机械专业外文文献翻译@外文翻译PLC在电厂输煤自控系统中的应用.doc

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1、附录：中英文翻译The PLC loses the coal in the power stations from the application in the systemTake off to want: Combination MITSUBISHI Characteristics and power station that FX2n type the PLC lose the special request of the coal system, and introduce the PLC in the power station to lose the coal system con

2、venient lock the procedure design and the application of the control .Key phrase: The programmable logic controller( PLC) loses the coal from the system the lock control the industry control the calculator 1 Programmable logic controller( PLC) is eight 10- Year on behalf new generation industry that

3、 develop the control equip, and is an automatic control, calculator with the thing that the correspondence technique combine together, and is a the spot equipments for exclusively used forcing the industry production line controlling. Make the PLC there is characteristics of obvious oneself on the d

4、esign with the long- term and continuous that circulate because of the special of the complexity, usage environment of the control object: The dependable is high, and the adaptability is wide, and have to correspond by letter the function, and weave the convenience, construction mold piece . Gather

5、the control in the modern in the system, the PLC have already become a kind of importance of basic control unit, control the realm the inside in the industry applied the foreground is very and extensive. Importance, we that In the some power station that writer and develop to lose the coal from the

6、system inside, system request is keep offing to lose the main factory premises control room of the coal , right two coal line for losing set equipmentses of 18 movement appearance and leather belts proceeds control, and the solid hour monitor the equipments to run the circumstance of the . The lose

7、the coal system in the power station to adopt the PLC to realize to lose the lock of the coal equipments the control with its dependable of assurance to control the calculator with special, industry to then be used as the place of honor machine and PLC to work in coordination, and together complete

8、to lose the supervise and controlling of coal system the function.This text will primarily introduce the PLC control application: The loses the coal system the control request Lose the coal system to have two lose the coal line, and include the coal the machine, leather belt the machine, vibration ,

9、 crusher. etc. Totally 18 set equipments, extremely have got in the power station important position, once cant normal work, generate electricity and then can suffer the influence. Produce the dependable that circulate for the sake of the assurance, and lose the coal system the adoption auto( lock),

10、 move( single machine) the method of two kinds of controls, auto, move the way from the switch to proceeds to cut over. Because of losing the coal the environment bad, all operations control to all proceeds in the main control room of the main factory premises, and the appearance dish up establish t

11、o have the of the each equipments, stop to press button, return the capable PLC offering the importation the signals control switch. Lose the coal equipments the control function to be realized by PLC, and the equipments appearance monitor to run the with leather belt to monitor and the trouble reco

12、rd the function to then be controlled by upper grade industry the calculator to complete. Lose the coal system normal for the sake of the assurance, the dependable movement, that system is at the request of satisfy below:The provides the coal, starting of each equipments, stop must follow the partic

13、ular sequencing, and namely proceeds to each equipments the lock control; The each equipments of starts with stop the process inside, and want the reasonable to establish the time partition.( Postpone hour) start to postpone unify to set up to 12 second. When postponing parking press the equipments

14、different request but set up, and is divided into 10 s,20 s,30 s,40 s,60 several kinds of sees, then guarantee the parking the crusher carry the appearance for , each lose the coal leather belt to up have no the surplus coal; The circulates the process inside, some a set equipments When the occurren

15、ce break down, should immediately send out to report to the police to combine the automatic parking, equipments in its front( point to provide the direction) to also immediately park the car. Afterward the square equipments press certain sequence and postpone the hours lock the parking; The is each

16、to lose the coal leather belt to establish to have the double the direction to run the switch, and run the 15 degree hours send out to tell the signal, and run the 30 degree hours tell the to combine the automatic parking; The can the on- line choice start to provide for use the equipments. can cons

17、titute to cross to provide the coal method from two relevant equipments for losing the coal lines in the special circumstance; The can the on- line choice start to provide for use the equipments. can constitute to cross to provide the coal method from two relevant equipments for losing the coal line

