Erosion-resistant water-cooled spray pipe structure

Abstract

The invention belongs to the technical field of fixed rocket ramjets and particularly relates to an erosion-resistant water-cooled spray pipe structure. The erosion-resistant water-cooled spray pipe structure comprises a flange, an outer barrel, a convergent section, an inner barrel expansion section, a water inlet and a water outlet. To relieve an erosion impact on the convergent section of a water-cooled spray pipe from a high-temperature high-speed fuel gas, a section of copper infiltrated tungsten housing is embedded into the convergent section to replace a stainless steel housing. Compared with the prior art, the erosion-resistant water-cooled spray pipe structure has the characteristic that the section of copper infiltrated tungsten housing is embedded into the inner-layer housing ofthe convergent section of the water-cooled spray pipe. Since the section of housing made from copper infiltrated tungsten is embedded into the inner barrel of the convergent section, on which erosionof the fuel gas acts strongly, of the water-cooled spray pipe, the erosion resisting capability of the structure in the position is greatly improved. The erosion-resistant water-cooled spray pipe structure has the advantages that the high-temperature erosion resistance of the water-cooled spray pipe is enhanced, the service life of the water-cooled spray pipe is prolonged, and the success of a long-time test is guaranteed strongly.

Description

technical field [0001] The invention belongs to the technical field of fixed rocket ramjet engines, and in particular relates to an anti-scouring water-cooled nozzle structure. Background technique [0002] The water-cooled nozzle has short processing cycle, low cost, and can be used repeatedly. It is often used to replace the non-metallic thermal protection material nozzle in the combustion performance test. Traditional water-cooled nozzles often use two layers of stainless steel plates inside and outside, with a cooling water channel in the middle, such as figure 1 shown. [0003] The gas flow injected into the water-cooled nozzle during the combustion performance test of the solid rocket ramjet is a high-temperature and high-speed gas-solid two-phase flow. The existence of condensed phase particles, especially in the state of large gas flow, will cause strong The erosion and ablation effect of the engine causes the throat to gradually become larger, the engine performan...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to propose a water-cooled nozzle structure with strong anti-ablation ability to greatly prolong the water-cooled spray The service life of the tube effectively guarantees the success of the long-term test

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