realizes the long-range on off control of machine, adds the control strategies such as unloading, order, time simultaneously, reaches the control of the maximum energy saving space of whole pneumatics station.By ethernet line, connect the LAN mouth of 3G router and pass through its networking simultaneously! Each on-the-spot 3G router guarantees intercommunication by setting up IPSEC VPN with the server of Surveillance center, and by setting up IPSEC VPN, data on-the-spot and center communication are all encrypted, guaranteed the safety in data transmission procedure.
Described Surveillance center: under production environment, Surveillance center will possess a fixing public network IP; Because when on-the-spot and center coupling is set up IPSEC VPN, mechanism is that 3G router is wanted active probe center public network IP, because the IP address of 3G router is dynamic change, thus will centering possess one fixedly public network IP make scene can find the equipment at center; When IPSEC VPN is successfully established, Surveillance center's computer just can be accessed each on-the-spot PLC equipment, to realize the collecting 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 situation of the on-the-spot PLC of far-end, 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, so the PPTP function carrying by windows in engineer's computer Shang He Surveillance center realizes each on-the-spot PLC of remote access.
Centralized management system: curstomer's site surpasses 2 above machines, can be according to the demand of curstomer's site use gas, and client can on-the-spot different machines, different pressures grade, the switch between master and slave machines of different order etc., the corollary equipment of managing customer air compressor plant, realizes centralized management and controls function simultaneously.
The present embodiment has been realized teledata protection by arranging above: traditional control system; after curstomer's site debugging; if producing appears in client, change or program existing problems; all need engineer or the service engineering teacher scene program of modifying; the present embodiment can adopt remotely modifying mode; remote online program maintenance and parameter adjustment: the network by wire/wireless is connected; authorized Power User can remotely modifying/upload program-code, logic and parameter; and in this process, system should keep normal operation.This adopts IR601 series to integrate the table-type technical grade wireless router of conventional router function and 3G network advantage.Product adopts technical grade chip design, and preset 3G communication module accesses at a high speed global 3G and 2.5G network, supports the conventional agreements such as PPP, NAT, RIP, GRE, VRRP.IR601 series wireless router meets industrial user's demand, and low in energy consumption, operating temperature can reach-20 ℃-60 ℃, and size is little, lightweight, is convenient to be applied in harsh, narrow and small industrial environment, is the ideal chose of commercial Application.Product has VPN function (IPSec/PPTP/L2TP/GRE VPN) simultaneously, is that application data is transmitted in the ipsec tunnel of safety, has prevented that data are stolen and distort, and for network application provides higher Security, is the first-selection of commercial Application.In addition, IR601 series product are supported Device Manager remote device management platform, can realize the remote operations such as telecontrol, remote supervisory, parameter configuration, firmware upgrade, log management.
Center, described high in the clouds is also realized the transmission of data and is transferred between web software on terminal equipment and terminal equipment by being installed on, described web software is at least in order to realize following one of at least function:
According to the data that receive from center, described high in the clouds, judge whether to need to report to the police, if desired report to the police, push warning message;
Response user's operation, transfers system running state and parameter on described cloud server, thereby shows;
According to the Automatic generation of information of the data that receive from Cloud Server, the data that prestore and other people input and 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 be according to automatic logic decision event type, and according to event severity level and management expectancy, note and the mail of implementing curstomer-oriented and the different managerial classes of IR send.Every user is no more than 50 and receives user.
● active inquiry machine, system running state and parameter
When client receives fault note or has the demand of initiatively understanding machine information, can pass through the Operational Limits of PC web browser, smart mobile phone or iPad web browser inquiry air compressor and compressed air system, the service engineering of being convenient to client and IR is served as master and is first understood air compressor situation, prepares fault exclusion program and instrument.
● query function simultaneously, also for customer equipment attendant and assets manager provide a kind of clear, advanced equipment control mode, improves asset management level.
B, user interface
● software, based on browser, does not rely on special-purpose software, does not need to change like this client end in various operation system;
● air system and separate unit air compressor key performance data can be checked in interface
● can search air compressor and play/stop record, load/unload record
● can search warning, fault recording.
2, report capability
● automatically for client generates and sends simple and easy form
● be only software data sheet that derive or simple computation automatically, client itself also can see from machine, 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 statistical analysis also gives 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 value of data point in tendency chart, minimum 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 arbitrary 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 rate of fault analysis, screening statistical analysis;
● general headquarters, regional center, subregion, client, different groups can be seen not customer status and data on the same group;
● overall equipment control: 7*24 hour self-online management is provided, running state and trends 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 data analysis
● back-end data can be exported to csv file, for other energy-conservation software analysis.
