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2018-11-17View Original

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The thick solid line in the diagram represents the main material pipeline; why are blind flanges installed at the inlet and outlet of the liquid separation tank? Can I skip it? When can the lowest sewage pipeline be opened? Do both valves have the function of a pressure regulator? The pressure inside the tank is so high when it’s opened – could an accident occur?
Reply #22018-11-17
The thick solid line in the diagram represents the main material pipeline; why are blind flanges installed at the inlet and outlet of the liquid separation tank? It’s an eight-port blind plate – one side is conductive while the other side is completely isolated. Can I skip it? When can the lowest sewage pipeline be opened? Do both valves have the function of a pressure regulator? The two valves are there to prevent leakage from one valve, not to reduce pressure. The drain valve is used to discharge liquid. The pressure inside the tank is so high when it’s opened – could an accident occur?
Reply #32018-11-18
Just starting in this field? A device has many operating conditions, and the procedures for operating it vary depending on these conditions. For example, this tank appears to be a fuel gas separation tank; therefore, when maintaining this tank, it is necessary to disconnect it from the piping system. Since the valves are not reliable, it is essential to use 8-shaped blind plates. The water used for maintenance, cleaning, or purging inside the tank needs to be drained, so a drain outlet is required. When the tank needs to be taken out of service online, pressure must be released – there should be a flare system for the gas phase and a proper drainage system for the liquid phase. These are all standard practices. If you are a beginner, it’s better to carry out such work under the supervision of an experienced person
Reply #42019-02-26
As can be seen from the diagram, the liquid separation tank operates intermittently, or at least it has maintenance periods during which it needs to be isolated. During the maintenance of the liquid separation tank, it is isolated, and then the liquid is drained through the bottom discharge valve
Reply #52019-02-26
Safety considerations. It is related to the type of fluid in the pipeline, to prevent leaks inside the valve
Reply #62019-02-27
This is an 8-character blind flange; under normal circumstances it is used for installing the main material pipeline, and it is only sealed off during maintenance or in special situations.

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