Overheated steam pipes require a steam trap, don’t they?
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For example, for a 40-kilogram, 430-degree steam pipe, is it better to install a valve for drainage or a dedicated drain valve? Since normal operation of the boiler involves steam with a very high superheat level (180 degrees of superheat, ranging from a saturation temperature of 250 degrees to 430 degrees), the drain valve can usually be turned off; it is only activated when starting up or stopping the boiler or when steam supply is interrupted. Can we avoid installing a steam trap this way?
We install manual valves for drainage, and close them tightly after starting the machine.
It is recommended to use a manual valve for control; water will only be present when steam is first introduced to warm the pipes, and no water is generated during normal operation. Installing a drain valve would be a waste.
For installation, simply use manual dehydration via valves; during normal operation, condensate can be drained into the water tank through the collection pipe at low levels
Agree with the opinion from the 3rd floor; this is what power plants generally do
We installed it, but it’s not needed at all in actual production. It’s more of a way to meet inspection requirements and give the impression that there are no hidden problems; it doesn’t have much practical significance
Either method works; there is no essential difference. A steam trap is used to replace manual water drainage. Given that there is almost no condensate water during normal operation of the superheated steam in your plant, it is possible to consider installing two drain valves, one at the beginning and one at the end. In the case of end leakage, the valve at the root can be closed and replaced. Hope it will be adopted.
Either method works; there is no essential difference. A steam trap is used to replace manual water drainage. Given that there is almost no condensate water during normal operation of the superheated steam in your plant, it is possible to consider installing two drain valves, one at the beginning and one at the end. In the case of end leakage, the valve at the root can be closed and replaced. Hope it will be adopted.
This post was last edited by Pingfan Di on 2017-11-6 at 16:12. It is not recommended to use a steam trap; we have installed manual valves that are used to close promptly after draining water. Using a steam trap for 4.0 MPa superheated steam results in significant waste, as frequent venting is not necessary. Thermostatic valves are generally used in pipelines with lower pressure and temperature:)