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模拟量控制
调节控制
模块控制
调节型控制
It performs the monitoring and control by acquiring the field data and the major parameters such as level, flow, pressure, motor operation and valve status, achieving the production process status monitoring, production operation, process control, event alarm, operation interlocking, safety protection and the system functions such as data acquisition (DAS), modulating control system (MCS), sequence control system (SCS) and interlock protection (PRO), setting of process parameters, fault alarm prompt, print-out of production reports and etc.
Distributed control system (DCS) will be used for unit monitoring, including data acquisition system (DAS), modulating control system (MCS), sequence control system (SCS) and furnace safety supervision system (FSSS). Automatic regulation system is designed as whole-course automatic regulation, except for combustion regulation that will automatically input when exceeding minimum stable load; sequence control system is designed as per functional group, subfunctional group, etc.
阀门说明The startup feedwater control valve (SFCV) is a 6-inch air-operated modulating control valve. The valve is normally closed, fails closed, and is located upstream of the startup feedwater isolation valve (SFIV) and startup feedwater check valve in the safety-related portion of the startup feedwater line. The valve body is a globe design employing a custom trim to provide the required range of startup feed control as well as positive isolation independent of the control surfaces. Valves of this type have been proven in similar service in previous LWRs and in fossil plant boiler feed applications. Seats and trim are of a proven erosion resistant material, such as hardened 400 series stainless steel. The design is such that seats and other wearing parts can be easily removed and replaced.
This philosophy has now been applied to a new range designed specifically for the exacting demands of process control, specfically continuous modulating control valve applications.
这一理念针对过程控制的严格要求,特别是连续模块控制阀门应用,已被应用到新系列设计中。
Process interface: Interface to the process shall be through distributed microprocessor based controllers (Control Modules). Each controller shall be a stand-alone unit capable of performing full data acquisition and control of the process via I/O interface hardware. The controller shall be able to do process control (on-off control and modulating control) and integrated with Boiler Protection System (BPS) and Burner Management System (BMS) in the same controller with maximum 50 ms cycle time.
TA Series TCM- designed for modulating control or on-off
TA TCM 系列 - 设计用于调节控制或开关
16.1.4.2 For the project in this phase, one distributed control system (DCS) is provided for each unit, and one common DCS for the common system in the main power building. Boiler soot-blowing system and slag removal system are to be controlled through DCS as well. DCS functions, such as Data Acquisition system (DAS), Modulating Control System (MCS), Sequence Control System (SCS, of boiler, turbine, generator-transformer unit and HV & LV power supply for the plant), Furnace Safeguard Supervisory System(FSSS), and turbine Bypass Control System(BPC), are considered.
The unit plant takes the DCS as its core of monitoring and control, and depends on DCS to perform such functions as Data Acquisition System (DAS), Modulating Control System (MCS), Sequence Control System (SCS) and Furnace Safety Supervision System (FSSS) and boiler soot blowing control.
TA Series 7MP Pressure Independent Balancing and Modulating Control Valve
TA 7MP系列压力独立平衡调节控制阀
Pressure independent balancing and control valve for modulating control
调节型控制的压差无关型平衡控制阀
Pressure independent balancing and control valve for modulating control
结合了压差控制、平衡和控制阀
Uniquely shaped EQM, best suited for modulating control.
线性,最适合开关型控制。
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