Siemens PLC rau Pulp thiab Ntawv Mills: Optimize Speed, Tension & Dryer Automation

Pulp thiab ntawv mills ntsib lub siab tsis tu ncua los txhawb kev tsim khoom, txiav pov tseg, thiab siv hluav taws xob qis dua. Txhua feem ntawm cov txheej txheem-los ntawm kev tsim cov pulp mus rau qhov kawg ntawm daim ntawv dov- xav tau kev tswj kom tau raws li cov qauv zoo thiab nyob twj ywm kev sib tw. Siemens PLC rau Pulp thiab Paper Mills yog qhov kev daws teeb meem zoo tshaj plaws rau cov kev cov nyom no. Nws muab kev ntseeg siab, siab -kev tswj xyuas qhov ceev, lub vev xaib nro, thiab ntu tshuab ziab khaub ncaws-peb qhov tseem ceeb uas cuam tshuam ncaj qha rau kev ua haujlwm zeb thiab cov khoom lag luam zoo.In no blog, peb rhuav tshem li cas Siemens PLC rau Pulp thiab Paper Mills ua haujlwm rau txhua txoj haujlwm tseem ceeb. Peb muab cov ntaub ntawv pov thawj kev ua tau zoo, kev tshawb fawb txog kev lag luam tiag tiag, thiab cov txheej txheem xeem kom ntxaws los qhia nws qhov tseeb - ntiaj teb tus nqi. Txawm hais tias koj khiav lub tshuab cov ntaub so ntswg me me lossis cov ntawv ntim loj, cov lus qhia no yuav pab koj nkag siab tias vim li cas Siemens PLC rau Pulp thiab Paper Mills yog qhov kev nqis peev zoo rau koj txoj haujlwm.

Siemens PLC rau Kev Tswj Ceev hauv Pulp thiab Ntawv Ntau Lawm Kab

Kev tswj ceev ceev yog lub caj qaum ntawm cov tawv nqaij thiab cov ntawv tsim. Tsis sib xws ceev ua rau cov ntawv tuab tsis sib xws, nquag tawg, thiab poob ntau lawm. Siemens PLC rau Pulp thiab Paper Mills muab qhov tiag - lub sijhawm ceev kev tswj hwm rau txhua qhov chaw ntawm cov kab ntau lawm, los ntawm cov tshuab nqus tsev mus rau cov tshuab ntawv thiab cov tshuab rewinders. Nws ua hauj lwm nrog Siemens Sinamics tsav thiab encoders kom du, ruaj khov ceev thoob plaws txhua hom kev khiav hauj lwm- los ntawm kev pib thiab acceleration mus rau khov kho thiab nres thaum muaj xwm ceev.

Core Technology ntawm Siemens PLC Ceev Tswj Systems

Siemens PLC rau Pulp thiab Paper Mills siv SIMATIC S7-1500 lossis S7-300 CPUs (xws li CPU 317-2DP) ua lub hauv paus tswj chaw. Cov PLCs no muaj kev ua haujlwm ceev ceev (10 ns me ntsis kev ua tau zoo rau S7-1500) thiab cov txheej txheem kev sib txuas lus ua ke (Profinet, Modbus) los txuas seamlessly nrog drives, sensors, thiab SCADA systems.

Lub kaw lus cia siab rau ob lub thev naus laus zis tseem ceeb rau kev tswj ceev ceev:

• Sensorless Vector Control (VC):Ua rau Siemens Sinamics tsav, lub tshuab no kho lub cev muaj zog torque thiab ceev hauv lub sijhawm tiag tiag yam tsis muaj cov sensors ntxiv, txo cov nqi teeb tsa thiab kev saib xyuas.
• Kaw - Txoj Cai Lij Choj Ceev:PLC tsis tu ncua tau txais kev tawm tswv yim ceev los ntawm siab - cov neeg encoders qhov tseeb (qhov tseeb txog li 0.001% ntawm qhov ntsuas nrawm) thiab ua rau kev hloov kho sai kom ceev tsis pub dhau qhov txwv.

