Device for improving jetting uniformity of nozzles

Abstract

The invention provides a device for improving jetting uniformity of nozzles. The device comprises an oxidizing agent nozzle and a fuel nozzle which are connected with each other and constitute a two-component jetting unit, wherein an oxidizing agent nozzle inlet throttling hole is embedded in an inlet of the oxidizing agent nozzle, and an outlet of the oxidizing agent nozzle is formed in the fuel nozzle; multiple rows of radial inlet holes are radially formed in the fuel nozzle, multiple rows of small holes are further axially formed in the fuel nozzle, and an annular cavity is formed in the lower end of the fuel nozzle; during working, an oxidizing agent enters the oxidizing agent nozzle inlet throttling hole via the inlet of the oxidizing agent nozzle, fuel enters the radial inlet holes of the fuel nozzle, is subjected to primary flow equalization, is subjected to secondary flow equalization by the aid of the annular cavity and is sprayed out via an outlet of the fuel nozzle finally, and uniform distribution along the circumferential height can be obtained. With the adoption of the device, the jetting uniformity of the fuel is improved, mixing and burning effects of the fuel and the oxidizing agent are enhanced, and then the burning efficiency of a thrust chamber is improved.

Description

technical field [0001] The invention relates to an injection unit that can be used in the field of aerospace or civilian combustion technology, and in particular to a device for improving injection uniformity of a nozzle. Background technique [0002] Nozzle devices are widely used in the fields of aerospace or civilian combustion technology, and generally consist of several injection units. The fuel nozzles in the existing dual-component injection units are usually simple in structure design in order to pursue convenient processing, and the design requirements for radial inlet holes are relatively loose, which only play the role of flow diversion. Usually there are only two rows of holes, each There are about four holes in a row, and the cavity for injecting fuel is a straight annular cavity. This structure fundamentally limits the uniformity of fuel injection and makes the mixing effect of fuel and oxidant unsatisfactory, which further affects combustion efficiency. , whi...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to solve the problem of uneven fuel injection in the dual-component injection unit, to provide a new type of nozzle device that improves the uniformity of fuel injection, and to Make the injection of fuel more uniform and the mixing of fuel and oxidant more fully

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