Experts, please take a look and see if the installation diagram in the attachment is reasonable
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This installation diagram shows the method of installing low-pressure steam instruments above the pressure tapping point. In my opinion, this installation diagram is unreasonable. The connection method of the condenser tank in the diagram is quite unique; I wonder whether the condenser tank will still function with such a connection The red-marked parts have been modified by me; please share your valuable feedback.
It mainly depends on the installation location of the transmitter; if it is installed at a high position, it won’t work well
The transmitter is installed above the pressure tapping point.
Post the pictures to make it easier for everyone to participate.
If it is steam, the transmitter should be located below the pipeline, and the condensation tank as well, so that proper condensation can occur. Otherwise, the water in the condensation tank is prone to being affected by temperature changes, resulting in uneven levels of condensed water and inaccurate measurements
Installing the transmitter below the pressure tapping point is not feasible due to on-site constraints. Therefore, an installation method higher than the pressure tapping point is adopted. The key is the way the condensation tank is connected; I think it’s not reasonable.
I also lean towards your modification plan; it is closer to the commonly used methods in China and seems more reliable. Since the condenser needs to be filled with water before operation, the original connection should work fine.
It’s the first time I’ve seen a condensation tank connected in this way as well. Only one port is used for the inlet and outlet of the medium. The original image you mentioned can be used; I think that after it’s put into use, the water in the condensation tank will flow back into the pipeline through the tee joint, right?
Here’s how I think about it: before starting the system, the condenser and pipes (including the transmitter pressure tubes) are filled with water. Once the valves are opened, the water in the condenser and vertical pipes flows back into the steam pipes. However, the water in the transmitter pressure tubes does not flow out. Moreover, the tees for those pressure tubes are at the same level, and the pressure tubes should have a slope, so it should be possible to use them.
Yes, according to your analysis. It should work too. The slope should be indicated on the pipe where the tee connects to the transmitter in the diagram.
I’ve also never seen a condenser tank installed like this