The advantages of Siemens smart valve positioner
Summary content: the application of Siemens intelligent valve positioner in engineering practice, the realization of the control of the regulating valve, regulating valve control valve positioner. Valve positioner, the choice of will directly affect the overall performance of the regulating valve control system and quality. Choose intelligent valve positioner, to improve the overall control valve performance, control the overall enhance.
In petrochemical engineering design practice, we can choose a variety of systems and more testing control instrument, to implement the control of the process, to achieve the effect of requirements. The realization of the control system consists of three parts: detection, controller, adjusting unit. Among them, the adjustment of the most key unit is the regulator. The valve positioner is one of the most important accessories valve, valve positioner is the regulator of the brain and soul.
With engineering design practice and international standards, the common valve locator is increasingly difficult to meet the requirements of engineering design and practice. Especially in the advanced intelligent control and optimization control scheme emerge in endlessly, the design principle of the intelligent become necessary requirements. From the realization of control system on the basis of integration and the economic efficiency maximization, more and more project, select the intelligent valve positioner.
The advantages of smart valve positioner
❶ improve regulating valve and control system: intelligent valve positioner of the control accuracy is high, can realize the accurate control of regulating valve, so as to improve the level of system control. Siemens PS2 series smart valve positioner can be more convenient to set specific curve of the valve.
❷ save gas, save energy consumption and costs: we demand constantly in line with international standards, but the international famous big petrochemical company has a good cost control, and we have certain gap with the world advanced level, small, do not calculate calculator project. Instrument, for example, domestic locator, and some functions of the locator manufacturers, due to technical reasons, gas consumption per hour is very big, in general, the products of steady state gas consumption in 350 l/h. Function of Siemens PS2 valve positioner steady-state 36 litres of gas consumption/hour. Considering all kinds of cost, a Siemens smart valve positioner can save a lot of spending at least a year.
❸ save gas, maintain the stability of public pressure: for large-scale petrochemical enterprises, as many locations, gas consumption is very big, to the end of the device or out of the air compressor station, instrument air pressure is low, advantage can't even drive the regulator to work properly, can meet the normal production safety device. If using low consumption of intelligent valve positioner, the total gas consumption is reduced, and the maintain wind instrument public pressure stability, guarantee safe production of the plant.
❹ initialization domestic simple: Siemens PS2 series intelligent valve positioner just four buttons to set a few simple parameters, automatically complete the initialization process. Can be downloaded locator bulk copy to the same conditions, greatly saves manpower and time.
❺ intelligent communication mode: Siemens intelligent valve positioner is the most obvious characteristics of intelligent communication. In petrochemical enterprises use a lot of Siemens PS2 intelligent valve positioner is not only support the commonly used communication protocols, AMS and communication.
❻ binary input, the interlock switch valve: the intelligent valve positioner, mostly with self-preservation interlock function. Siemens PS2 series intelligent valve positioner in the period of the signal can be self-locking switch valve or an requirement.
❼ convenient set points to adjust: cheng, according to the actual needs in the engineering design requirements with an output signal to control two or more regulator, which requires the valve positioner only to a certain range and response of the input signal. Siemens intelligent valve positioner PS2 can easily manually or via software set points and adjust the starting point and end point.
❽ rich fault diagnosis function: fault diagnosis is the function of the intelligent valve positioner is very important. Diagnosis for intelligent positioner valve leak amount, valve packing, valve wear and so on.