CN104880943A - Multiple-use and multiple-standby equipment management system - Google Patents

Abstract

The invention relates to equipment management. A multiple-use and multiple-standby equipment management system comprises three functional blocks, namely an equipment queuing module, a starting-and-stopping determining module and an operation mode switching module. The operation method of the multiple-use and multiple-standby equipment comprises the following steps: firstly determining which equipment serves as a working machine and which equipment serves as a standby machine and making the equipment enter the queuing module for waiting for activation starting; for activation starting, executing manually or executing by the starting-and-stopping determining module, wherein the starting-and-stopping determining module performs a starting function, a stopping function and a switching function according to the technological requirement and equipment condition; after the equipment is successively started, determining the operation mode of the equipment by the mode switching module, and for multiple already started equipment, determining which equipment operates automatically and which equipment operates manually, thereby realizing a required stable working condition; when a set of equipment stops, performing feedback of a stopping signal to a working condition mode module and making the working condition mode module to adjust the working condition again; and simultaneously, the stopped equipment is in a standby state, when the stopped equipment is ready and a condition is satisfied, entering the queuing module, waiting for next activation and starting as standby equipment. The multiple-use and multiple-standby equipment management system has advantages of improving product quality, saving energy and reducing energy consumption.

Description

Multiplex how standby equipment management system

Technical field

The present invention relates to equipment control, particularly relate to multiplex how standby equipment control.

Background technology

In automated system, in order to ensure the stable, reliable of production run, often need to design a set of above identical device, by reasonably combined, adopt the using and the reserved, several by several standby management method, not only save energy and reduce the cost, when many complete equipments run simultaneously, certain affluence amount can also be provided, improve the production capacity of expection.Wherein the management method of the using and the reserved is more common, and implementation method is also very ripe, even just can be achieved the goal by hardware circuit for automatic switchover.And start and stop, the handover management of above equipment is overlapped for two, due to process condition more complicated, substantially adopt manual mode more at present, operate more loaded down with trivial details.Its related data automatically managed is less, specifically implements more difficult.Particularly formed by hardware circuit, not only complex circuit, function singleness, and cost increases.

For certain Gas Pressurization Station, it is the auxiliary facility in limekiln, and engineering process device comprises spray cooling system, Holder System, compression system.Process route adopt calcium carbide furnace gas through mist cooling purification, gas-liquid separation, the pressurization of front pressuring machine, gas holder buffer storage, again through after pressuring machine pressurize deliver to pressure regulation platform at the bottom of limekiln.Wherein front compression system is two pressuring machines, and rear compression system is made up of 3 pressuring machines, selects ABB converter technique to regulate.Control system adopts Siemens SIMATIC S7300 PLC, carries out manual, semi-automatic and overall process automatically control process route.

In pressure process, when separate unit pressuring machine adopts automatic mode (omnidistance semi-automatic), set top hole pressure by regulator, PID regulates automatically, the rotating speed of pressuring machine can realize automatic PID according to the manifold pressure of gas exit and regulate, and can realize manual and automatic noiseless switching.When pressuring machine frequency of operation close to full range reach full load need to drop into pressuring machine for subsequent use run time, find following operating mode, when two all manually time, if inlet system operating mode changes, regulate more chaotic, bad assurance.When two all automatic, exist and rob coal gas phenomenon, be generally A machine frequency of operation very high, B machine frequency of operation is almost nil, causes the phenomenon of " bottleneck ".And when one manually, one automatic time, operating mode is more stable, easily realizes technological requirement.Therefore, if the thinking all will throwing automatic mode according to every complete equipment goes the management of design whole-process automatic, keep away the phenomenon of unavoidable " bottleneck ", do not reach technological requirement.

If adopt separate unit regulator to control the scheme of two pressuring machines, namely arrange a soft regulator in a computer, its output signal is given to two manual operators, similar serials control.Overshoot is caused for preventing the action simultaneously of two equipment, by the difference to some extent of the dead time in two manual operators, when regulator exports the frequency signal of requirement and actual feedback signal occurs deviation, the manual operator first action that dead band is little, if when deviation is little, just can corrects and come; When regulated quantity is inadequate, deviation increases, the manual operator also action that dead band is large, strengthens strength of adjustment, system is got back to rapidly in steady state (SS).When there is relatively large deviation in system; often there will be the phenomenon simultaneously exceeding the two dead zone range, then two pressuring machine actions simultaneously, make deviation be reduced to certain limit rapidly; now the regulator in large dead band stops action, and remaining little deviation is carried out further accurate adjustment by the regulator that dead band is little and put in place.By above analysis, finding that the program is when stable regulation, is exactly a manual automatic operating mode in fact.Although this sets of plan avoids " bottleneck " phenomenon, be the method for operation required by us, due to the dead time to some extent difference be unfavorable for the switching between individual device, therefore can only adopt its regime mode.

Summary of the invention

The present invention is intended to the defect overcoming prior art, provides a kind of multiplex how standby equipment management system.The object that invention achieves the safety in production of expection, improve the quality of products, save energy and reduce the cost.

