Pure machine hydraulic opc system for turbine regulating control system
A technology for regulating control and turbines, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve problems such as steam pressure loss
Active Publication Date: 2020-05-05
SHANGHAI MARINE EQUIP RES INST
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Problems solved by technology
[0011] The problem to be solved by the present invention: for steam turbines, generally due to the need to retain the mechanical (hydraulic) overspeed protection function, an additional main steam valve is provided before the regulating valve, thereby causing the problem of steam pressure loss, and an inventive turbine regulating control system is provided Use the pure machine-hydraulic OPC system, that is, realize the forced quick-closing control valve in a pure machine-hydraulic way, so that the control valve can also have the function of the main valve, so as to achieve the purpose of canceling the main valve or adding a protective function in the design
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] Such as figure 1 , As shown in 2, a pure mechanical fluid OPC system for turbine regulation control system, including DEH system 10, mechanical overspeed system 11 for main valve speed closing, and oil supply system 12. The emergency blocking oil circuit of the mechanical overspeed system 11 used for quick closing of the main valve is connected to the DEH system 10 through a diaphragm valve or a mechanical reversing valve 13 plus a manual solenoid valve 10-3.
[0024] Such as figure 1 As shown, the original DEH system 10 of the turbogenerator is mainly composed of a servo valve 10-1, an oil motor 10-4, two cartridge valves 10-2 and a manual solenoid valve 10-3. The opening and closing of each channel of the servo valve 10-1 is controlled by the speed signal of the unit, so as to realize the dynamic adjustment of the speed of the unit. The accu...
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The invention relates to a pure mechano-hydraulic type OPC system for a turbine motor regulation control system. The pure mechano-hydraulic type OPC system comprises a DEH system and a mechanical overspeed system which is used for quickly closing a main throttle valve. An emergency trip oil channel of the mechanical overspeed system used for quickly closing the main throttle valve is connected with the DEH system through a diaphragm valve or a mechanical reversing valve and a manual electromagnetic valve, and the function that a pure mechano-hydraulic type trigger regulation valve can be quickly closed without affecting normal operation of the DEH system is achieved. According to the pure mechano-hydraulic type OPC system for the turbine motor regulation control system, the pure mechano-hydraulic mode is used for achieving forced fast closing of the regulation valve, the regulation valve can achieve the functions of the main throttle valve, and thus the purpose of optionally cancelingthe main throttle valve or increasing one more protection in design is achieved.
Description
technical field [0001] The invention relates to a turbine regulation control system, in particular to a control system that realizes regulation through OPC action. Background technique [0002] Turbine generally refers to impeller machinery. A steam turbine is a type of turbine, and its typical application is that the steam turbine drives a generator, that is, a turbogenerator set. Take the steam turbine generator set as an example. [0003] Power generation steam turbines are generally equipped with two types of typical valves, namely the main steam valve and the regulating valve. The main steam valve is mainly used to realize the switch control of the main steam, and the regulating valve is mainly used to realize the control of the speed and load by adjusting the amount of steam intake. [0004] There are two types of overspeed tests for turbogenerator sets, one is mechanical overspeed and the other is electrical overspeed. Mechanical overspeed is achieved by releasing...
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IPC IPC(8): F01D17/26F01D17/20F01D17/10F01D21/02
CPCF01D17/10F01D17/20F01D17/26F01D21/02
Inventor 周振东高怡秋李典来周琴杜晓东
Owner SHANGHAI MARINE EQUIP RES INST