Double-component nozzle liquid flow performance testing device

Abstract

The invention provides a double-component nozzle liquid flow performance testing device, and solves the problem that an existing double-component nozzle cannot measure flow under double-path given pressure drop at the same time. The device comprises an upper testing shell, a lower testing shell, a first pressure measuring nozzle and a second pressure measuring nozzle, the upper testing shell comprises a water inlet nozzle, an upper cover plate and an upper barrel which are sequentially arranged from top to bottom; the lower testing shell comprises an annular bottom plate, a middle sleeve, a lower bottom plate and a water inlet filler neck; the annular bottom plate is arranged at the upper end of the middle sleeve, and the lower bottom plate is arranged at the lower end of the middle sleeve; the water inlet filler neck is arranged on the outer wall of the middle sleeve; a bottom plate of the upper barrel is located in the middle sleeve, and the annular bottom plate is fixedly connectedwith the upper cover plate; the upper nozzle penetrates through a mounting hole of the upper barrel, the upper end of the upper nozzle is positioned in the upper cylinder, and the lower end is arranged in the middle sleeve; the upper end of the lower nozzle is arranged in the middle sleeve, and the lower end is arranged on the lower bottom plate; the first pressure measuring nozzle is arranged onthe upper cylinder body; and the second pressure measuring nozzle is arranged on the middle sleeve.

Description

technical field [0001] The invention relates to the field of nozzle flow tests, in particular to a dual-component nozzle liquid flow performance test device, which is used in the liquid flow tests of various types of dual-component nozzles of rocket engines. Background technique [0002] In the development process of the liquid coal thrust chamber, it is necessary to conduct liquid flow tests on various nozzles to obtain their performance parameters and verify whether the product design meets the technical requirements. During the nozzle liquid flow test process, the nozzles need to be repaired and retested on site according to the technical requirements. The number of nozzles in each batch of test is nearly 1,000 pieces, and the liquid flow test task is relatively large. The upper nozzle and the lower nozzle of the two-component nozzle are generally connected by brazing, and the water inlet holes have been machined before brazing. In the traditional nozzle liquid flow test...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing dual-component nozzle cannot simultaneously measure the flow rate under the dual-path given pressure drop, resulting in the change of the flow rate through the dual-component nozzle, and to provide a dual-component nozzle liquid flow performance test device , through this system, the flow coherence of the bicomponent nozzle is checked, and the qualified bicomponent nozzle is installed in the rocket engine to solve the ablation problem caused by the uneven distribution of the combustion flow field of the rocket engine

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