某石化集團(tuán)有2臺(tái)石油氣壓縮機(jī)，單機(jī)額定功率75kW，一開一備運(yùn)行方式，而在實(shí)際生產(chǎn)中只需大約45kW輸出功率。壓縮機(jī)在低于額定工況下運(yùn)轉(zhuǎn)，負(fù)載率較低，而且其風(fēng)壓與流量大小要靠手動(dòng)閥調(diào)節(jié)，操作困難，也浪費(fèi)大量電能。為此，考慮采用變頻調(diào)速技術(shù)進(jìn)行改造，用PLC實(shí)現(xiàn)自動(dòng)調(diào)節(jié)和各種控制功能。運(yùn)行實(shí)踐證明，該方案穩(wěn)定可靠，經(jīng)濟(jì)效果明顯?！ ∫?工藝要求 (1)正常生產(chǎn)過程中，2臺(tái)壓縮機(jī)應(yīng)至少有1臺(tái)運(yùn)行，即使在相互切換時(shí)，也不允許發(fā)生兩臺(tái)機(jī)器全部停止的現(xiàn)象?！ ?2)保持壓縮機(jī)出口壓力在預(yù)定值上?！ ?3)能實(shí)現(xiàn)對(duì)壓縮機(jī)運(yùn)行狀態(tài)進(jìn)行分析，以實(shí)現(xiàn)預(yù)測(cè)性檢修?！ 《?系統(tǒng)控制原理 (1)工藝專業(yè)設(shè)定壓縮機(jī)管網(wǎng)正常出口壓力為P1，而現(xiàn)場(chǎng)實(shí)際測(cè)定壓力為P2，根據(jù)ΔP(=P2-P1)值大小由PLC內(nèi)PID功能模塊進(jìn)行PID運(yùn)算，控制變頻器來改變電動(dòng)機(jī)轉(zhuǎn)速，達(dá)到所要求的壓力。當(dāng)ΔP＞0時(shí)，現(xiàn)場(chǎng)壓力偏高，則提高變頻器輸出頻率，使電動(dòng)機(jī)轉(zhuǎn)速加快，提高實(shí)際風(fēng)壓；當(dāng)ΔP＜0時(shí)，現(xiàn)場(chǎng)壓力偏低，則使轉(zhuǎn)速降低，ΔP減小。這樣不斷調(diào)整，使ΔP趨于0，現(xiàn)場(chǎng)實(shí)際壓力在設(shè)定壓力附近波動(dòng)，保證壓力穩(wěn)定。系統(tǒng)結(jié)構(gòu)如圖1。
LAM 4420 Etcher RF Switch Box 853-017163-001-?G-1997
LAM 4420 Etcher 16 Channel Heat/Cool PCB 810-17082-001 Rev.B working
LAM Research 715-140184-008-?E1 200mm End Effector Used Working
Lam Plate, Cool GDP 10 Hole 810-02433R
Lam Plate Focus Ring Adapter Cera-R 810-02432R
Lam Liner Extendedheated Ceramic 810-02460R
Mykrolis CMHT110232E Manometer 853-011053-002 LAM 4420 Used Working
Lam Research Gap Drive Amp Board 810-17013-001 Rev. D Used Working
Lam 4420 MKS 839-13510-1 Angle Valve Assembly 853-013575-002 working
LAM Research Gap Motor Controller Board 810-17018-002 Rev. H Used Working
LAM Research 810-17018-002 Gap Motor Controller Board Rev. G Used Working
Lam Research Tri-Convectron Assembly 853-01620-001-A?-C222 Used Working
Lam Research 4420 Tri-Convectron Assembly 853-01620-001 Rev. A Used Working
Mykrolis Lam 4420 Manometer CMHT-11S02 853-011054R-001?-E-ELM Used Working
Millipore Lam 4420 Manometer CMHT-11S02 853-011054R-001?-E-PCBELE Used Working
Millipore LAM 4420 CMHT-11S02-EMC Manometer 685-008451-011 Used Working
LAM Research Opto Input Board 28-8875-037 Rev. D New
LAM Research 715-011626-001 Cooling Lower Electrode Ring
Lam Research 4420 Control Module 853-017427-001-?C-C136 working
Lam 4420 Weldment Standoff Gas Feed 839-011516-001-?B Lot 713-011517-001
LAM Research 4420 Stepper Motor Driver Board 810-017016-1 Rev. B Working
LAM Research 715-12165-8 B 200mm End Effector Used Working
LAM Research 715-130080-008 200mm End Effector Rev. BC Used Working
LAM Research 715-130092-008 200mm End Effector Rev. 2 Used Working
LAM Research RF Switch Box Assembly 853-017163-101 Rev. 3 Working LAM 4420
LAM Research 4420 771-090453-001 Convectron Gauge, Tube Vacuum Gauges/L.L. Equip
LAM 4420 Left & Center RF Cover Plate 714-013218-001 Lot (4) 714-013219-001
LAM 4420 Heated Interconnect Manifold Assembly 853-013575-002 Working
Hitachi BBS210-2 12-Port PCB M-511E Lot of 2 Used Working
LAM Research Leveling Electrode 515-011835-001 new
Lam 4420 Lower Ring Clamp 716-011623-001 Rev.C working
Millipore Lam 4420 Throttle Valve MDVX-018S01 853-013541R-002?-C-ELM Used Working
Lam 4420 ADIO-AO PCB 810-17031-3 Rev. I Used Working
LAM Research Solenoid Interlock Board 810-17004-001 Rev. B Used Working
