Water-cooled nozzle measuring section structure applied to large-gas flow use condition

Abstract

The invention belongs to the technical field of solid rockets, and relates to a water-cooled nozzle measuring section structure applied to a large-gas flow use condition. The invention aims to eliminate a defect that a conventional water-cooled nozzle measuring section is easily ablated and destroyed under the action of large-flow gas. The water-cooled nozzle measuring section structure provided by the present invention includes a front flange, an outer shell, an inner shell, a total pressure rake mounting seat and a rear flange. The structure forms and material selections of the inlet portionand total pressure rake mounting seat of the water-cooled nozzle measuring section are optimized; the anti-scouring ablation ability of the water-cooled nozzle measuring section under the action of alarge gas flow rate is improved; the service life of a water-cooled nozzle is prolonged; and the success of a long-term test can be effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of solid rockets, and in particular relates to a water-cooled nozzle measuring section structure under the condition of using a large gas flow. Background technique [0002] The water-cooled nozzle is an important part of the combustion performance test of the ramjet. It has the advantages of short processing cycle, low cost, and convenient arrangement of pressure / temperature measurement points. It is often used to replace the composite thermal protection nozzle in the combustion performance test. The water-cooled measuring section is the section where the measuring points of the water-cooled nozzle are arranged. The measurement section of the traditional water-cooled nozzle usually adopts two layers of stainless steel plates inside and outside, with a cooling circulation water channel in the middle, and the total pressure rake mounting seat is directly welded on the inner and outer shells, such as figure 1...

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 with strong ablation resistance under the condition of large gas flow for the defect that the measurement section of the traditional water-cooled nozzle is easily damaged by ablation under the action of large-flow gas. The structure of the tube measuring section greatly prolongs the service life of the water-cooled nozzle and effectively guarantees the success of the long-term test

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