18、s in the special circumstance; The can show the electricity equipments of each machine to circulate the condition, and combine right lose the relevant circumstance( report to the police, automatically shut down etc.) of coal process to do out the solid hour record. 2. PLC controls the system design

19、2.1 The PLC chooses the type According to lose the coal system from the to request, and we chose to use the MITSUBISHI .Company latest FX2n type that release PLC, have the dependable high, physical volume ? The basic CPU unit chooses to use of is a CPU214, function as follows:2048 procedure 48 data

20、14:00 importationseses, exportation of 10:00; Can expand 7 mold pieces;128 s that settle the hour;128 count the ;4 hardware interruptions, interruptions that settle the hour; Solid hour clock; The high speed counts the ; Can make use of the PPI agreement or free the proceeding correspondence;3 clas

21、s password aegis. Expand the mold piece to choose to use the EM221,8 importation points;EM223,16 importation points,16 exportation points. 2.2 System relation System relation is such as the figure 1 show. At lose the coal from the system the inside, industry control the calculator to be used as the

22、place of honor machine with lose the coal to control the PLC to proceed correspondence, and movement leather belt ran signal with equipments the appearance proceeds solid the hour adopt the kind, and combine to show to lose the coal system to imitate the true appearance on held the act, can the grou

23、nd inspect the equipments appearance. When the leather belt run the ( run the 15 degree), show to report to the police the appearance on held the act; When the equipments occurrence break down or the leather belt run the ( run the 30 degree) seriously, show to report to the police the appearance on

24、held the act and send out the trouble to PLC to park the car the signal. Then lose the coal control the PLC to carry out according to the importation signal of the control switch right in response to the procedure piece function for, controlling electrical engineering realizing rightly should: Headi

25、ng up the class industry the control calculator to send out a information, and receive the upper grade industry the control the calculator the trouble that send out to park the car the signal, and realize the trouble park the car to handle the function and start to report to the police the equipment

26、s. two match with to together realizes to lose the coal system of monitor with control the function. The calculator of upper grade industry control realizes at the same time to supervise and controlling of other system of power station, be controlled by industry calculator, lose the coal system the

27、PLC with the common composing of the spot equipments( PLC, supervise and control the appearance) of the other system distribute type system.( DCS) 2.3 Circulate the mode According to lost the request, this system of the coalprocess to design the mode of two kinds of movements. proceed together the m

28、ode in the general circumstance, adoption, and can alone choose to use according to the demand or circulate to lose the coal at the same timea glimmer of with lose the coal two line. The mode that cross the relevantequipments be lost by lost the coal a glimmer only with coal two lines constitute of,

29、 only choose to use in the special circumstance. 2.3.1 Proceed together the mode Abreast a glimmer of: The lock drives the sequence:10# leather belt machine 8# leather belt machine 6# leather belt machine 2# crusher 2# vibration 4# leather belt machine 2# leather belt machine 2#(3#) s give the coal

30、machine 4# to the coal machine. The locks the parking the sequence: With drive in proper order contrary, postpone always press above request enactment.2 the #,3# give the coal machine some inside a pedestal back up. Proceed togethertwo line The lock drives the sequence:9# leather belt machine 7# lea

31、ther belt machine 5# leather belt machine 1# crusher 1# vibration 3# leather belt machine 1 the# leather belt machine 1# give the coal machine. The locks the parking the sequence: With drive in proper order contrary, postpone always press above request enactment. 2.3.2 Cross the mode Cross the line

32、The lock drives the sequence:9# leather belt machine 7# leather belt machine 6# leather belt machine 2# crusher 2# vibration 4# leather belt machine 2# leather belt machine 2#(3#) s give the coal machine. The locks the parking the sequence: With drive in proper order contrary, postpone always press

33、above request enactment.2 the #,3# give the coal machine among them a pedestal back up. 2.4 PLC procedure design Aim at to lose the control of the coal system the request and in a specific way control the realizes, designing of project the procedure process if the diagram show. 2.4.1 Procedure eluci

