8 results about "Chamber pressure" patented technology

A receptacle for a downhole system includes a pressure seal for isolating a first pressure and a second pressure, and a transmission pin passes through the pressure seal. A pressure compensation chamber is positioned within the receptacle between the first pressure and the second pressure and has a chamber pressure sealed from the first pressure and the second pressure. The transmission pin is partially positioned in the pressure compensation chamber, and a pressure compensation device is positioned in the pressure compensation chamber for equalizing the chamber pressure with the first pressure.

The invention relates to an inner ballistic trajectory design method for a floating series double-chamber balance gun. The inner ballistic trajectory design method comprises the steps of dividing an inner ballistic trajectory process period, establishing a gunpowder combustion model in a main chamber and an auxiliary chamber, establishing a projectile motion model, establishing a balance body motion model, establishing an auxiliary chamber motion model and establishing an inner ballistic trajectory energy conservation model. Based on a novel floating series-connection double-chamber structure for a balance gun, construction of an inner ballistic model is completed, and optimization design is conducted on the chamber structure and charging parameters. The problem that a large-diameter barrel weapon generates high bore pressure under the high initial speed index can be effectively solved. On the premise that the maximum chamber pressure is not increased, secondary acceleration of the projectile is achieved, and the outlet speed and the flight performance of the projectile are remarkably improved. According to the method, an important theoretical reference and a practical technical method are provided for design and development of the high-initial-speed large-caliber balance gun in the future, and the method has wide application prospects and great military value.

The invention relates to the field of chamber pressure measurement, and discloses a pressure measuring bomb based on a copper column pressure measuring method and an artillery chamber pressure measuring method, the pressure measuring bomb comprises a projectile, the projectile is loaded with a pressure measuring device, and the sum of the mass of the projectile and the mass of the pressure measuring device is equal to the mass of a projectile of a standard projectile; the pressure measuring device comprises a shell, a balance weight body, a bottom screw and a pressure measuring copper column, the shell is in threaded connection with the projectile, a blind hole is formed in the bottom of the shell, the balance weight body is arranged at the hole bottom of the blind hole, one end of the pressure measuring copper column abuts against the center position of the balance weight body, and the other end of the pressure measuring copper column is supported by the bottom screw in threaded connection with the bottom of the shell in an unpressed mode; the sum m of the mass of the counter weight body and the mass of the pressure measuring copper column should meet the formula, in the formula, R is the radius of the projectile, P is the bore pressure when the projectile is launched, M is the mass of the projectile, and r is the radius of a piston rod of a pressure measuring device in the special pressure measuring artillery. According to the invention, the limitation problem that the bore pressure measurement must be carried out on a specially-made pressure measurement artillery at present is solved.

The utility model discloses a particle cylinder type fire extinguisher which comprises a fire extinguishing agent storage container, a lower end cover, an upper end cover, a sliding block, a pressurizing pipe and a lead control part, the fire extinguishing agent is stored in the container and is separated by the sliding block; the other end of the pressurizing pipe is connected with a high-pressure source, and an electric control valve is arranged in the pressurizing pipe; the upper end cover is provided with a nozzle and a rupture disk which seals a nozzle air channel. When a fire occurs, the lead control part monitors the fire, the electric control valve is opened, high-pressure gas rushes into the cavity to push the sliding block upwards, the fire extinguishing agent is extruded to enable the pressure of the cavity to be increased sharply, the rupture disk is ruptured, and the fire extinguishing agent is sprayed out through the nozzle to extinguish the fire. The fire extinguisher integrates automatic monitoring, high-pressure driving and quick response, is easy and convenient to operate, efficient in fire extinguishing and suitable for various occasions, and remarkably improves the fire safety level.

This invention relates to a muzzle vibration reduction, noise reduction, and pressurization device, belonging to the field of mechanics. It includes a ferrule holder, a cone plug assembly, and a plug cap. The ferrule holder mates with the muzzle and is cylindrical with an axial opening on its side. A U-shaped notch is provided on the rear face of the ferrule holder, corresponding to the opening. A cone plug hole is coaxially formed on the front face of the ferrule holder. The cone plug assembly includes a cone plug, a washer, a spring, and a limiting block. The cone plug is tubular, with a circumferentially arranged annular limiting ring on its outer wall. The inner diameter of the cone plug is smaller than the inner diameter of the barrel. A spring is fitted onto the rear of the cone plug, and a recess is provided on the rear outer wall of the cone plug. A notch is provided on the limiting block, the width of which is the same as the width of the recess on the cone plug. The propellant gases are limited by the cone plug, increasing the intra-chamber pressure, ensuring the recoil energy of the bolt and smooth ejection of the spent cartridge case, thus providing buffering, energy absorption, and vibration reduction, ensuring reliable continuous firing, and improving service life.

The invention discloses a structure for launching steel balls in multiple directions, which realizes large-range space strike on coming unmanned aerial vehicles by optimizing a projectile launching mode. During launching, gunpowder gas is generated in the front combustion chamber and pushes the ejector rod, the ejector rod drives the gas closing block, and a bullet passing hole of the gas closing block and a bullet inlet hole in the bullet storage pipe are staggered, so that the bullet inlet hole is closed; after launching, the chamber pressure disappears, the return spring pushes the air closing block to return, the bullet passing hole of the air closing block is aligned with the bullet inlet hole in the bullet storage pipe, the bullet inlet hole is communicated with the bullet supply pipe, and the bullet supply spring pushes the bullet in the bullet supply pipe to enter the bullet storage pipe to wait for next-time launching.

This utility model discloses a 40mm tear gas smoke-generating riot control round for riot guns, relating to the field of riot control ammunition technology. The utility model includes a projectile assembly with a launching component at its bottom, and the projectile assembly includes an upper projectile body. By employing a high-low pressure chamber staged pressurization structure, the high-pressure chamber first accumulates energy during propellant combustion, then releases it to the low-pressure chamber through a pressure relief hole, propelling the projectile assembly to embed in the rifling and fly at high speed, increasing the range to ≥200m, with a maximum of 400m. This solves the problems of insufficient chamber pressure and limited range caused by the single high-pressure chamber design in existing technologies, meeting the needs of long-range law enforcement. It uses CS instead of CN as the irritant; CS is chemically stable, non-carcinogenic after combustion, has low skin irritation, and degrades quickly, resulting in minimal environmental impact. This solves the problems of toxic residues and health hazards associated with CN irritants in existing technologies, improving the safety of weapon use.