IC697ALG444
故障率高，维护工作量大。但当转炉热值满足之后，又会产生锅炉本体的温度不能马上降下来，此时锅炉的给水量又根据锅炉蒸汽流量的变小而急剧变小，这时又产生了锅炉的本体温度下降缓慢的延迟过程，使得锅炉的汽包水位急剧下降，汽包水位中的蒸汽含量太大，容易造成破坏部分水冷壁的水循环，引起水冷壁局部过热而损坏，严重时会发生锅炉爆炸。余热发电车间的几种不同方式的水位测量方法不能统一一致、差别大，使得操作工和维护工程师有时无法操作和维护，给生产和安全带来了极大的隐患。大冶有色冶炼厂余热发电车间主要采用以下三种方式来测量汽包液位进行远传，均不能有效的解决现场实际生产中锅炉汽包水位满足生产的过程。 _________________________________________ 〖厦门光沃自动化设备有限公司 竭诚为您服务〗 〖联系人：欧先生 〗 〖手机：18030229053(微信同号) 〗 〖QQ: 2479261344 〗 〖传真：0592-5709825 【价格】如此低价,仅此一家 【货期】大量现货,下单后即可发货 【质量】全新原装,进口*** 【保障】产品经过专业检测，质保一年,15天包退换 【品牌】Allen-Bradley罗克韦尔、ABB、本特利Bently 3500系统卡件、GE、艾默生西屋等模块卡件 ______________________________________________
2.1电接点液位计主要问题是电接点在长期使用过程中，易受腐蚀和结构现象，主要原因是在转炉投运期间，锅炉的蒸汽加热需求量特别大，瞬间锅炉的给水调节阀开度较大，致使给水流量非常大；但锅炉的温度瞬间增大反应较慢，这时容易产生汽水分离效果不佳的情况，特别容易造成误动作，形成虚假水位，现场控制室的操作人员也不明白到底哪个是准确的水位。 2.2差压变送器主要问题是差压变送器离锅炉较近，双室平衡器的冷凝效果不佳，此种液位测量方式采用的是间接的物理量压力差方式测量，特别容易受锅炉汽包内压力和蒸汽量变化影响，而且经常需要校正零点和量程，在生产过程中极其不方便，且维护工作量太多，所以此种测量方式的不确定因素和工作量都不能满足生产和安全需求。 2.3电容式液位计主要问题是电容式液位计在使用过程中，电容测量极板容易受水质结构影响，且锅炉在运行过程中，蒸汽量和温度及压力随转炉生产的变化时刻都是变化的，且水和汽的混合体的介电常数也是时刻变化的，采用人工补偿的方式不能从根本上消除，非常容易造成虚假水位现象。另外电容式液位计的工作周期很长，实际工作周期大于0.5S，而锅炉水位在随转炉生产过程中的变化周期非常快，周期远小于0.5S，所以电容式液位计从根本上不能跟随锅炉水位变化，非常容易产生虚假水位和误动作，所以此种测量方式的弊端也不能满足生产和安全需求。 IC697ALG444
IC697ALG444
IC697ALG444
Woodward5464-688Linknet Controller Module Woodward5464-697CPU Module Woodward5464-716ASIO Card (Version 4.6) Woodward5464-725replaced by 5437-523 Woodward5464-726replaced by 5437-524 Woodward5464-727replace by 5437-419 or 5437-687 Woodward5464-768CPU - DCS II Woodward5464-827CPU MODULE Woodward5464-828 Woodward5464-829 Woodward5464-830A/I 4-20 Woodward5464-8334 ch Woodward5464-834 Woodward5464-836REMOTE XCVR Woodward5464-843NetCon CPU Card Woodward5466-0064-20mA Input Woodward5466-0172 CH ACTUATOR DRIVER Woodward5466-026DUPLEX CUR IN Woodward5466-031Netcon I/O Controller????? Woodward5466-032FTIO MODULE Woodward5466-033CPU Module Woodward5466-0412C Pos Control Woodward5466-042CPU (GAP Compatible) - DCS Woodward5466-061Module Master CPU Woodward5466-063NetCon CPU Card Woodward5466-074CPU Mod Woodward5466-250netcon B FTIO Woodward5466-253MPU A I/O Woodward5466-258NetCon/MicroNet Discreet I/O Card 24/12 Woodward5466-268 Woodward5466-272Solnd Mon Woodward5466-274FTIO Woodward5466-315NetCon/MicroNet Analog I/O Card Woodward5466-316MPU A I/O Woodward5466-332ANALOG I/O 24/8 Woodward5466-336SIO Woodward5466-340Netcon F/O XCVR Woodward5466-348Netcon 5000B SIO Woodward5466-351Netcon CPU 040 with LLC Memory Woodward5466-352CPU Module Woodward5466-353MAIN XCVR Woodward5466-355REMOTE XCVR Woodward5466-409NetCon/MicroNet CPU Card Woodward5466-411Ethernet Module (RJ45) Woodward5466-419NT CPU Woodward5466-42524/8A I/O Woodward5466-458 Woodward5500-018 Woodward5500-134Ext. Card Woodward5500-159C505 Relay Board Woodward5500-510 Woodward5500-559Buffer Board Woodward5500-563 Woodward5501-003Circuit Board for Peak 150 Woodward5501-340 Woodward5501-341 Woodward5501-367FTM (Field Termination) Woodward5501-376FTM, ANALOG, HI DENS Woodward5501-411 Woodward5501-4282 CH ACTUATOR DRIVER Woodward5501-4322 CH ACTUATOR DRIVER Woodward5501-465 Woodward5501-466MicroNet Power Supply Woodward5501-469CPU LM6000 PC & PA Woodward5501-470CPU_040 W/O LL?Memory?? Woodward5501-471NetCon/MicroNet SIO Card Woodward5501-510FT Relay Woodward5503-173MicroNet VME CPU Adapter Woodward5503-279TC/RTD Woodward5503-282FTM, analog Woodward5503-335CPU Woodward6945-3773103 Gas Fuel Valve Woodward8200-015Peak 150 (HVAC - No ModBus) Woodward8200-019PEAK 150 Woodward8200-177DRIVER, EM DIGITAL/ANALOG Woodward8200-203ProTech 203 Woodward8200-226SPC (servo position controller) Woodward8200-314GS/LQ Digital Driver Woodward8220-805Final Driver Woodward8226-043OCP (operator control panel) Woodward8230-568Control Panel Woodward8230-805FINAL DRVR Woodward8230-815HP Final Drive Woodward8230-827LP Final Driver Woodward8230-840 Woodward8230-841 Woodward8230-896Final Driver - Water Woodward8230-898FINAL DRVR Woodward8234-167O501 Chassie Woodward8234-213Chassis - NetCon A Woodward8234-346A501 Chassie Woodward8236-026 Woodward8236-027Operate Control Panel Woodward8236-039OCP (operator control panel) Woodward8236-039OCP (operator control panel) Woodward8236-043Interface 43027 Woodward8236-144Light Panel Woodward8236-144DLight Panel Woodward8238-002505E Bulkhead Woodward8238-007505 Bulkhead Woodward8238-008505 Flush Mount Woodward8238-009505E Bulkhead Woodward8239-001DSM Synchronizer Woodward8239-002DSM Synchronizer Woodward8239-005DRFD Woodward8239-006Digital Remote Final Driver Woodward8239-007Digital Remote Final Driver Woodward8239-008Digital Remote Final Driver Woodward8239-015Digital Remote Final Driver Woodward8239-016DRFD CONTROL ASSEMBLY Woodward8239-939 Woodward8240-084EGB10C governor Woodward8250-022remote servo Woodward8250-226EG10P p/n A8250-226 Woodward8250-421EG3P oil motor Woodward8250-501actuator Woodward8250-570 Woodward8250-807TA-20 Actuator Woodward8250-818Governor Woodward8256-021EPG Actuator Woodward8270-092EG-A Control Box Woodward8270-1222301 Power Supply, p/n Woodward8270-201 Woodward8270-741MOTOR OPERATED POTENTIOMETER Woodward8270-7582301 SIGNAL CONVERTER Woodward8270-7682301 AMPLIFIER Woodward8271-147Load Sensor Woodward8271-4672301 Load Share and Speed Control Woodward8271-4722301 Load Sharing & Speed Control Woodward8271-6522301 Load Share and Speed Control Woodward8271-674Power Supplies Woodward8271-872Import/Export Control Woodward8272-385SPM Synchronizer Woodward8272-394Real Power Sensor Woodward8272-447Motor