A suction-extruded semi-membrane ignition module capable of single or multiple ignitions and its working method and igniter filling method

Abstract

The invention discloses a working method and an ignition agent filling method of a suction extrusion semi-membrane type ignition module capable of achieving single-time / multiple-time ignition. According to the working method and the ignition agent filling method of the suction extrusion semi-membrane type ignition module capable of achieving single-time or multiple-time ignition, a semi-membrane is adopted to isolate a storage tank gas source and an ignition agent, the volume ratio of a gas source containing cavity and an ignition agent containing cavity is changed by adjusting the differential pressure of the two ends of the semi-membrane, and the effective volume of vacuumizing and nitrogen replacement can be accurately controlled; the semi-membrane pressure difference is adjusted so asto change the volume of the ignition agent containing cavity, a negative pressure suction effect is formed for filling of an ignition agent, filling of the ignition agent is achieved through a singlefilling connection port, and precise quantitative control of the filling speed and the filling amount of the ignition agent is realized; a scheme in which three-way assembly integrated membrane valvesand filling connection ports are arranged is adopted, after filling is completed, nitrogen is used for replacing the volume of a gas source to form air cushions and gas protection, and the storage and transportation safety of the ignition module is improved; the compatibility design of single-time and multiple-time ignition modules is effectively realized, so that the ignition agent filling procedure is more simplified, the filling process is more accurate in control, and the storage, transportation and use safety and reliability of the ignition module are improved.

Description

technical field [0001] The invention relates to a semi-membrane ignition module capable of single / multiple ignition, suction extrusion, working method and igniter filling method, which belongs to the field of overall structure design of liquid rocket engines, and is especially suitable for liquids with multiple starting requirements Rocket motor ignition design. Background technique [0002] Ignition devices based on chemical igniters are widely used in liquid rocket engines, and the chemical igniters have strong activity and high ignition reliability. The existing chemical igniter ignition device is a sleeve-type structure, which uses high-pressure nitrogen to directly squeeze the igniter to fill the pipeline. In the sleeve type ignition device, the nitrogen is in direct contact with the igniting agent. The nitrogen inclusion in the igniting agent will cause the filling volume deviation of the ignition pipeline, which will make the flow rate and flow distribution of the ig...

AI Technical Summary

Problems solved by technology

In the sleeve type ignition device, the nitrogen is in direct contact with the igniting agent. The igniting agent mixed with nitrogen will cause the filling volume deviation of the ignition pipeline, which will make the flow rate and flow distribution of the igniting agent uneven during the ignition process, and affect the stability of the ignition process.

In addition, the sleeve-type ignition module is designed for one-time use, which cannot realize multiple injections of igniter, so it cannot be compatible with the use requirements of single-time and multiple-time ignition modules

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