LAM Research 715-130080-008 200mm End Effector Rev. E Used Working
Mykrolis Lam Research 4420 Throttle Valve MDVX-100BS01 Used Working
Mykrolis MDVX-100BS11 Throttle Valve LAM Research 4420 Used Working
LAM Research 715-130080-008 200mm End Effector Rev. F Used Working
LAM Research 715-130092-008 200mm End Effector Rev. 2 New Surplus
LAM Research 853-012176-008 150mm End Effector New Surplus
Lam Cooling Electrode Ring 715-11626-001 new
LAM Research 810-017016-001 PCB Stepper Motor Driver Board Assembly New
Granville-Phill?ips 839-011237-001 Vacuum Gauge Weldment With Gauge 275185 Lot 4
LAM Research 853-017163-001-?G-262B RF Switch Box LAM 4420 Used Working
LAM Research 715-130092-008 200mm End Effector Rev. B Used Working
Millipore Lam 4420 Throttle Valve MDVX-018S01 839-013522-001 Rev. B Used Working
Millipore Lam 4420 Throttle Valve MDVX-018S01 839-013522-002 Used Working
LAM Research 4420 Stepper Motor Driver PCB 810-17016-001 Rev. D Used Working
LAM Research 4420 Stepper Motor Driver PCB 810-17016-001 Rev. C Used Working
Lam Research 4420 RF Switch Box 853-017163-001-?D-3710 Used Working
LAM Research 4420 Stepper Motor Driver PCB 810-17016-001 Rev. E Used Working
LAM Research 810-17031-3 ADIO-A0 Control Board Rev. 2 4420 Used Working
LAM Research 320665100 Timing Belt Lot of 4 New
Lam Integrated Circuit Clamp Ring Upper Electrode
Lam 4420 Lower End Reaction Chamber Plate 715-011035-001-?D working 715-11059-1
Lam Research 853-011117-001 Gap Heating Assembly Rev.B Watlow 010250C1 new
LAM Upper Match RF Cable 853-491940-001 New
Tylan General Capacitance Diaphragm Gauge CMLA-21 LAM 4420 853-017643-003 Rev. D
LAM Research Rear EMO Assembly 853-017162-583-?B-LEAN LAM 4420 working
LAM Research Rear EMO Assembly 853-017162-002 Rev. F Working LAM 4420
LAM Weldment Vacline Cooling Assembly 839-024453-100 Rev. D Working LAM 4420
LAM Research Front EMO Cover Assembly 853-034701-001 Rev. B Working LAM 4420
LAM Research 4420 839-013513-001 Weldment, Entrance L.L. Vacuum Manifold working
Millipore Capacitance Diaphragm Gauge CMLA-21 LAM 4420 853-017643-003 Rev. H
LAM Weldment He Line Manometer Adapter 839-029227-100 Rev. C Working LAM 4420
HPS Pneumatic Angle Valve 839-013510-1 Rev. A Working LAM 4420
LAM 180 Degree Loadlock Cover 713-011205-001 Rev. F Working LAM 4420
LAM Research 4420 Heated Chamber Manifold 853-013540-002 working
LAM 4420 Rainbow Etcher Indexer Cover Working
LAM 4420 Rainbow Etcher Shuttle Assembly Cover Working
LAM Research 4420 Loadlock Bottom View Assembly Parts 771-090453-001 working
Tylan Lam Research 4420 Manometer 853-017653-001-?A-MDFT CMLA-11S02 Used Working
Lam 4420 Temperature Sensor Board 810-017006-001 Rev.E working
Lam 4420 Temperature Sensor Board 810-17006-1 Rev.B working
Lam 4420 Gap Heating Assembly 853-011117-001 working
Lam Research Motor Driver Board 810-8566-1 Rev.D working
LAM Research 810-17004-001 Rev. F Solenoid Interlock Board LAM 4420 Used Working
AP Tech Lam 4420 Valve AP1001S 2PW Lot of 8 Used Working
Millipore CMLA-21-EMC Manometer 685-017643-003-?J used 839-029227-100-?C Lam 4420
Millipore Lam 4420 Manometer CMLA-21 839-029227-100 853-017643-003-?H-LEAN Used
