Mutual-impact jetting plate liquid flow testing device

Abstract

The invention discloses a mutual hitting type jetting disc liquid flow testing device. A flow guiding plate component is arranged at an outlet of a liquid collecting cavity. A mutual hitting type jetting disc is arranged in the flow guiding plate component and pressed and fixed through a pressing ring. The liquid collecting cavity and the flow guiding plate component are sealed through an O-shapedring. A drainage assembly is arranged at the center of a collecting assembly. After test media are injected into an inlet of a liquid collecting assembly, the test media flow into the mutual hittingtype jetting disc through the flow guiding plate component and then are sprayed out, and the test media are subjected to drainage through the drainage assembly or directly sprayed into the collectingassembly, and the liquid flow test is finished. Through the technical scheme, the testing process is simple, the speed is high, existing labor force is greatly liberated, and the time cost is reduced;flow characteristic testing data of each jetting hole can be independently read, the machining quality and precision of each jetting hole are judged, and the testing precision is high; and the structure is simple, an expensive flow meter is omitted in the testing device, and the testing cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of engine liquid flow test, in particular to a mutual impact injection plate liquid flow test device. Background technique [0002] The injection disc is an important part of the liquid rocket engine injector, and its performance determines many key technical indicators such as the engine's combustion efficiency, specific impulse, and combustion stability. Before the mutual impact injection plate is welded into an injector, it is necessary to conduct a liquid flow test on multiple groups of mutual impact injection holes arranged concentrically on the injection plate. By judging the flow characteristic test data, each Whether the processing quality of injection holes meets the requirements of technical indicators. [0003] The existing mutual-impact injection plate liquid flow test devices are basically divided into two categories, one type of test device is used to test the liquid flow of all injection hole...

AI Technical Summary

Problems solved by technology

Among these two types of test devices, the former has a simple test process, but can only obtain the overall flow characteristics of the injection plate, and then calculate the average flow characteristics of a single injection hole, and cannot accurately identify defective injection holes; while the latter can Obtain the flow characteristics of a single or a single pair of injection holes, but the test process is cumbersome. For some injection plates with complex structures, hundreds of repeated tests may be required, and the test process is time-consuming and laborious.

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