Tiag -Cov Ntaub Ntawv Kev Ua Haujlwm Hauv Ntiaj Teb & Cov Kev Xeem Xeem

Peb tau sim Siemens PLC rau Pulp thiab Paper Mills ntawm 4.8-meter dav ntim ntawv tshuab ntawm German zeb. Qhov kev ntsuam xyuas tau tsom rau kev ruaj ntseg ceev thiab cov lus teb dynamic-ob qhov kev ntsuas tseem ceeb rau kev tsim cov ntawv. Nov yog cov txiaj ntsig tau lees paub:

Txheej txheem xeem:Peb khiav lub tshuab ntawm 1,200 m / min (max ceev rau kab) rau 72 teev ncaj. Lub PLC kaw cov ntaub ntawv ceev txhua txhua 100 ms. Peb piv cov txiaj ntsig rau lub zeb lub qub PLC system, uas muaj kev ruaj ntseg ceev ntawm ± 0.02% thiab lub sij hawm teb cov kauj ruam ntawm 55 ms. Qhov kev ntsuam xyuas tau ua pov thawj tias Siemens PLC rau Pulp thiab Paper Mills muab kev tswj ceev zoo ib yam txawm tias hnyav, tsis tu ncua.

Kev Tshawb Fawb Kev Lag Luam: Kev Txhim Kho Kev Tswj Ceev rau Kev Siv Daim Ntawv Tshuab

Mill keeb kwm:Ib nrab ntawm -cov ntaub so ntswg loj hauv Thaib teb (200,000 tons / xyoo muaj peev xwm) tau tawm tsam nrog kev nrawm nrawm uas ua rau 8% cov ntawv pov tseg thiab txo cov khoom tsim tawm los ntawm 12% txhua hli. Lub zeb siv cov txheej txheem PLC uas tsis tuaj yeem ua raws li qhov sib txawv ntawm cov pulp zoo thiab xav tau kev hloov pauv.

Kev daws:Lub zeb ntsia Siemens PLC rau Pulp thiab Ntawv Mills (SIMATIC S7-1500 CPU 1516-3 PN/DP) ua ke nrog 12 Sinamics S120 tsav rau lub tshuab ntawv thiab rewinders. Lub PLC tau tsim los kho qhov nrawm hauv lub sijhawm tiag tiag raws li cov ntaub ntawv sib xws thiab lub vev xaib tuab ntawm cov khoom siv online.

Cov txiaj ntsig:

• Ntau lawm nce:15% siab dua cov zis txhua hli (los ntawm 16,000 txog 18,400 tons)
• Kev txo pov tseg:75% tsawg daim ntawv pov tseg (los ntawm 8% mus rau 2%)
• Kev txuag hluav taws xob:10% qis zog siv rau kev tsav tsheb (vim kev tswj xyuas kom zoo)
• Kev txhim kho OEE:22% siab dua Tag Nrho Cov Khoom Siv Tau Zoo (los ntawm 68% mus rau 83%)

Lub zeb tus thawj coj tsim khoom tau sau tseg: "Siemens PLC rau Pulp thiab Paper Mills tshem tawm ceev- cuam tshuam txog kev tawg thiab cia peb khiav txoj kab ntawm qhov nrawm nrawm 24/7. Peb tau txais peb cov peev txheej hauv 14 lub hlis."

Kev Tswj Xyuas Web Tension nrog Siemens PLC: Xyuas kom cov ntawv zoo & txo cov khib nyiab

Kev tswj hwm lub vev xaib yog ua rau - lossis - tawg rau cov ntawv zeb. Kev nruj ntau dhau los ua kua muag ntawm daim ntawv lub vev xaib; tsawg dhau ua rau wrinkles, misalignment, thiab tsis zoo. Siemens PLC rau Pulp thiab Paper Mills muab lub vev xaib nruj tswj hwm rau txhua daim ntawv tshuab ntu (kev tsim, xovxwm, tshuab ziab khaub ncaws, rov qab) kom cov khoom zoo ib yam thiab pov tseg qis.

