Discussion on turbine quick-shut components
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I have a few questions for everyone. 1. In the quick-shut-off assembly, what is the purpose of using the cartridge valve DG16? If it isn’t used, can’t the quick-shut-off oil still be controlled by the 1842 valve? 2. Where does the secondary oil controlled by the electro-hydraulic converter come from? 3. What is the function of the wire that connects the electro-hydraulic converter to the cartridge valve? 4. What is the purpose of the lines inside the P05 prescription box?
Could someone please give some guidance? The diagram of the quick shutdown component is always a bit unclear in certain areas.
1. The function of the cartridge valve DG16 is to ensure that the pressure of the quick-shut oil is 0 during the process of establishing oil pressure by the start-up oil. Specifically, once oil pressure is generated at E1, this pressure is used to close the channels between E1 and E2 using the cartridge valve; at this point, since the quick-shut oil is connected to T via A of 1842, its pressure remains 0
1. The function of the cartridge valve DG16 is to ensure that the pressure of the quick-shut oil is 0 during the process of establishing oil pressure by the starting oil. Specifically, once oil pressure is generated at E1, this pressure is used to close the channels between E1 and E2 using the cartridge valve; at this point, since the quick-shut oil is connected to T via 1842, its pressure remains 0.
The last edit to this post was made by Desert Rogue_LMUI on 2020-2-10 at 10:53. 1. The function of the cartridge valve DG16 is to ensure that the pressure of the quick-shut oil is 0 during the process of establishing oil pressure with the start-up oil. Specifically, once oil pressure is generated at E1, this oil pressure keeps the cartridge valve closed, thereby blocking the channels between E1 and E2. At this point, since the A port of 1842 is connected to T, the pressure of the quick-shut oil is 0. 2. The oil supply line for the electro-hydraulic converter is the line mentioned in point 3. 3. P05 refers to the area where two pressure gauges are installed to measure the pressure of the secondary oil.
The secondary oil comes from the electro-hydraulic converter to the throttle valve
The structures of DG16 and DB40 should be different. The quick-shut oil coming from the emergency cut-off valve is divided into two paths; one of these paths supplies the 1842 unit, where normal P-A and B-T connections are used to establish the quick-shut oil flow ； The other route uses DG16 for the control of spring compression; the quick-shut oil is supplied to 1742 via DG16, where it is converted into secondary oil to control the throttle. I’m not sure if my understanding is correct; please discuss it.