这些因素,加上操作限制和挑战,要求过热器和再热器中冷却水喷射阀等关键部件具有高性能和可靠性。喷射阀的功能是将过热蒸汽冷却至佳涡轮入口温度。YT204001-BH YPM105A 诸如开关频率限制之类的缺陷会导致输送的冷却水量的显著变化,从而影响过热蒸汽的温度。因此,植物采取控制措施来调节温度,使峰值在规定范围内。YT204001-BH YPM105A 这些措施的主要目的是保护过热器、汽轮机和二次设备部件免受过载。然而,这种安全性是以涡轮效率降低为代价的,涡轮进口温度每降低1°C,涡轮效率就降低0.05%。这意味着,过热蒸汽温度与佳汽轮机入口温度的平均偏差仅为20°C,效率将降低1%。尽管这些降低的效率可能导致重大的经济损失,但许多发电厂仍在不知不觉中使用具有有限工作循环的电动执行器,例如根据EN IEC 60034 1规范的S4-25%工作循环或S5-25%工作循环。工厂工程师和操作员通常不知道工作类型规范适用于20°C的中等环境温度。-我们保留对本文件内容进行技术更改或修改的权利,恕不另行通知。关于采购订单,应以商定的细节为准。ABB对本文件中的潜在错误或信息缺失不承担任何责任。我们保留本文件以及其中包含的主题和插图的所有权利。未经ABB事先书面同意,禁止复制、向第三方披露或使用其全部或部分内容。版权所有©2018 ABB保留所有权利3KDE010066R3001。
Invensys Foxboro:
I / A Series System, FBM Sequence Control, Ladder Logic Control, Incident Recall Processing, D / A Conversion, I / O Signal Processing, Data Communication and Processing.
Invensys Triconex:
Redundant Fault-Tolerant Control System, the most modern fault-tolerant controller based on Triple Modular Redundancy (TMR) architecture.
Westinghouse (Westinghouse):
OVATION system, WDPF system, WEStation system spare parts.
Rockwell Allen-Bradley:
Reliance Ryan, SLC500 / 1747/1746, MicroLogix / 1761/1763/1762/1766/1764, CompactLogix / 1769/1768, Logix5000 / 1756/1789/1794/1760/1788, PLC-5/1771/1785 PLC CPU, etc. .
Schneider Modicon:
Quantum 140 series processors, control cards, power modules, and more.
ABB: DSQC series for industrial robots, Bailey INFI 90 and more.
Siemens servo control system:
Siemens MOORE, Siemens Simatic C1, 6SN1118, 6ES7416, 6FC5103, 6SN1123, 6RB2026, 6SC6100, 6SN1145, 6S6111, 6SC6101 Siemens S5 These series
Motorola (Motorola):
MVME 162, MVME 167, MVME1772, MVME177 and other series.
XYCOM: I / O, VME board and processor.
GE FANUC (GE Fanuc):
modules, cards, drives and other spare parts.
Yaskawa (Yasukawa):
servo controller, servo motor, servo drive.
Bosch Rexroth servo control system:
Indramat Motor MAC, DCK04.3, Bosch Versorgungs.I / O modules, PLC controllers, drive modules and more.
Woodward:
SPC valve position controller, PEAK150 digital controller.








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