Filling device used for constant-temperature and constant-pressure continuous chemical charging of micro combined solid pushing engine

Abstract

The invention discloses a filling device used for constant-temperature and constant-pressure continuous chemical charging of a micro combined solid pushing engine. A cavity wall hopper is installed on a supporting rack. A cover plate is installed at the upper end of the cavity wall hopper. A venting port communicated with an inner cavity of the hopper is formed in the cover plate. A water inlet and a water outlet which are communicated with the cavity wall are formed in the side wall of the hopper. Circulating water is introduced into the cavity wall, so that the temperature of chemical paste in the hopper is constant. A discharging port communicated with the inner cavity of the hopper is formed in the bottom of the hopper. A throttling valve is installed at the dischargingport. The circulating water is introduced into the cavity wall of the hopper so that the temperature of the chemical paste in the hopper can be constant. After the cover plate and the hopper are sealed, nitrogen is introduced, and then the chemical paste filling speed can be controlled by controlling the air pressure. The valve can be opened and closed simply and safely by operating the throttling valve. The filling device is low in cost, convenient to mount, dismount and clean, and capable of achieving efficient safety production of a large scale of micro combined solid pushing engines.

Description

technical field [0001] The invention relates to a constant temperature and constant pressure precise filling device for high-viscosity fluid, which belongs to the technical field of fluid filling, and in particular to a filling device for batch production of micro-composite solid thrust motors. Background technique [0002] The compound fixed propulsion engine is one of the most important power devices in my country's national defense and aerospace industries, and its fuel is solid propellant. As an airborne carrier, the composite fixed propulsion engine needs extremely precise power parameters, and has extremely high requirements for the combustion stability and consistency of its internal propellant. Due to the diversity of the structural dimensions of the composite solid propulsion engine shell and the solid propellant formulation, different charging methods are required for engines with different structural functions. At present, the most common charging method of compo...

AI Technical Summary

Problems solved by technology

If the charge method of vacuum pouring is adopted, there are problems such as difficulty in tooling design, difficulty in controlling the amount of charge, frequent disassembly of tooling and high difficulty in cleaning.

However, the manual filling method has the disadvantages of frequent shoveling, high viscosity slurry, slow charging speed, and time-consuming rework.

[0004] To sum up, due to the characteristics of the micro-composite fixed propulsion engine, such as small structural size, small amount of charge and high risk, it is difficult to complete the charge pouring in a safe, large-scale and low-cost way by vacuum pouring and manual filling. craft

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