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Preparation method of water-cooled spray pipe measuring section structure under large gas flow application conditions

A technology for gas flow and measuring section, which is applied in the field of preparation of the structure of the measuring section of a water-cooled nozzle, can solve problems such as being easily damaged by ablation, and achieve the advantages of optimizing the structure form and material selection, prolonging the service life, and reducing the influence of ablation and erosion. Effect

Inactive Publication Date: 2019-01-04
BEIJING POWER MACHINERY INST
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to prepare 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

Method used

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  • Preparation method of water-cooled spray pipe measuring section structure under large gas flow application conditions
  • Preparation method of water-cooled spray pipe measuring section structure under large gas flow application conditions

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Embodiment Construction

[0022] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] In order to solve the problems of the prior art, the present invention provides a method for preparing the structure of the water-cooled nozzle measuring section under the condition of using a large gas flow rate. The preparation method includes:

[0024] Step 1: Prepare and set the front flange 102, the outer casing 103, the inner casing 104 and the rear flange 108 for forming the structure of the water-cooled nozzle measurement section according to the application conditions of the water-cooled nozzle;

[0025] Step 2: prepare a connecting seat 105 with ears extending inwardly on the upper part, as a connecting part between the total pressure rake mounting seat and the outer shell 103, and weld the connecting s...

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Abstract

The invention belongs to the technical field of solid rockets and particularly relates to a preparation method of a water-cooled spray pipe measuring section structure under large gas flow applicationconditions. To overcome the defect that a traditional water-cooled spray pipe measuring section is prone to being ablated and damaged under the effect of large-flow gas, the invention provides the preparation method of the water-cooled spray pipe measuring section structure under the large gas flow application conditions. A water-cooled spray pipe measuring section comprises a front flange, an outer shell, an inner shell, a pitot-pressure rake mounting base and a rear flange. The preparation method has the advantages that the structural forms and material selection of an inlet of the water-cooled spray pipe measuring section and the pitot-pressure rake mounting base are optimized, the scouring and ablation resistance of the water-cooled spray pipe measuring section under the large gas flow effect is improved, the service life of a water-cooled spray pipe is prolonged, and the success of long-time testing is guaranteed effectively.

Description

technical field [0001] The invention belongs to the technical field of solid rockets, and in particular relates to a method for preparing 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 sh...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/008
Inventor 闫红建刘杰何勇攀李海波何顺强
Owner BEIJING POWER MACHINERY INST
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