In order to solve the problems of the technologies described above, a kind of multiplex how standby equipment management system of the present invention, it comprises device queue and waits module, start and stop judge module and operational mode handover module three core function block, and the following step:

First to determine who work machine who make guest machine, make it arrange in sequence and enter queue module, wait activate start;

Start for activation, can people be manual operation, also can be performed by start and stop judge module, this module plays start and stop and switching effect according to technological requirement and status of equipment;

When after device start success, determined the method for operation of this equipment by mode switch module, this module is the core of automated management system, and for the multiple devices started, which platform is manual automatically to judge which platform by it, reaches aforementioned required steady working condition;

When there being equipment to stop, stop signal feeds back to regime mode module, makes it readjust operating mode; Meanwhile, the equipment after stopping is in standby condition, when the condition of being ready to meets, enters queue module, waits again activate startup as guest machine.

The present invention is in the normal situation of production, and pressure stability, at about 14.7Kpa, meets the requirement of user completely, and converting operation is in about 30 ~ 40Hz simultaneously, the object reaching the safety in production of expection, improve the quality of products, save energy and reduce the cost.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention is further illustrated:

Fig. 1 is schematic diagram of the present invention;

Fig. 2 is that device queue waits high-level schematic functional block diagram;

Fig. 3 is start and stop arbitration functions module diagram;

Fig. 4 operational mode handoff functionality module diagram.

Embodiment

As shown in Figure 1, management system of the present invention waits 1 primarily of device queue, start and stop judge 2, operational mode switches 3 three core function block compositions.

1, device queue waits functional block (Fig. 2): this functional block primary responsibility equipment typing, and performs start-up performance according to the order of first-in first-out.Left side IN_A, B, C pin is recording device, and it successively can manually input also can pass through programming realization according to equipment work cumulative time or other technological requirements.Its quantity can according to the actual number of units increase and decrease in scene.IN_REQ pin is for starting request, and IN_CLR pin is clearing effect.The right pin be equipment be activated start export.

2, start and stop arbitration functions block (Fig. 3): this functional block plays start and stop and switching effect according to technological requirement and status of equipment.When pressuring machine is for unsaturated vapor, frequency of operation close to full range reach full load need to drop into pressuring machine for subsequent use run time, or during pressuring machine fault, triggered by IN_JUMP pin, sent by OUT_SW pin and start guest machine instruction, when multiple stage pressuring machine air feed is excessive, triggered by IN_REST pin, by OUT_OFF1,2,3 pins send guest machine halt instruction.

3, operational mode handoff functionality block (Fig. 4): the operational mode of this functional block primary responsibility determination equipment.When separate unit pressuring machine adopts automatic mode, when automatically being regulated by PID, if another pressuring machine condition for subsequent use meets add work, then send LOCK instruction to last, make it be in manually or hold mode operation, the pressuring machine then added is in automatic mode.By that analogy, always last guest machine keeps automatic mode to regulate, and former stand lock is fixed.On the contrary, when guest machine is deactivated, last then unlocks, and becomes guest machine and carries out automatic mode adjustment.Wherein, if the blower fan locked is deactivated because of certain reason, the automatic shaping modes of guest machine is not affected.When all guest machines all exit, then revert to separate unit pressuring machine automatic mode operation.In this example, the function of LOCK instruction is that automatic mode is switched to Holdover mode, if production technology changes, can carry out other application according to working condition requirement to LOCK instruction.The each pin in the functional block left side is equipment working state, and the right is that instruction exports.

Establishment HMI operation screen:

Automatic supervisory frame is divided into the method for operation, duty, operation control, equipment typing four parts.Make every effort to simple to operation, information is very clear.At status bar, provide each compression system duty by pilot lamp, convenient operation personnel grasp current information, each complete equipment of reasonable employment.On typing hurdle, show service condition and the typing order of current each equipment, if manually inputted, only need mouse to click each systematic square frame.Color on square frame represents the service condition of this system.In control group, pressurization setting value can be inputted.

The control mode of control system of the present invention is:

First to determine who work machine who make guest machine, make it arrange in sequence and enter queue module, wait to activate and start, click system button, selected each system is by being successively arranged in digital hurdle;

Activation is started, can people be manual operation, also can be performed by start and stop judge module; this module plays start and stop and switching effect according to technological requirement and status of equipment; the system button be activated becomes green, can not be chosen as standby host simultaneously and use, until after the stopping of this system;

When after device start success; the method of operation of this equipment is determined by mode switch module; this module is the core of automated management system; for the multiple devices started; which platform is manual automatically to judge which platform by it; reach aforementioned required steady working condition, if system starts successfully, running status word can be occurred above this system button;

When there being equipment to stop, stop signal feeds back to regime mode module, makes it readjust operating mode; Meanwhile, the equipment after stopping is in standby condition, and system button becomes white background, when the condition that is ready in state box meets, enters queue module, waits again activate startup as guest machine.

Claims (1)

1. a multiplex how standby equipment management system, is characterized in that, it comprises device queue and waits module, start and stop judge module and operational mode handover module three core function block, and the following step:

First to determine who work machine who make guest machine, make it arrange in sequence and enter queue module, wait activate start;

Start for activation, can people be manual operation, also can be performed by start and stop judge module, this module plays start and stop and switching effect according to technological requirement and status of equipment;

When after device start success, determined the method for operation of this equipment by mode switch module, this module is the core of automated management system, and for the multiple devices started, which platform is manual automatically to judge which platform by it, reaches aforementioned required steady working condition;

When there being equipment to stop, stop signal feeds back to regime mode module, makes it readjust operating mode; Meanwhile, the equipment after stopping is in standby condition, when the condition of being ready to meets, enters queue module, waits again activate startup as guest machine.