Millipore Lam 4420 Manometer CMLA-21 839-029227-100 853-017643-003-?G-1135 Used
Tylan General Manometer CMLA-21 839-029227-100 853-017643-003-?D Used
Lam Research 4420 Convectron Tube Interface 810-017007-001 Rev. B Lot of 2 Used
LAM Research 4420 853-011053-503-?A-CHMFDR Manometer Sensor Assembly lot of 3
Lam Focus Ring (outer) 413-054-00-2-0 New
LAM Research 853-015130 Auto-Etch RF Match Unit As-Is
Lam Research 4420 90 Degree Load Lock Cover 713-11203-1 Rev. D Used Working
Lam Research 4420 Outer Gate Exit Safety Cover 713-013236-01 Lot of 3 Used
Lam Research 4420 Etcher Indexer Cover Used Working
Veriflo Lam 4420 Valve Assembly 839-029227-100-?B Used Working
Lam Research 4420 EMO Assembly 853-025901-001-?1-C136 Used Working
Tylan General Lam 4420 Manometer CMLA-21 853-017643-003-?G-1135 Used Working
Tylan General Lam 4420 Manometer CMLA-21 853-017643-003-?D-C222 Used Working
Tylan General Lam 4420 Manometer CMLA-21 853-017643-003-?D Used Working
Lam Research Alliance 9100 Pneumatic Hoist 13" Stroke
AP Tech Valve AP1001S Working 839-014929-800 Rev. D LAM 4420
AP Tech Valve AP1001S Working 839-014911-901 Rev. C LAM 4420
LAM Focus Ring 8" ESC 716-330190-081 New
Lam Research Vexta PH265M-31 Stepping Motor 853-015753-001 new
Lam Etcher 490 590 Motor PCB 474-1-C-677-385 055252
LAM Research Etcher Chem Sply Valve Block 766-020032-001 new
Lam Research Upper Baffle Plate 715-011902-001 new
Lam Etcher 490 590 Lam PCB 710-7930-1 Rev C
LAM 810-17041 PCB Brushless Motor Driver-Speed Control Board
Lam Research 740-0035-01 G8 Graphite Gasket pair new
LAM Mesh Switch 0577-1-L-807-07?87 working
LAM Research 4420 839-013514-001 Weldment, Exit Load Lock Vacuum Man. working
LAM Outer Gate Entrance Safety Cover 713-013220-001 Working LAM 4420
LAM Research 713-013236-001 Outer Gate Exit Safety Cover LAM 4420 Working
LAM 4420 Interconnect Coax RG216U Cable Assembly 853-017807-001R?ev. C Pair
LAM 4420 Manometer Cover Box 714-013234-001 Rev. C Working
LAM 4420 Weldment Entrance & Exit Line 839-024563-100 Pair 839-024561-100
LAM Research 4420 Upper Chamber Assembly Parts 839-011516-001 working
Lam 4420 16 Ch. Heat/Cool PCB 810-17002-001 Rev. B Used Working
Lam RF Cable Assy. 853-002900-010 new
Lam Etcher 490 590 PCB 055237 810-503-3 rev B
LAM Research 853-017423-002 RF COAX Cable Used
Lam Cover Elctd Hsgesc 811-02493R working
Lam Research 8" Focus Ring 716-330190-081 new
Lam Research 4420 Outer Gate Entrance Safety Cover 713-013220-001 Lot of 3 Used
Applied Ceramics LAM Research Bottom Ceramic Plate 716-028721-281 new
LAM Immersion Heater 678-099744-004 new
LAM Research 678-801542-001 Heat Tape New
LAM Immersion Heater 678-099744-006 new
LAM Research Immersion Heater 678-099744-005 new
Lam Clamp Ring Upper Electrode 715-140287-002 new
Lam Ring Hot Edge 15deg 716-140427-001 new
LAM Research Upper Baffle Plate 8" 715-028615-001 New
LAM PCB Comm. Board 28-8875-027
Lam 4420 839-011237-001-?D L.L. Gauge Vacuum Weldment Assembly lot of 2 working
Lam Research 4420 L.L. Gauge Vacuum Weldmount 839-011237-001-?A Lot of 2 Used
Plast-O-Matic Pneumatic Ball Valve .50 FNPT 766-001712-001 refurbished
LAM Research 017-018-0390 Etcher 490 590 PCB 055258
MKS Instruments 839-13521-1 Angle Valve LAM Research 100997144 no valve