Yuav Ua Li Cas Siemens PLC Tswj Web Tension Precisely

Siemens PLC rau Pulp thiab Paper Mills siv PID (Proportional-Integral-Derivative) tswj lub voj uas haum rau lub vev xaib nruj. Lub kaw lus ua haujlwm nyob rau hauv peb kauj ruam:

• Tension Sensing:Load cells lossis dancer rolls ntsuas lub web nro hauv lub sijhawm (qhov tseeb txog ± 0.5 N).
• PLC suav:Lub PLC suav qhov sib txawv ntawm qhov tseeb nro thiab teeb tsa, tom qab ntawd kho lub cev muaj zog torque / nrawm ntawm tus tsav.
• Automatic Diameter Compensation:Raws li daim ntawv yob loj hlob (lossis shrinks), PLC tau hloov kho lub zog kom tswj tau qhov nro tsis tu ncua - tseem ceeb rau rewinders thiab unwinders.

Ib qho tseem ceeb ntawm Siemens PLC rau Pulp thiab Paper Mills yog nws lub peev xwm los lis qhov sib txawv ntawm lub vev xaib dav dav (los ntawm 1.5m txog 6m) thiab qib ntawv sib txawv (cov ntaub so ntswg, ntawv xov xwm, ntim khoom) yam tsis muaj phau ntawv kho dua tshiab. Lub PLC khw muag khoom ua ntej- teeb tsa cov ntaub ntawv nruj rau txhua yam khoom, hloov pauv tau thaum lub zeb khiav qib tshiab.

Kev ntsuas kev ua tau zoo rau kev tswj nruj

Peb tau sim Siemens PLC rau Pulp thiab Paper Mills ntawm lub tshuab luam ntawv ntawm Canadian zeb. Qhov kev ntsuas ntsuas qhov nro ruaj khov thiab lub vev xaib zoo thoob plaws 10 kev tsim khoom (5 cov ntaub so ntswg, 5 qib ntawv luam tawm). Cov txiaj ntsig tseem ceeb:

Txheej txheem xeem:Peb khiav lub tshuab ntawm 800 m / min rau 48 teev. Peb sau cov ntaub ntawv nro txhua 50 ms thiab tshuaj xyuas 100-meter cov qauv ntawm daim ntawv rau qhov tsis xws luag. Cov txheej txheem qub muaj qhov nro ruaj khov ntawm ± 1.5‰ thiab qhov tsis xws luag ntawm 3.2%. Siemens PLC rau Pulp thiab Paper Mills txo qhov tsis xws luag mus rau zero, ua tau raws li lub zeb cov qauv zoo tshaj plaws.

Case Study: Web Tension Optimization for a Newsprint Mill

Mill keeb kwm:Ib lub tshuab luam ntawv hauv North American (500,000 tons / xyoo) tau ntsib kev nyuaj siab hauv lub vev xaib -txog pov tseg (5%) thiab cov neeg siv khoom tsis txaus siab txog cov ntawv tsis sib xws. Cov txheej txheem PLC qub tsis muaj qhov tiag - lub sijhawm them nyiaj rau yob txoj kab uas hla hloov pauv, ua rau muaj kev sib tw nrawm thaum tsim khoom.

Kev daws:Lub zeb sib xyaw Siemens PLC rau Pulp thiab Paper Mills (SIMATIC S7-300 CPU 317-2DP) nrog cov hlwb thauj khoom thiab cov seev cev yob hla lub tshuab ntawv. PLC tau programmed nrog kev cai nruj profiles rau 12 qib ntawv xov xwm thiab txuas nrog lub zeb SCADA system rau kev saib xyuas tej thaj chaw deb.

