Reducer setting issue
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This post was last edited by wxsoso on 2018-7-20 09:03. Purpose: To extract steam from the superheated steam pipeline for pressure reduction and subsequent delivery. Parameters: Range of superheated steam pressure: 2.04~4.6 MPa; Temperature: 250~320°C. Changes in the boiler’s operating load are the cause of variations in the inlet steam pressure; therefore, the pressure reduction device needs to be able to adapt to changes in the inlet superheated steam conditions ranging from 4.6 MPa/320°C to 2.04 MPa/250°C. Requirements for steam extraction and pressure reduction for external delivery: Pressure: 2.0 MPa; Temperature: above 250°C; Flow rate: 3–44 t/h. Issue: The pressure of the inlet parameters varies significantly, and the demand for steam for external delivery also experiences substantial fluctuations. I would like to ask the experts here: how can I set up the appropriate pressure relief devices to meet such delivery requirements? Thank you! !
First, it is necessary to analyze why the pressure of the inlet steam changes significantly – is it affected by variations in the amount of temperature and pressure reduction? Is it due to the steam consumption by other devices in the system, or is the pressure in the steam supply system unstable? After analyzing the reasons for unstable inlet pressure, resolving the issue of unstable inlet pressure will solve the problem.
I didn’t explain my question clearly; I’m sorry. Changes in the boiler operating load are the cause of variations in the inlet steam pressure; therefore, the pressure reduction device needs to adapt to changes in the inlet superheated steam pressure ranging from 4.6 MPa/320°C to 2.04 MPa/250°C.
This post was last edited by wxsoso on 2018-7-20 09:05. Looking forward to experts helping with answers; thanks!~~~
If it’s a problem with the boiler, I don’t have any good solutions. But with such large fluctuations in our boiler’s performance, does it not affect other areas that use steam?
The extraction steam comes from the power plant, and changes in the operating load of the power plant can result in variations in the pressure and temperature at the point where steam is extracted for industrial use.
My personal experience with steam is as follows: the pressure of the steam supplied from within the power plant remains relatively stable； Is it the significant variation in steam consumption along the pipeline from the power plant to the pressure regulator, or is it the fact that the diameter of this pipeline is too small, which causes large pressure fluctuations at the pressure regulator?
As can be seen from the thermal balance diagram, the initial parameters of the steam supplied by the power plant vary under different load conditions, as mentioned earlier. At the same time, since it is not a single user on the user side, the consideration of user parameters involves shifting from the usage of one user to the usage of all users, which represents a relatively large change as well.