330130-040-01-05

330130-040-01-05

330130-040-01-05

330130-040-01-05

风里雨里，我在仲鑫达等你------小苏

让我听见你的声音------0592-5856292++13394057292（微信同号） 

QQ：2851195480  网址：www.zxdsolutions.com

【仲鑫达庞大备品备件库存，停产控制系统零部件】

——————偏门的备品备件联系我们——————

——————冷门的备品备件联系我们——————

——————停产的备品备件联系我们——————

【自始至终，】

【创造低价，合作共赢】

【低价纵横，举世瞩目】

仲鑫达团队只做一件事为您的自动化机组和工业装置保驾护航！

仲鑫达庞大备品备件库存，停产控制系统零部件

-------------------------------------------------------------------

2 运行效果和问题

　　2003年DCS改造后，两套锅炉系统基本实现了炉况稳定条件下的自动控制。通过设置合适的炉排转速、鼓风转速、引风转速限幅值，基本保证了煤的充分燃烧，减少了环境污染．实现了工况稳定时整个锅炉系统的自动控制。同时由于引入燃烧周期的自适应调整’力Ⅱ快了负荷大幅变化时的响应速度。提高了系统控制的自动化程度。

　　但在运行期问，该厂发现该锅炉在负荷变化较大的工况下，控制过程中存在以下几个主要问题：锅炉汽包液位测量存在较大偏差；燃烧控制系统无法投自动。

　　3 问题分析与改进

　　3．1汽包液位控制改进

　　在锅炉汽包液位测量中，由于汽包液位系统是一个没有自平衡能力的被控对象。当供水量突然降低或出口蒸汽流量增大时。由于此时锅炉传给汽包的热量不变。致使液体大量汽化。

　　造成汽包液位测量结果偏大；当供水量突然增大或出口蒸汽流量减小时，情况相反，也就是我们常说的“汽包虚假液位”。而该锅炉在汽包液位检测回路的原设计方案中忽视了这个问题；直接影响了汽包液位控制的平稳

Coilcraft Fixed Inductors Air Core, 132-09SMG, SHIPSAMEDAY Z3

Coilcraft Fixed Inductors Air Core, 132-13SMJ, SHIPSAMEDAYY15

KEY INSTRUMENTS FLOWMETER 200 - 3000 CCM 

SMC gripper angular 180 degree, MHY2-20D, MHY220D, Shipsameday1327A2

VAT INLINE VALVE KF-16, 26524-KA11-0001/0548, NewNoBox 1546A4

Keyence Pressure Sensor APV85W, AP-V85W, Shipsameday W/2-3daysshipping1474Y

Insulation 3000 Degree F, Tubular Ceramic Insulator 1/2 ID X 3/4 OD

Gate Valve 1 NPT Female Type 316 SST, Mc-master Carr 4741K25

SWAGELOK 3-Way Ball Valve 1/4, SS-43GXS4-1466, SHIPSAMEDAYP17

VERIFLO Diaphragm Valve 955S4402M0T0FSEXHC, SHIPSAMEDAY 126A6

Siemens Contactor 3RT1035-1BB44 / 3RT1936-1ER00 / 3RT1936-1ER00, SHIPSAMEDY146H

Swagelok FLEXIBLE TUBING 3/8” X 27”, 321-6-X-27

Festo ANALOGUE MODULE, 526168, CPX-2AE-U-I, Shipsameday1636C2

SMC E/P Regulator 10VDC, IT2010-N32B, IT2010N32B, ShipSameDay1628E3

Linear IC OPAMP GP 7.2MHZ RRO 8SO, LT1677IS8PBF

Cable M18735-8080512, 5 Pins, X 95 LG, CAR3101A18-11SX

ABB Circuit Breaker Therm/MAG, 3P, SACE T1N 100, 100A, 1SDA061809R1

Pulse Encoder Cable 13805E01-GE16

Cable tie base adhesive SDM-101

SureServo low inertia AC brushless servo motor, SVL-201

Asco Coil 2428474, 174957-001, 206-409-1D, 120V/60FB

ABB Circuit Breaker TYPE AS with ROTARY HANDLE, 150A, 3P, UXAB 727131 R 127,

Delta Programmable Zone Controller IZU240, SHIPSAMEDAY W/2-3 DAYS 166G

Sunx Photoelectric Switch FT-R80-M5T, 0000-0029-95V, Shipsameday1629N4

Siemens FC/GBd Ethernet 850nm V23826-K305-C63, V23826K305C63, 1176R1

MDC VACUUM ADAPTER 2.75 CF x 3/4 TUBE, SWG75-275, Shipsameday156AD

BECKHOFF Link Extension Module, IP3202 B520-0000, Shipsameday1615C6

240 SET SWAGLOK Ferrule set 1/4, B-400-SET, B-600-SET, B-810-SET, ZM11

Fujikin KG8P7000 & G7MT000, Type N.C. 0.P 0.39-0.59, SHIPSAMEDAY 1647E

Fine Sodick Circuit Board DIF-03A, PC 4181369, SHIPSAMEDAY 1128Q4

Coilcraft 1812PS-823KLB, Fixed Inductors 1812PS 

Coilcraft 0402CS-1N9XJLW, Fixed Inductors 0402CS 

HI1608-1C18NJNT,  SHIPSAMEDAY S27

Coilcraft 0805HT-6N8TJLB, Fixed Inductors 0805HT Low Profile 6.S28

Vishay WSL1206R0250FEA, Current Sense Resistors - SMD 1/4watt S29

Parker Kuroda Solenoid PCS241B-NB-D24SP & PCL241B-NB-D24SP, SHIPSAMEDDAY154D2

Parker Kuroda Solenoid PCS241B-NB-D24SP & PCL241B-NB-D24SP, SHIPSAMEDDAY154D3

Balance Data Aquistion BMDA210X10, BMDA210

0805X7RHT102K, Capacitor, Ceramic, 1nf, 50V, 10±%, X7R, N71

Festo Electric Valve Terminal CPV-14, CPV14-GE-FB-6, 18261, SHIPSAMEDAY 1628Z2

Fixed Inductors 1812SMS Midi Spring 22nH 5% 3A, 1812SMS-22NJLC Z19

PORCELAIN CAPACITOR CS12010T0200GBK

Swagelok Quick Connect Stem ” Npt, SS-QC8-D-8PM, SHIPSAMEDAY1327B9

BIG LOT MICROSEAL MSA-028-211, MSA-028-311, MSA-028-111-M, 3500-00083 1636C1

Swagelok Low Flow Metering Valve 1/8, SS-SS2-VH, Shipsameday 1326B7

Koganei Block Pneumatic F10M5NJ, F10T1-CPS, Shipsameday 1540C8