Venturi mixer with drainage function

Abstract

The invention discloses a venturi mixer with a drainage function. The venturi mixer comprises an outer pipeline, an inner pipeline and a fuel gas inlet channel which is vertically arranged on the outer pipeline, wherein a closed circuit chamber is formed between the outer pipeline and the inner pipeline; the inner pipeline comprises a contracting section, a throat section and a flaring section; gas inlets are uniformly formed on one circle along the circumferential direction of the throat section; the gas inlets are formed in an inclined form along the wall of the inner pipeline; the fuel gas inlet channel is arranged as a gradual reducing pipeline. The fuel gas firstly enters into the closed circuit chamber through the fuel gas inlet channel, and then enters into a main runner through a circle of gas inlets uniformly distributed on the throat section, and mixes with air entering from the inlet of the main runner, so that the smooth entering of the fuel gas is ensured while the uniform gas entering along the circumference of the throat section is realized, the buffering and pressure stabilization for the fuel gas are realized, the stable differential pressure between the fuel gas inlet channel and the main runner is formed and the uniform stable running field of the main runner is maintained, and furthermore, the gas inlets are formed in the inclined form on the throat section, so that the fuel gas can form the confluence at a certain degree, the influence on air entering is reduced and the air flow collision loss is reduced.

Description

technical field [0001] The invention relates to a Venturi mixer with drainage function, which belongs to the technical field of mixers. Background technique [0002] The Venturi mixer is installed on the air intake pipeline of the gas machine. Air and gas enter the mixer and mix. The main function is to mix the two gases to make the gas composition at the outlet uniform. When the speed of the gas intake supercharger is low, the negative pressure formed in the flow channel is small, but under normal circumstances, the gas has a certain pressure, which will cause air intake blockage, affecting the air-fuel ratio control and even the combustion in the cylinder , and when the gas intake pressure is insufficient or fluctuates greatly, it will cause poor gas intake and the gas machine cannot run stably. [0003] The existing Venturi mixer has a small hole along the circumference of the pipe throat, and the small hole is perpendicular to the direction of the gas flow. This structu...

AI Technical Summary

Problems solved by technology

When the speed of the gas intake supercharger is low, the negative pressure formed in the flow channel is small, but under normal circumstances, the gas has a certain pressure, which will cause air intake blockage, affecting the air-fuel ratio control and even the combustion in the cylinder , and when the gas intake pressure is insufficient or fluctuates greatly, it will cause the gas intake to be unsmooth, and the gas machine cannot run stably

[0003] The existing Venturi mixer has a small hole along the circumference of the pipe throat, and the small hole is perpendicular to the direction of the gas flow. This structure can overcome a certain pressure to assist the gas to enter the gas channel and mix with the hollow body, but it cannot To solve the relatively stable gas and air intake pressure, it is still unable to ensure the smooth intake and the uniformity of the mixed gas

Images