Gunpowder specific volume measuring instrument

Abstract

The invention discloses a gunpowder specific volume measuring instrument in order to solve the problems that corrosion leakage easily happens and test object kinds are less in the prior art. The gunpowder specific volume measuring instrument is composed of an oxygen bomb, a vacuum pump, a gas tank, a temperature sensor, a pressure sensor and a data collector. The oxygen bomb is a container for gunpowder combustion, the vacuum pump is used to vacuumize the oxygen bomb and the apparatus, the gas tank is used to store gunpowder combustion gas, the pressure sensor is used to measure the combustion gas pressure, the temperature sensor is used to measure the combustion gas temperature, and the data collector is used to acquire data, process data and output a measure result. The designed gas tank selects an anticorrosion material for processing, can be rapidly dismounted, installed and cleaned, and solves the corrosion leakage problem of the gunpowder specific volume measuring instrument. The gas tank volume can be changed by replacing a gas tank body with different length, and thus the system volume of the gunpowder specific volume measuring instrument is changed, and the problem that the gunpowder specific volume measuring instrument is less in test object kind is solved.

Description

technical field [0001] The invention belongs to the technical field of gunpowder and mainly relates to a gunpowder specific volume measuring instrument. Background technique [0002] The specific volume of gunpowder is one of the important parameters to measure the working ability of gunpowder. The specific volume of gunpowder is usually measured with a specific volume measuring instrument. This measurement technology has become one of the important experimental methods for characterization of the energy performance of propellants, propellants, and explosives at home and abroad. In the research on the basic performance of propellants and propellants Playing an irreplaceable role, it provides a large amount of reliable basic data for the internal ballistics of guns, charge design and propellant engine charge design, and is also one of the important indicators for basic research and acceptance of many types of weapons. [0003] my country's scientific research institutes, pro...

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Problems solved by technology

[0003] The specific volume measuring instruments in operation in my country's scientific research institutes, propellant production plants and various military branches have the following two disadvantages: First, the currently commonly used specific volume measuring instruments will leak due to the corrosion of the gas tank after long-term use

The screw assembly type is mainly a cylindrical gas tank with multiple screws pressing the rubber ring on the end cover to seal. This kind of gas tank has no welds so it has better corrosion resistance, but the two end caps of this kind of gas tank need at least five A long screw and ten nuts are used to compress the rubber ring seal, which is very troublesome to install, disassemble and clean. If a single nut is too tight or too loose, it will cause the air tank to leak

These two types of gas tanks will cause changes in the system volume due to the long-term accumulation of nitrogen oxides, inorganic salts and moisture in the gas, which will affect the accuracy of the specific volume test. They have not fundamentally solved the corrosion leakage of the gas tanks. gas problem

[0004] Second, the volume of the system is not variable, resulting in fewer types of gunpowder that can be tested

Since the system volume of the specific volume measuring device cannot be changed quickly, the powder specific volume measuring device has fewer test objects

The test pressure fluctuation range of the above three gunpowder specific volume measuring instruments is -1Bar to 1Bar (the pressure sensor range is -1Bar to 4Bar), and the types of gunpowder that each gunpowder specific volume measuring instrument can test are very limited

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