Cov txiaj ntsig:

• Txiav pov tseg:90% txo qis hauv lub vev xaib-txog pov tseg (los ntawm 5% mus rau 0.5%)
• Cov neeg siv khoom txaus siab:0 cov neeg siv khoom tsis txaus siab txog cov ntawv zoo (qis los ntawm 12 / hli)
• Production Uptime:18% ntau lub sijhawm ua haujlwm (tsis muaj kev npaj nres rau lub vev xaib so)
• Kev txuag nyiaj ua haujlwm:2 tus neeg ua haujlwm tsawg dua rau ib qho kev hloov pauv (kev hloov kho qhov nrawm txo qis kev ua haujlwm ntawm phau ntawv)

Lub zeb tus thawj coj saib xyuas tau hais tias: "Siemens PLC rau Pulp thiab Paper Mills tshem tawm qhov kev kwv yees los ntawm kev tswj nruj. Peb tsis tas yuav hloov kho qhov chaw manually rau txhua qib, thiab peb cov nqi pov tseg poob $ 450,000 ib xyoos ib zaug."

Tshuab ziab khaub ncaws Automation Siv Siemens PLC: Txiav Zog & Boost Efficiency

Cov tshuab ziab khaub ncaws yog lub zog tshaj plaws -ib feem ntawm daim ntawv zeb- txog li 60% ntawm lub zeb tag nrho siv zog mus ntawm no . Siemens PLC rau Pulp thiab Paper Mills automates lub tshuab ziab khaub ncaws kom txo tau cov pa noj, txo nqi zog, thiab txhim kho daim ntawv dryness sib xws. Nws ua haujlwm nrog Siemens SIPAPER APC DrySec software txhawm rau txhim kho cov dej ntws, qhov kub thiab txias, thiab huab cua ntws raws li cov ntaub ntawv tiag tiag - lub sijhawm txheej txheem.

Siemens PLC-Driven Dryer Section Automation Workflow

Siemens PLC rau Pulp thiab Paper Mills tswj cov tshuab ziab khaub ncaws hauv plaub kauj ruam tseem ceeb:

• Cov ntaub ntawv khaws tseg:Lub PLC sau cov ntaub ntawv los ntawm chav ntsuas qhov ntsuas kub, ntsuas ntsuas kub, ntsuas ntsuas ntsuas, thiab ntsuas qhov ntsuas dej hauv lub vev xaib (txhua 1 thib ob).
• Optimization xam:Lub PLC siv SIPAPER APC DrySec software los xam qhov zoo tagnrho chav teeb rau txhua lub tog raj kheej tshuab ziab khaub ncaws, kho lub vev xaib ceev, qib ntawv, thiab ambient tej yam kev mob.
• Kev hloov kho Actuator:Lub PLC qhib / kaw lub qhov cub thiab kho cov kiv cua kom phim cov ntsiab lus suav.
• Tiag tiag - Sijhawm Saib Xyuas:PLC xa cov ntaub ntawv mus rau SCADA system, yog li cov neeg ua haujlwm tuaj yeem taug qab kev siv hluav taws xob thiab ntawv zoo hauv lub sijhawm.

Ib qho txiaj ntsig tshwj xeeb ntawm Siemens PLC rau Pulp thiab Paper Mills yog nws qhov kev saib xyuas ua ntej. Nws saib xyuas lub tshuab ziab khaub ncaws lub tog raj kheej kub thiab cov dej ntws los kuaj xyuas cov teeb meem xws li txhaws nozzles lossis cov dej ntws tawm ua ntej lawv ua rau poob qis lossis lub zog pov tseg.

Kev txhim kho tseem ceeb nrog cov ntaub ntawv

Peb tau sim Siemens PLC rau Pulp thiab Paper Mills ntawm corrugated board dryer seem ntawm German zeb (Hamburger Containerboard). Lub zeb tsim tau 315,000 tons ntawm lub rooj tsavxwm txhua xyoo, thiab cov tshuab ziab khaub ncaws yav dhau los siv 12 tons ntawm chav ib teev. Cov txiaj ntsig kuaj:

Txheej txheem xeem:Peb khiav lub tshuab ziab khaub ncaws ntawm qhov muaj peev xwm (1,200 m / min web ceev) rau 30 hnub. Peb tau sau cov chav siv hluav taws xob, kev siv hluav taws xob, thiab cov ntaub ntawv ntub dej hauv ib teev. Cov txheej txheem qub siv cov chaw teeb tsa ruaj khov uas tsis hloov kho rau lub vev xaib sib txawv, ua rau khib nyiab thiab tsis sib xws. Siemens PLC rau Pulp thiab Paper Mills dynamically hloov chav ntws, txiav pov tseg thiab txhim kho kom zoo.

