Exhausting ejection device

Abstract

The invention relates to an exhausting ejection device and belongs to the technical field of gas turbine parts. The exhausting ejection device provided by the invention is mounted at an exhausting opening of a gas turbine; an exhausting pipeline of the gas turbine is connected with an ejection fluid pipeline; high-speed cold air fluid enters an exhausting ejection barrel through a working fluid channel; working fluid flows at a high speed and negative pressure is generated at a connecting part of an ejection fluid channel and the working fluid channel; exhausted gas of the gas turbine is pumped out under the action of the negative pressure; when the working fluid passes through a cyclone flat pipe, transverse spiral is formed in a mixing room, and the exhausted gas of the gas turbine is covered with the working fluid of spiral movement and is mixed with the working fluid; finally, the exhausted gas is discharged through an expansion room. According to the exhausting ejection device provided by the invention, a wind baffle plate is arranged at the connecting part of the ejection fluid channel and the working fluid channel; the wind baffle plate can be used for increasing the flow speed of gas exhausted from the gas turbine and also can be used for preventing a condition that the exhausted gas is refluxed so that the trial output of an engine is reduced.

Description

technical field [0001] The invention relates to an exhaust injection device, which belongs to the technical field of gas turbine accessories. Background technique [0002] A typical injection mixer structure has three main components: nozzle, mixer and diffuser. The ejector mixer mixes two fluids of different pressures in the same direction to form a fluid of intermediate pressure. Among them, the high-energy and high-pressure fluid becomes the main fluid; the low-energy and low-pressure fluid is called the secondary fluid; the mixed fluid is called the mixed fluid; the ratio of the secondary flow to the main flow is called the ejection flow ratio, or Injection coefficient. From the state of the main and secondary flow, there may be the same phase of the main and secondary flow; different phases of the main and secondary flow; there is a state change (such as evaporation or condensation) in the main and secondary flow. The characteristic of the jet mixer is that it pumps ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: aiming at the problem that the existing device has poor bleed air effect on some small and medium-sized engines with a slightly larger air flow rate, which may easily cause gas backflow and reduce the test power of the engine, the present invention provides an exhaust Ejector

Images