A method for arranging the injection unit of the injector of a two-component liquid rocket engine

A liquid rocket and engine technology, which is applied in rocket engine devices, machines/engines, mechanical equipment, etc. It can solve the problems that the accuracy of the jet is greatly affected, atomization and mixing are difficult, and machining methods are difficult to ensure accurate alignment. , to achieve the effect of improving mixing efficiency and high area utilization

Inactive Publication Date: 2013-12-11
SHANGHAI INST OF SPACE PROPULSION
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  • Abstract
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AI Technical Summary

Problems solved by technology

Since these jets intersect and converge at one point in space, it is very difficult to obtain high-efficiency atomization and mixing, and it is greatly affected by the alignment accuracy of the jets, and it is difficult to ensure accurate alignment by mechanical processing methods

Method used

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  • A method for arranging the injection unit of the injector of a two-component liquid rocket engine
  • A method for arranging the injection unit of the injector of a two-component liquid rocket engine
  • A method for arranging the injection unit of the injector of a two-component liquid rocket engine

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Embodiment Construction

[0019] Such as figure 1 Shown is a schematic diagram of the arrangement of concentric circles of the injection units of the bicomponent liquid rocket engine injector in the prior art. In the figure, the arrangement method of the injection units in the prior art is to arrange the injection units in several concentric circles On each concentric circle, only injection holes of the same type of propellant components can be arranged, and the spray fan formed by these units can only be deployed along the concentric circle. And the present invention proposes such as Figure 2 ~ Figure 4 The arrangement method shown is to arrange the injection unit at the node and center of the square grid, and let the spray fan formed by the injection unit spread out in two directions of 45 degrees and 135 degrees, so that the same grid content The four-sided spray fan is used, and then the propellant component types of the nozzle holes in each injection unit are arranged in a staggered manner, so t...

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Abstract

The present invention proposes a method for arranging the injection unit of the injector of the dual-component liquid rocket engine. The two directions of 45 degrees and 135 degrees are staggered to accommodate the four-sided spray fan in the same grid, and then the propellant component types of the nozzle holes in each injection unit are staggered to make the four-sided spray fan in the same grid The types of propellant components are arranged staggeredly, and finally, the four-strand mutual impact injection unit in the center of the grid without spray fan intersection can be arranged or not, so as to obtain different injection unit number densities to adapt to different injection flow rates Density requirements. Adopt the present invention, the injection unit logarithm that can be arranged per unit area injector surface is more, namely the area utilization rate is high, and has guaranteed that the spray fan of each kind of propellant component is all compatible with the spray of another kind of propellant component. The fans are adjacent to each other, which effectively improves the mutual mixing efficiency between the components.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a method for arranging injection units of an injector of a two-component liquid rocket engine. Background technique [0002] At present, the injectors of bicomponent liquid rocket engines of various specifications used in China are composed of one or more pairs of basic injection units, and the spraying and mixing of propellants are usually realized by the direct-flow hole jet mutual impact injection unit scheme. Such as figure 1 It is the scheme of the direct-flow hole jet mutual impact injection unit: the cylindrical direct-flow hole is machined by mechanical means, and by adjusting the direction of the jet flow ejected from the direct-flow hole, two or more jets collide with each other to achieve fog and blending effects. Since these jets intersect and converge at one point in space, it is very difficult to obtain high-efficiency atomization and mixing, and it is greatly aff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K9/52
Inventor 廖宏图
Owner SHANGHAI INST OF SPACE PROPULSION
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