LAM Immersion Heater 678-801541-003 new
LAM Immersion Heater 678-801541-002 new
LAM 6 Station Pneumatic Manifold 766-004254-003 new
LAM Transformer 638-099530-001 new
Hermos TLG-I1-AMAT-R1 Tranpsonder Reader Serial New
Sunx Safety Sensor Box SFI-AC Used Working
Showa Optronics HeNe Laser GLG5414 Not Working AS-IS
Fostec Nikon Illuminator Fiber Optic Cable 80952-0 Lot of 2 Used Working
Microscan Bar Code Reader FIS-0825-0103 Used Working
AFS Accu-Fab Systems RLM 10-11 I/O Module Used Working
Sunx Photoelectric Sensor and Input Modules SC-MIL SC-T8J FX-301B FT-WA8 Used
TEL Tokyo Electron 041249 Ion Gauge Vacuum Manifold Assembly 274012 Used
AMAT Optical Sensor Assy. 0190-03567 untested
Verity Instruments 1008540 Spectrometer SD1024E-CMP Used Working
Sunx Photoelectric Sensor CX-ND300R Lot of 10 Used Working
Migatron Corp. RPS-300-36-500M?T UltraSonic Proximity Sensor 73018-44 New
Toyo Sokki DLS-5028 Digital Load Cell Reader-Meter DC24V Working
Omron V700-HMD13A ID R/W Head AMAT 0190-10957 Lot of 3
HERMOS Transponder Reader TLG-RS232 I1-AMAT-R1 WORKING
Omron ZX-ED02T Inductive Proimity Sensor Head ZX-EDA11 working 0190-22646
Keyence Photoelectric Sensor Set FS-V1, PS-T2, PS-49C Used Working
Sunx Photoelectric Sensor NX5-M30AD, NX-M30A, NX5-M30P Lot of 3 New
Newport 744 Telecom Laser Diode Mount new
Mimir Optical Energy Controller 515 Used Working
Symbol Technologies LS40041-I100 Barcode Scanner lot of 9 working
Bio-Rad OFO501328 Microscope Objective 70/0.50 Quastor Q7 Used Working
Sti MC4216E-1-AC1-U?-10X-10R-ESD Light Curtain Controller Used Working
Sti OF4172B-2 Light Curtain Controller 42614-0720 working
Hamamatsu Photomultiplier Tube 4L991-092 H7608-01 Used Working
Hirakawa USP01275-6 Read Head Assembly 0190-31863 lot of 2 0190-31864 new
Optem International HF-165 Microscope Assembly 035370 Used Working
Showa Optronics GLS5410B Gas Laser Power Unit Used Working
Keyence Sensor Amplifier Block with sensor connectors PS-TO FS-RO 0090-01755 New
SunX SF1-S32 Fail-Safe Area Sensor Set Emitter SF1-S32D Receiver SF1-S32P Used
SUNX NA2-N20 Light Curtain Area Sensor Emitter NA2-20P Receiver NA2-20D Used
Sti MC4216-AC1 Light Curtain Controller Used Working
Sunx CX-RVM5 Photoelectric Sensor lot of 4 new
IDEC Corporation Ultrasonic Analog Distance Sensor SA6A-LK4S New
SunX SF1-SC Area Sensor Control Unit/Fail-Safe Lot of 4 Used Working
Hitachi SUNX FX7 S3-85134 Sensor and System New Surplus Lot of 4
Sensorik Sensors 3-825095 2-817089 SK SV Qty4 Hitachi
Asyst 9700-6584-01 Advan Tag RFID Reader ATR-9000 Rev. E Used Working
Setra 328GL3ADZNSAM3 Micro Pressure Transducer Sensor Display Lot of 18 New
Sunx SF1-AC1 Photoelectric Safety System Control Unit Used Working
Asyst 9700-6584-01 Advan Tag RFID Reader PB 90M Used Working
Migatron Corp. RPS-300 Ultrasonic Ranging Proximity Sensor RPS-300-36-500T new
Melles Griot 05-LHP-165 Laser
Brooks Automation TLG-RS232 Transponder Reader TLG-I1-AMAT-R1 Used
Lake Monitors M3B-6WB-02-L2 Water Flow Alarm Switch AMAT 1270-01579 Lot of 2
Myotoku CVR-6-H Pressure Sensor lot of 12 working
Banner CP12RC Fiber Optic Line Set SM312FV working BT16S
Keyence Sensor Controller HC-P1E New
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