Manifold, and system and method for detecting permeability of porous film containing manifold

Abstract

The invention relates to the technical field of detection and discloses a manifold, and a system and a method for detecting permeability of a porous film containing the manifold. According to the invention, the manifold is used for guiding flow to pass through the porous film in the detection for the permeability of the porous film. The manifold comprises an air inlet, an air outlet, a central slot and two lateral slots, wherein the air inlet is communicated with the central slot; the lateral slots are communicated with the air outlet; the two lateral slots and the central slot are arranged in a parallel form and are distributed on the two sides of the central slot; a pressure sensor is connected between an injection pump and the air inlet; the injection pump is used for supplying the flow at adjustable flow speed in the detection for the permeability of the porous film; the pressure sensor is used for detecting the pressure difference between the air inlet and the air outlet in the detection for the permeability of the porous film; the permeability of the to-be-detected porous film can be calculated on the basis of Darcy law according to the flow speed of the fluid of the injection pump and the measuring value of the pressure difference. The manifold provided by the invention can be used for directly detecting the horizontal permeability of the porous film and has wide application prospect.

Description

Technical field [0001] The present invention relates to the technical field of permeability detection, in particular to a permeability detection system and method of a manifold and a porous film containing the same. Background technique [0002] The horizontal permeability of a porous film is an important hydrodynamic property that determines its capillary wetting and fluidity characteristics. The fluid permeability of porous media is described in the famous Darcy’s Law. Darcy’s Law believes that the permeability reflects the obstructive effect of porous materials on fluid flow. Permeability has three components in three-dimensional space. For a porous film, the permeability includes two plane permeability (in-planepermeability, also known as horizontal permeability) and through-plane permeability (through-planepermeability). The calculation formula of Darcy's law is as formula (1), [0003] Q A = κ μ d P d S - - - ( 1 ) [0004] Amon...

AI Technical Summary

Problems solved by technology

The permeability characterization of micro-nano-scale films also stays on the permeability through the plane, while the measurement of horizontal permeability has always had problems such as inconvenient detection, difficult implementation, and poor accuracy.

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