Working pressure testing device for small gas generator

Abstract

The invention discloses a working pressure testing device for a small gas generator, and belongs to the technical field of gas generator acceptance and testing. The device comprises a fuel gas generator, a three-way pipeline, a copper pad, a second-stage spray pipe and a ground generator, a gas outlet of the gas generator is connected to an inlet of the three-way pipeline, the second-stage spray pipe is installed at an outlet of the three-way pipeline, the three-way pipeline is provided with a pressure measuring opening and can be used for measuring the pressure in the three-way pipeline, andthe ground generator is mainly used for determining the relation between the pressure in the three-way pipeline and the pressure in the gas generator. When a gas generator operates, gas flows into thetest pipeline and then is discharged through the secondary spray pipe, a certain pressure is formed in the three-way pipeline due to the action of the second-stage spray pipe, the internal pressure of the three-way pipeline can be measured, and finally the working pressure in the combustion chamber of the generator can be indirectly obtained by utilizing the relationship between the internal pressure of the three-way pipeline and the internal pressure of the gas generator.

Description

technical field [0001] The invention relates to a small gas generator working pressure testing device, belonging to the technical field of gas generator acceptance and testing. Background technique [0002] The gas generator has the advantages of simple structure, short dynamic response time, high reliability, and long-term storage, so it is widely used in various industries such as national defense, aerospace, and automobiles. Working pressure is the key performance of the gas generator, and its performance level directly affects the use of the gas generator. In order to ensure the quality of the gas generator product, it is necessary to test the working pressure before leaving the factory. However, for small gas generators, due to the limited structural space, there is often no pressure measuring interface in the official product, so the working pressure of the official product cannot be tested during the product acceptance process. In this case, the ground generator of t...

AI Technical Summary

Problems solved by technology

However, for small gas generators, due to the limited structural space, there is often no pressure measurement interface in the official product, so the working pressure of the official product cannot be tested during the product acceptance process

In this case, the ground generator of the same batch with a pressure measurement interface is usually used to replace the acceptance of the actual product. However, due to the differences in production batches and structures between the ground generator and the actual generator, the test results Does not reflect the actual performance level of the product to be delivered

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