34、dation Position that son mold piece 0: Procedure of early beggar. when the PLC add the electricity establish to scribe according to the each switch. Only at the first scan the period to carry out. son mold piece 1: Proceed together a glimmer of the lock the to stop to control the procedure. Accordin

35、g to start to scribe a 1 realizes to proceed together a glimmer of lock start, the lock park the car, and judge the trouble parking the signal then realize trouble parking. son mold piece 2: Proceed together the second class the lock the to stop to control the procedure. According to start to scribe

36、 a lock for 2 with realizes and proceed teetering second lines to start, the lock park the car, and judge the trouble parking the signal then realize trouble parking. son mold piece 3: Cross the line lock the to stop to control the procedure, according to start to scribe a for 3 realizes to crossing

37、 line to lock to start, the lock park the car, and judge the trouble parking the signal then realize trouble parking. The exportation signal of the PLC controls the electrical engineerings contact , and start to send the high electricity even, stop sending the low electricity even. but,1# the crushe

38、r power amount to 90 kWs,2# the crusher power amount to 110 KW, demand decline to press to start, therefore start the PLC for PLC to send a positive pulse, parking send a negative pulse. 2.4.2 Procedure characteristics the usage of the special marking: Use the special marking the SM0.1, and make the

39、 procedure( son mold piece 0) of early beggar only at the first scan the period to carry out, but in the scanning of hereafter the period no longer carry out. Like this, individual scribe the influence for after PLC add electricity not summit to switch changing. For example, proceed together the mod

40、e with cross the mode only right scribe to can change after turn offing the main switch. The inner part scribes usage: In the procedure, make use of to scribe the dependable for coming meaning the different the spot circumstance with procedure appearance, increasing the procedure with thevivid. proc

41、edure mold piece : The procedure be constituted by piece of different son mold, and the piece of each son mold is independent to complete each from the function, with each other not interference, because but the procedure construction is clear, convenient for modification. The usage of the for to se

42、ttle: Procedure inside, make use of the different to settle the come set upping the postponing of different equipments always, can vividly request to proceed to postpone the enactment of time hour according to the control. 2.5 Diagram of part of procedure trapezoids When the trapezoid diagram, T37 t

43、hat diagram show to lock the to stop to control for part of s control equipments used fours the starting to postpone of parking, T40 the T46 used for the control cowgirl the equipments to postpone, receive the parking signal, pass by the postponing of cowgirl, right settle the place from but realize

44、 lock of parking.Q0.3 is 1# starting of crusher the control output the passage, and start 1# the crusher hour send out a width to 2 second positive pulses.Q0.7, Q1.0 respectively is 2# give the coal machine,3# s are to the control exportation of the coal machine passage, M0.1, M0.2 Is an inner part

45、marking, used for to guarantee 2#,3#s are to the coal machine always for a the set work, a pedestal back up. In fine, in this system, PLC conduct and actions the spot control equipments, can dependable, accurately complete the control the operation, and can pass with upper grade work machine corresp

46、ondence, constitute the distribute type the system to together complete to lose the monitoring of coal, system control request, is a modern industry control the inside compare forerunners control project, and apply the foreground to is extensive.Now, this system is already in the Inner Mongolia grou

47、p Sulkily the power station input circulate, can dependable, accurately complete the control operation, solid the hour monitor with record to lose the coal process the movement the condition, and can affairs of every kind of hair to appear to the spot on time do out to respond to, obtain the good result. PLC在电厂输煤自控系统中的应用摘 要： 三菱（MITSUBISHI）- FX2n型PLC的特点以及电厂输煤系统的特殊要求，介绍了PLC在电厂输煤系统中用于联锁控制的程序设计及应用。关键词： 可编程逻辑控制器（PLC）输煤自控系统 联锁控制 工业控制计算机 可编程逻辑控制器（PLC）是八十年代发展起来的新一