RU180142U1 - Static mixer - Google Patents

Abstract

The device relates to static mixers for mixing liquids and obtaining homogeneous mixtures in pipelines and can improve the efficiency of mixing liquid phases due to additional swirling flow and enhanced vortex formation, which contributes to the dispersion of the components of the mixture. A static mixer comprising a tubular body 1 with connecting flanges 2, a constricting chamber 3, expanding the mixing chamber 6 and placed between them at least one section of additional mixing chambers, including an additional expanding chamber 4 and a vortex chamber 5 conjugated with each other with a non-linear generatrix . 1 s.p. f-ly, 2 ill.

Description

The utility model relates to static mixers for mixing liquids and obtaining homogeneous mixtures in pipelines and can be used, in particular, in determining the water content in the flow of a mixture of liquids.

When measuring the water cut of a liquid, high demands are placed on the homogeneity of the mixture, since the primary transducers of most moisture meters measure a characteristic parameter proportional to the water content in a limited flow range. During prolonged pumping of a mixture of liquids, phase separation of the flow occurs due to the difference in their properties (density, viscosity, etc.). This, in turn, leads to a decrease in accuracy when measuring the quantitative composition of water in a mixture of liquids.

There are many devices that are designed to mix liquids, and can also be used to obtain homogeneous mixtures.

Known static mixer containing a tubular body with a narrowing and expansion mixing chambers made in it. This mixer is a block of sequentially located one or more pairs of tapering and expansion chambers (RU 2215277 C1, publ. 27.10.2003).

The known mixer has insufficient mixing efficiency, since mixing is carried out only due to a sharp change in the flow velocity when it moves through the expansion and tapering chambers.

The problem to which the proposed solution is directed is to increase the efficiency of mixing the liquid phases in a static mixer by providing additional swirling and enhanced vortex formation.

The technical result is achieved by the fact that in a static mixer containing a tubular casing with a narrowing and expansion mixing chambers made therein, at least one section of additional mixing chambers located between the narrowing and expansion mixing chambers, communicated with them and including an additional expansion chamber and a vortex chamber with a nonlinear generatrix that are interconnected, while the cross section of the expansion chamber at the outlet of the mixer uet section merging process line.

Execution of a vortex chamber with a nonlinear generatrix in the mixer housing allows one to organize enhanced vortex formation of the flow due to forced swirling of the flow coming from the expansion chamber, which helps to achieve the required homogeneity of the resulting mixture.

The presence of sections of the mixing chambers, consisting of an additional expansion chamber and the associated vortex chamber, allows you to repeatedly change the speed of the flow moving in the mixer while vortexing in the vortex chambers, which helps to achieve even greater homogeneity of the mixture.

The utility model is illustrated graphically, where in FIG. 1 shows a diagram of the proposed static mixer with one section of additional mixing chambers, and FIG. 2 shows a diagram of a static mixer with several sections of additional mixing chambers.

The static mixer contains a tubular housing 1 with connecting flanges 2. The housing is made with a constricting chamber 3, an expansion chamber 4, a vortex chamber 5 connected to it, connected to an output expansion chamber 6, the output section of which corresponds to the section of the process pipe to be connected. The generatrix 7 of the vortex chamber 5 is nonlinear.

The expansion chamber 4 and the vortex chamber 5, interconnected, form a section of the mixing chambers. Several such sections can be made in the housing (Fig. 2), when the exit from the vortex chamber 5 of the first section of the chambers is connected to the entrance to the expansion chamber 8 of the second section of the chambers, coupled to the vortex chamber 9 of the second section.

The device operates as follows.

A liquid having insufficiently dispersed phases (for example, water and oil), passes alternately through the narrowing and expansion chambers 3 and 4, mixing due to a sharp change in the speed and direction of flow. At the exit of the expansion chamber 4, the fluid flow enters the vortex chamber 5, where it is twisted by reducing the flow rate after the expansion chamber and the very shape of the vortex chamber 5 (non-linear generatrix, providing a smooth change in the diameter of the chamber with a rounding at the outlet). Intensive vortex formation and additional mixing of the liquid is provided in chamber 5, as a result of which a finely dispersed stream of water-oil emulsion is formed, which has stable characteristics that are the same throughout the flow section.

The design of the device provides the necessary degree of dispersion of the liquid phases required when determining the quantitative composition of water in a liquid.

Using the proposed device in conjunction with in-line moisture meters will improve the accuracy of measuring the moisture content of the pumped liquid.

Claims (2)

1. A static mixer comprising a tubular housing with a narrowing and expansion mixing chambers made in it, characterized in that at least one section of additional mixing chambers is arranged in the housing, located between the narrowing and expansion mixing chambers, communicated with them and including paired between themselves an additional expanding chamber and a vortex chamber with a nonlinear generator. 2. The static mixer according to claim 1, characterized in that the cross section of the expansion chamber at the outlet of the mixer corresponds to the cross section of the process pipe to be connected.

Images