Abstract: Disclosed are a method, a device, and a storage medium for measuring the nitrogen content. The method includes determining related variables associated with the nitrogen content; establishing an initial model, wherein the initial model takes the related variables as independent variables and the nitrogen content as dependent variables according to a historical operation data, and calculating parameters in the initial model; according to parameters in the initial model, obtaining parameters in a soft-sensing model by fitting; according to detected values of the related variables and the soft-sensing model, predicting the nitrogen content in real-time; and according to the predicted nitrogen content and an actual nitrogen content obtained by periodic sampling, obtaining a fusion detection result.

Abstract: A gas-liquid separation apparatus includes a tank and a flow reducing component. An inlet is formed in a middle of the tank. A hydrogen outlet is formed in a top of the tank. A processing chamber connected to the inlet. The flow reducing component is formed in the processing chamber and maintained above the inlet. The flow reducing component forms a flow reducing space and a flow partition chamber in a part of the processing chamber above the inlet, a gas-liquid initial separation space in the processing chamber and below the flow reducing component, at least one connection hole and a connection channel. The flow partition chamber is connected to the flow reducing space through the at least one connection hole. The gas-liquid initial separation space is connected to the flow partition chamber through the connection channel. The flow reducing space is arranged to be connected to the hydrogen outlet.

Abstract: The present application relates to a sealing soft water recovery apparatus for a vacuum pump in a vacuum pressure swing adsorption oxygen generation system, including a water tank, a wet Roots vacuum pump, a steam-water separator, and a collecting sink which are sequentially connected, where the collecting sink is connected to the water tank by a delivery tube provided with a delivery pump; and the water tank is connected to the wet Roots vacuum pump by a water inlet tube provided with a solenoid valve for controlling the opening and closing of a water channel. The present application has the effects of recovering sealing soft water and saving resources.