High-reliability multiblade cold/hot air flow mixed spoiler

Abstract

The invention provides a high-reliability multiblade cold / hot air flow mixed spoiler which comprises an outer ring and a spoiling component, wherein the outer ring can be connected with the inner wall of the pipeline through screws, and the spoiling component is arranged on the inner wall of the outer ring; the spoiling component comprises a plurality of flat blades and a spacing ring, and the blades are uniformly distributed in the circumferential direction; one end of each blade is welded on the inner wall of the outer ring and forms a certain included angle with the approach flow direction, and the other end of each blade is a free end and extends towards the central axis of the outer ring to form a center hole; the free end of each blade is provided with a spacing hole of which the cross-sectional shape is greater than that of the spacing ring; and the spacing ring orderly penetrates through the spacing hole of each blade. The invention overcomes the defect that the air flow temperature field uniformity of the existing high-flow high-temperature simulated ground equipment can not satisfy the requirements, provides a static mixed mode of multiblade spoiling and variable cross-section pipelines, and has the advantages of high flow, high temperature difference and high reliability.

Description

technical field [0001] The invention relates to a mixing and disturbing device for cold and hot air flow. Background technique [0002] In recent years, with the development of aerospace technology, especially the development of some high-Mach number, high-performance air-breathing engines, such as the development of ramjet engines for supersonic cruise missile power systems, advanced high-temperature, high-flow direct-connected or free-flowing It is a difficult technical problem to make the air have a uniform temperature field when it enters the tested product, especially when the ground equipment is required to have a wide range of operating conditions. [0003] In the development process of this type of ground equipment, in order to simulate the total stagnation temperature of the atmosphere, an air heater is usually installed at the front end of this type of equipment to solve the technical problem of large-flow air heating. If this temperature difference continues to d...

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Problems solved by technology

[0003] In the development process of this type of ground equipment, in order to simulate the total stagnation temperature of the atmosphere, an air heater is usually installed at the front end of this type of equipment to solve the technical problem of large-flow air heating. If this temperature difference continues to develop into the engine combustion chamber or the inlet of the free-jet nozzle, it is impossible to expect a uniform flow field at the inlet of the combustion chamber or the outlet of the jet nozzle , thus affecting the test results

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