Operated Pot Woodward8272-464 Woodward8272-684 Woodward8272-684 Woodward8272-695Real Power Sensor Woodward8272-720Real Power Sensor Woodward8272-781AReal Power Sensor Woodward8273-041ATLAS SC Woodward8273-276377A7823P001,Atlas PC 2x4 Sc w/act,LV Woodward8280-071Hydraulic Pump Woodward8280-415Digital Speed Control Woodward8280-505723 Plus Woodward8290-195Flo-Tech Speed Control Woodward8291-020EHPC Woodward8301-633MicroNet Woodward8405-020 Woodward8406-113EGCP-3 DIGITAL CONTROL Woodward8406-121EGCP-2 Woodward8434-246Main Chassises w/ LED & P.B Woodward8512-135 Woodward8516-038 Woodward8516-039TG 13 Woodward8516-0424000 RPM CCW Woodward8516-051TG-13E, 4000 RPM, CCW MS CONN Woodward8516-068TG-13E Actuator, Pressure Drive Woodward8516-076TG-13A Woodward8570-412PG Dial Governor, p/n C8570-412 Woodward8575-241 Woodward8575-377 Woodward8580-064Tachometer CIT Sensor Woodward8580-069On Engine Gearbox Hydraulic Pump for Metering Valves Woodward8580-071Engine Gearbox Hydraulic Pump Woodward8580-085Engine Gearbox Hydraulic Pump Woodward8580-086Hydraulic Pump Woodward8900-067Sensor Woodward8901-457CPC Woodward8901-881Fuel/Water Valve Woodward8904-289Valve Woodward8904-484Gas Shutoff Valve with Suppression Woodward8904-773Control 8904-881,9902-002 Woodward8915-0041907 Liquid valve with TM-55 Actuator Woodward8915-0053103 Gas Valve with TM-55 Actuator Woodward8915-011Control Valve-TM55P/3103 Low Temp Gas Fuel Woodward8915-024Liquid Fuel Valve Woodward8915-046Control Valve-TM55P/1907 Liq Woodward8915-075Control Valve-TM40LP/3151A Water Woodward8915-094Control Valve-TM55P/3103 High Temp Gas Fuel Woodward8915-103Control Valve-TM40/Liquid LP Woodward8915-111 Woodward8915-11463103/EM35 GAS VALVE Woodward8915-118 Woodward8915-123Control Valve-Gas Fuel TM55P/3103 Hi Temp 1" Port Woodward8915-385Control Valve-Liq Fuel TM55P Woodward8915-4293151 Valve w/ TM 40 LP actuator Woodward8915-526Fuel/Water Valve Woodward8915-652Control Valve-TM55P/1907 Lg Liquid Woodward8915-7123103/TM55P CSA 1” Gas Valve & actauator assy. Woodward8915-755Control Valve-TM55P/3103 Hi Temp Gas Fuel 2" Port Woodward8915-775Control Valve-TM40/3151A Water Woodward8915-7823151A/TM40 Water Injection Valve/Act Woodward8915-861Fuel/Water Valve Woodward8915-877Control Valve-Liq Fuel TM55P/1907 Lg Liquid Woodward8915-880EM35 A9907-105, Woodward8915-883 Woodward8915-886Gas Fuel Valve Woodward8915-8873103/tm55 Woodward8915-9483151A/TM40 Water Injection Valve/Act Woodward8915-9533103/EM35 GAS VALVE Woodward8915-9553103/EM35MR CSA 2” Gas Valve & actuator assy Woodward8915-9783171A/EM35MR GAS VALVE W/DUAL RESOLVER. Woodward8915-986 Woodward8923-811Kit-Read only Ladder Logic V1.Control
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