A Simulation Modeling Method for Steam Turbine Control Valve Stroke
A simulation modeling and regulating valve technology, applied in design optimization/simulation, mechanical equipment, engine components, etc., can solve problems that are difficult to meet and do not have the simulation function of regulating valve travel
Active Publication Date: 2022-02-08
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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Problems solved by technology
Because the characteristic curve of the control valve is often missing on site, the simulation modeling of conventional steam turbines and thermal systems usually does not have the simulation function of the control valve stroke, which is difficult to meet the current basic information requirements for improving the operating flexibility and economical efficiency of thermal power steam turbine units for the control valve stroke. actual needs
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Embodiment Construction
[0037] A method for simulating and modeling the stroke of a steam turbine regulating valve according to an embodiment of the present invention includes the following steps:
[0038] Step 1: On the basis of the primary modeling of the conventional steam turbine and thermal system, set up the main steam valve module and the regulating valve module, which are responsible for the relevant calculations of the main steam valve and the regulating valve respectively.
[0039] like figure 1 As shown in the figure, this embodiment realizes the thermal system of the one-time modeling of the unit, including a steam turbine body, a steam distribution mechanism, three high-pressure heaters, a deaerator, four low-pressure heaters, a steam-driven feed water pump group, a superheater, and a reheater. Condensers, condensers, generators and condensate pumps, etc.
[0040] The steam turbine body includes a high pressure cylinder, a medium pressure cylinder and a low pressure cylinder.
[0041] Th...
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A steam turbine control valve stroke simulation modeling method, the method combines the on-site steam turbine flow characteristic test with simulation modeling, through the first and second step modeling, the main steam valve module and the control valve module are set, and the acquisition follows the on-site The actual characteristic curve of the regulating valve; the characteristic curve of the regulating valve is built into the original regulating valve module, and the function of calculating the stroke of the regulating valve is added to realize the known flow rate G Ask for itinerary L or known itinerary L Calculation of the flow rate G and other simulation applications involving the stroke of the steam turbine control valve. It can provide a reference for the simulation research of variable load thermal economic characteristics, variable pressure thermal economic characteristics and flow characteristics of steam turbine units with different steam distribution methods.
Description
technical field [0001] The invention relates to a simulation modeling method for the stroke of a steam turbine regulating valve, and belongs to the technical field of steam turbine operation. Background technique [0002] Steam turbine and thermal system simulation refers to the thermal performance state simulation of steam turbine and thermal system under different loads, different equipment states, and different system topologies. Due to the compositional characteristics of my country's power system, the thermal power generation steam turbine is not only the prime mover for establishing and maintaining the power grid cycle and energy balance, but also the main unit responsible for power supply and power grid peaking and frequency regulation in the medium and long term in my country's power market. Under the industry background of the deepening of electricity market reform, the increasing number of volatile renewable energy sources, and the more intensified contradiction be...
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IPC IPC(8): F01D17/14F01D21/00F01D25/00G06F30/20
CPCF01D17/145F01D21/003F01D25/00
Inventor 万忠海陈文蔡文鲁锦晏涛吴杨辉王小波
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST