What is backpressure
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This post was last edited by Shuichangshou on 2010-1-25 at 21:49. How exactly should back pressure be understood? I hope everyone can help explain it. Thank you.
What device does it refer to? Or what else? It’s too vague
Simply put, it is the pressure at the outlet.
In English, it’s called back pressure; some devices can be considered as having an outlet pressure
Back pressure, also known as the exhaust pressure at the turbine outlet, is commonly referred to as back pressure. It refers to steam that still has a certain pressure and temperature after performing work. In power plants, this steam is converted into water in a condenser and then fed back into the boiler; in other factories and mines, it is used as steam for production processes or for heating water for daily use. Therefore, it is necessary to maintain a certain pressure and temperature, usually between 0.5MP and 1MP, with a temperature of over 200 degrees Celsius, and such steam does not return to the boiler. Back pressure is a pressure that arises in hydraulic systems due to downstream resistance or changes in the impedance ratio at the inlet and outlet of components.
The one upstairs is too detailed; I’ve saved it, :)
I finally understand what’s going on:victory:
In a catalyzed back-pressure type turbine-driven main fan, the steam outlet pressure is equivalent to the back pressure. This back pressure affects the efficiency of the main fan; if the back pressure is too high, less energy is available for converting steam pressure into kinetic energy of the impeller, resulting in a decrease in the air volume delivered by the main fan
Many safety valves are of the back-pressure type; when such valves are put into use, it is necessary to first allow the material to flow through, then open the pressure lead line of the pilot valve to create back pressure, and finally open the rear gate valve in the safety valve circuit. Back pressure refers to setting a predetermined pressure for the safety valve, which is the pressure of the material; the opening pressure of the safety valve is then determined by multiplying this value by a safety factor.