Supersonic nozzle of supersonic speed rotational flow natural gas separator

Abstract

The invention provides a supersonic jet tube used for a supersonic cyclone natural gas separator, which is a key part of the separator, and consists of a contraction tube section, an extension tube section and a rectifying tube section. A moulding surface curve of the contraction tube section is higher-order polynomial, and natural gas airflow is expanded and accelerated in the section to achieve sonic velocity so as to form a straight sonic flow. The moulding surface curve of the extension tube section consists of a plurality of sections of curve, and the sections are smoothly connected to reduce disturbance to the airflow. The moulding surface curve of the supersonic jet tube at inlet and outlet changes flatly, has small curvature change, and has weak influence on the flowing of fluid upstream and downstream without obvious inlet and outlet effect. The extension tube has smooth inlet transition with small disturbance to the fluid. The extension tube section has flat change of moulding surface curve, small airflow expansion rate and good flow speed evenness, thereby helping droplet condensation nucleus grow larger grain diameter for separating. The supersonic jet tube not only evenly accelerates the airflow, improves evenness and stability of flow field, and reduces turbulivity, so that outlet airflow has better airflow quality, and can form droplets with larger grain diameter to improve the separation efficiency of the supersonic cyclone natural gas separator.

Description

Technical field [0001] The invention relates to a supersonic nozzle, which is a key component of a supersonic cyclone natural gas separator and belongs to the technical field of natural gas gathering, transportation, processing and treatment. Background technique [0002] The supersonic cyclone natural gas separator developed by supersonic cyclone separation technology is composed of Laval nozzle, supersonic rectifier, supersonic wing, diffuser and other components. It combines the theories of gas dynamics, thermodynamics and fluid mechanics, and integrates expansion and cooling, cyclone gas / liquid separation, recompression and other processes in a closed and compact device. The gas flow passes through the Laval nozzle and expands adiabatically to supersonic speed, forming a low temperature and low pressure. The low temperature causes the heavy hydrocarbons and water in the natural gas to condense into nuclei and grow into small droplets, forming a gas-liquid mixed flow. T...

AI Technical Summary

Problems solved by technology

The nozzle can produce droplets with a particle size of 0.1 microns to 2.5 microns, but the nozzle does not consider the influence of factors such as flow velocity uniformity and pressure loss on the supersonic cyclone natural gas separator

The supersonic gas flow in the supersonic nozzle tends to form a self-excited oscillation phenomenon, which leads to a large energy loss and reduces the efficiency of the nozzle. Nozzle Performance Requirements

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