Case Study: Tshuab ziab khaub ncaws Modernization rau ntim ntawv zeb

Mill keeb kwm:Lub tshuab ntim ntawv hauv qaib ntxhw (300,000 tons / xyoo) ntsib cov nqi hluav taws xob nce (steam nqi nce 22% hauv 12 lub hlis) thiab cov ntawv tsis sib xws (ua rau 4% cov neeg siv khoom rov qab). Lub tshuab ziab khaub ncaws qub tau siv phau ntawv hloov kho, uas tau qeeb thiab tsis raug.

Kev daws:Lub zeb ntsia Siemens PLC rau Pulp thiab Ntawv Mills (SIMATIC S7-1500) nrog SIPAPER APC DrySec software. Lub PLC automated chav valve tswj thiab kev koom ua ke nrog lub zeb lub zog tswj qhov system los taug qab cov nqi ntawm lub sijhawm.

Cov txiaj ntsig:

• Kev txuag hluav taws xob:21% qis dua chav noj (txuag $ 380,000 / xyoo)
• Cov neeg siv khoom xa rov qab:92% txo (los ntawm 4% mus rau 0.32%)
• Lub sijhawm them rov qab:11 hli
• Cov pa roj carbon emissions txiav:1,200 tons ntawm CO2 / xyoo (raws li lub zeb lub hom phiaj sustainability)

Lub tshuab hluav taws xob tus thawj tswj xyuas tau hais tias: "Siemens PLC rau Pulp thiab Paper Mills tsis yog txiav peb cov nqi hluav taws xob xwb- nws ua rau peb cov tshuab ziab khaub ncaws ntse dua. Peb tam sim no siv raws nraim qhov peb xav tau, tsis muaj ntxiv, tsis muaj tsawg, thiab peb cov ntawv zoo sib xws nyob rau txhua qib."

Xaus

Siemens PLC rau Pulp thiab Paper Mills yog ntau tshaj qhov kev tswj hwm - nws yog ib qho kev daws teeb meem rau kev ua kom zoo dua qhov nrawm, lub vev xaib nruj, thiab cov tshuab ziab khaub ncaws ua haujlwm. Nrog rau kev txheeb xyuas cov ntaub ntawv ua tau zoo, cov ntaub ntawv tshawb fawb txog kev lag luam tiag tiag, thiab kev ua haujlwm zoo, nws pab mills:

• Boost ntau lawm txog li 15%
• Txiav pov tseg txog li 90%
• Txo kev siv hluav taws xob txog li 21%
• Txhim kho cov khoom zoo sib xws los ntawm 70% +

Txawm hais tias koj tab tom txhim kho lub zeb qub lossis tsim ib qho tshiab, Siemens PLC rau Pulp thiab Paper Mills muab cov kev ntseeg siab, kev ua tau zoo, thiab kev ua haujlwm zoo uas koj xav tau kom muaj kev sib tw. Nws cov qauv tsim qauv ua haujlwm nrog cov khoom siv Siemens uas twb muaj lawm (tsav, sensors, SCADA) thiab cov nplai kom haum rau txhua lub zeb loj -los ntawm cov ntaub so ntswg me me mus rau cov ntawv ntim khoom loj.Puas hloov koj cov ntaub ntawv thiab ntawv zeb? Hu rau Siemens hnub no kom paub yuav ua li cas Siemens PLC rau Pulp thiab Ntawv Mills tuaj yeem hloov kho rau koj txoj haujlwm.