Manufacturing method for space guide vane

Abstract

The invention relates to a manufacturing method for a space guide vane. The manufacturing method comprises the steps that a three-dimensional entity model of the space guide vane is acquired; a supporting structure is established according to the three-dimensional entity model, and a 3D printing model is obtained; slicing treatment is carried out on the 3D printing model, and section profile datais obtained; a control instruction is generated according to the section profile data; a 3D printer executes the control instruction to complete printing work, and the space guide vane is obtained. Due to the fact that the 3D printing manufacturing technology is not affected by a mechanical machining structure, the axial length of the space guide vane manufactured through the manufacturing methodcan be shorter, and therefore the total length of a whole turbopump is reduced; and in addition, the number of following machining steps of the space guide vane produced through the manufacturing method is small, the machining allowance is small, the utilization rate of a material is high, and the manufacturing period is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of turbine pump manufacturing, in particular to a manufacturing method of a space guide vane. Background technique [0002] The space guide vane, also known as the guide shell, is mainly used in various multi-stage pumps, and is the main power-consuming part of the pump. Its main function is to collect the liquid flow at the outlet of the impeller and transport it to the inlet or outlet pipeline of the lower impeller. Convert velocity energy to pressure energy and eliminate rotational component; the efficiency of the space guide vanes has a greater impact on the performance of the overall pump. There are two types of blade structures for the existing space guide vanes: one is the space guide vane without continuous blades. After the guide blade diffuses, it directly enters the next-stage impeller along the flow channel. The liquid flow is from the radial shaft to the rear without the restriction of the blad...

AI Technical Summary

Problems solved by technology

There are two types of blade structures for the existing space guide vanes: one is the space guide vane without continuous blades. After the guide blade diffuses, it directly enters the next-stage impeller with the flow channel. The liquid flow is from the radial shaft to the rear without the restriction of the blade to the liquid flow. The efficiency is low, and it is not suitable for turbo pumps for rocket engines.

The other is the space guide vane with continuous blades, which has relatively small pressure head loss and high efficiency, and is widely used in rocket engine multi-stage turbo pumps, but the space guide vane with continuous blades has a compact structure and is difficult to cast , mainly because the processing process of the core is very complicated, the cycle is long, usually takes 1-1.5 months, and the yield is low

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