Yet, for different users, the restriction of having any different again of its function.For client or manufacturer's representative, can realize remote browse about mail and the note of key equipment key message, carry out remote diagnosis and service.For mobile device, can remote browse about mail and the note of equipment key message, for the service centre of air compression system, mail and note that can remote browse equipment key message, carry out remote diagnosis and service, long-range program upgrade and maintenance.
In addition, in the present embodiment, the analysis of air compressor machine service data is also had to distinctive feature:
Traditional compressor operating data analysis is based on data capture and analysis, because collection period is shorter, deviation easily occurs in data analysis.The present embodiment can continuous acquisition compressor operating data, and according to circumstances analyze accordingly, and the analytical cycle relating to can define arbitrarily, analyze the conclusion drawing more accurate.
Form is used equipment evaluation for IR expert, belong to Introduced cases form. manually fill in evaluator, expert's comment. select assessment unit, evaluation time and assessment apparatus. for certain section of running state state trend and the statement analysis of equipment, by initial time in interface and time span, determine. after all ends of input, click ACK button, preserve report data.
Relevant concrete hardware device:
In the present embodiment, PLC has adopted the MODICON series product of Schneider; 258 these PLC are built-in 1 USB, 1 Ethernet interface, 2 modbus communication ports; 258 these PLC have ultrafast arithmetic speed: 22ns/ boolean instruction;=vast capacity internal memory: 64M RAM;
Technical grade wireless router product adopts technical grade chip design, and preset 3G communication module accesses at a high speed global 3G and 2.5G network, supports the conventional agreements such as PPP, NAT, RIP, GRE, VRRP.Be applicable to various industry spot; Wireless router has VPN function (IPSec/PPTP/L2TP/GRE VPN) simultaneously, is that application data is transmitted in the ipsec tunnel of safety, has prevented that data are stolen and distort, and for network application provides higher Security, is the first-selection of commercial Application; It has 24 road isolated form digital quantity inputs, 18 road isolated form digital outputs, 4 road isolated form 4～20mA analog inputs and a road isolated form RJ45 Ethernet interface; The access of each analog amount need to be passed through isolated gate, guarantees signal stabilization; Isolated form RJ45 Ethernet interface is applicable to high speed data transfer and INTERNET passage is provided; Every road RS485 adopts 3 terminals, facilitates user's shielding wire ground connection to improve antijamming capability, by gateway, changes, and the communication data of machine is converted to Fast Ethernet.Realizing data transmits in time; The input of all digital quantities, output, all used independently insulating power supply to improve anti-interference and data capture stability.
The different air compressor types of different manufacturers communicate, and realize centralized control, gather desired data (relevant informations such as communication protocol, address table need to be provided) simultaneously; Realize the centralized control of cooling driers, dryer, simultaneously collecting work state; Can realize the local telemonitoring of machine by configuring relevant upper-position unit hardware, software; The data that collect can be transferred to INTERNET by 3G or GPRS; Not by factory's wideband transmit data, do not have the place of 3G signal to adopt GPRS transmission data; The present embodiment has self diagnosis uplink function; The present embodiment can be configured module by network interface (RJ45); The present embodiment has data buffer storage and self-recovering function, when GPRS/CDMA network breaks down, can exist the data in stage to carry out buffer memory to fault, while waiting fault recovery, can resume data cached.The present embodiment can carry out data capture for the different controller in scene, does not need to do too many capture program and changes.
Relevant concrete performance setting, in the present embodiment:
The on-the-spot Investment plan of plant that can control is at most 32 air compressors (communication and hardwire are all considered)+64 cooling driers; Realize 8 order sets simultaneously, in system, for air compressor is set operation order, (maximum 8 are moved order in advance, be numbered A-H), control system is by carry out the switching of operation order according to predetermined order switching condition, without operator's intervention.Order is switched (be equivalent to active and standby machine fall machine) and is automatically switched when arrive in the switching time of setting, or people is for intervening force handoff.When controlling Ingersoll-rand Nirvana unit, Nirvana (for example 4# machine) should be placed on to the starting point of operation order,, in whole air compressor system, Nirvana air compressor is born the adjusting work of system pressure always as main force's air compressor.Control system power down does not affect the running state of air compressor, and all air compressors will keep current state, gets back to local control simultaneously.The existing communication port of air compressor is used, and can be pulled down the module of receiving later development, realizes the data acquisition and control of machine.For the air compressor that there is no controller, then the air compressor that need to be transform as tape controller just can connect data capture transmitting module.
The controlling method of the air compression system that in sum, the present embodiment provides and system have following outstanding improvement:
● 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 pressurized air Operational Limits;
● 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 (14)
1. a controlling method for air compression system, described air compression system has at least comprised gas holder and the some air compressors that are attached thereto, this controlling method comprises pressure control procedure:
In the process of air compressing, detect the air pressure in gas holder;
If detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of default both gradeds, load some air compressors wherein;
If detect that the force value obtain is greater than goal pressure upper in limited time, according to default both gradeds unloading contrary when loading several air compressors wherein.
2. the controlling method of air compression system as claimed in claim 1, it is characterized in that: described some air compressors comprise at least one frequency conversion air compressor, when loading some air compressors wherein according to a kind of default both gradeds, originate in a described frequency conversion air compressor.
3. the controlling method of air compression system as claimed in claim 1, is characterized in that: default both gradeds prestore multiple, also comprises selected wherein a kind of process of default both gradeds before the air pressure that detects gas holder.
4. the controlling method of air compression system as claimed in claim 1, it is characterized in that: when loading some air compressors wherein according to a kind of default both gradeds, load after an air compressor, also according to the pressure rise trend and the default decision logic that detect, judge whether to carry out the loading of next air compressor.
5. the controlling method of air compression system as claimed in claim 1, is characterized in that: described some air compressors comprise some centrifugal air compressors, and this controlling method also comprises anti-emptying load sharing process:
Obtain the open degree situation of suction valve, bypass valve and the atmospheric valve of centrifugal air compressor;
According to the open degree situation timed sending that obtains, divide equally gain to just at the described centrifugal air compressor of emptying, make the open degree of suction valve of centrifugal air compressor wherein convergent, the open degree of the bypass valve of centrifugal air compressor is wherein also convergent, and suction valve and bypass valve overall open degree separately meet pneumatics demand.
6. the controlling method of air compression system as claimed in claim 5, it is characterized in that: timed sending is divided equally gain to just after the described centrifugal air compressor of emptying, if centrifugal air compressor is not received new yield value, original yield value lost efficacy the delay time warp default later.
7. the controlling method of air compression system as claimed in claim 1, is characterized in that: described some air compressors comprise some centrifugal air compressors, and this controlling method also comprises suction valve load sharing process:
Obtain the open degree situation of suction valve, bypass valve and the atmospheric valve of centrifugal air compressor;
When all centrifugal air compressors are all during the state at full capacity, loading or regulating, regularly to suction valve valve opening degree, to 100% centrifugal air compressor, do not send and do not divide equally gain, increase its open degree.
8. the control system of an air compression system, it is characterized in that: at least comprise air compressor plant, pressure transmitter and control unit, the some air compressors that are provided with gas holder in described air compressor plant and are attached thereto, described pressure transmitter is installed in described gas holder or its air mother manages above, and described control unit is connected with pressure transmitter with described air compressor respectively;
Described pressure transmitter, in order in the process of air compressing, detects the air pressure in gas holder;
Described control unit is at least controlled described air compressor in order to the force value obtaining according to the parameter of setting and detection, if detect the lower limit that the force value obtaining is less than goal pressure, according to a kind of default both gradeds, loads some air compressors wherein; If detect that the force value obtain is greater than goal pressure upper in limited time, according to default both gradeds unloading contrary when loading several air compressors wherein.
9. the control system of air compression system as claimed in claim 8, is characterized in that: default both gradeds prestore multiple, and described control unit, also in order to respond input operation, is selected wherein a kind of default both gradeds.
10. the control system of air compression system as claimed in claim 8, it is characterized in that: when loading some air compressors wherein according to a kind of default both gradeds, load after an air compressor, described control unit also judges whether to carry out the loading of next air compressor in order to pressure rise trend and default decision logic according to detecting.
The control system of 11. air compression systems as claimed in claim 8, it is characterized in that: described some air compressors comprise at least one frequency conversion air compressor, when loading some air compressors wherein according to a kind of default both gradeds, described control unit originates in a described frequency conversion air compressor in order to control it.
The control system of 12. air compression systems as claimed in claim 8, it is characterized in that: also comprise center, high in the clouds, router and Surveillance center, described control unit is controlled described air compressor by some PLC equipment, described Surveillance center and control unit are interconnected by described router, described PLC equipment and pressure transmission device are by realizing data transmission between described control unit and described router, described router is connected in internet, and then is connected with center, described high in the clouds by internet.
The control system of 13. air compression systems as claimed in claim 12, it is characterized in that: described router is table-type technical grade wireless router IR601, described Surveillance center and control unit are connected in an IPSEC VPN network jointly by described router, and a fixing public network IP of described Surveillance center configuration.
The control system of 14. air compression systems as claimed in claim 12, it is characterized in that: center, described high in the clouds is also realized the transmission of data and transferred between web software on terminal equipment and terminal equipment by being installed on, described web software is at least in order to realize following one of at least function:
According to the data that receive from center, described high in the clouds, judge whether to need to report to the police, if desired report to the police, push warning message;
Response user's operation, transfers system running state and parameter on described cloud server, thereby shows;
According to the Automatic generation of information of the data that receive from Cloud Server, the data that prestore and other people input and storage form;
Response user's operation, shows data in a different manner.
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