Device for measuring volume of warhead

Abstract

The invention discloses a device for measuring the volume of a warhead to solve the technical problems that measuring errors are large and cleaning is difficult when a liquid medium measurement method and a solid medium measurement method are adopted. The device comprises a constant volume cylinder block, a piston, a sealing ring, pressure meters, air guide pipes, a sealing plate, a pressing plate, a fixing base, a movable mounting frame and the like. The constant volume cylinder block, the piston, the sealing ring and the pressure meters are arranged on the movable mounting frame. A powder charging port of the warhead is sealed through the sealing plate, the pressing plate and the fixing base. The air guide pipes are arranged between the constant volume cylinder block and the pressure meters and between the constant volume cylinder block and the pressing plate. The device is mainly used for precise measurement of the volume of a powder chamber of the warhead.

Description

technical field [0001] The invention relates to a device for measuring the volume of a warhead, belonging to the field of mixed explosive charging technology. Background technique [0002] Before the warhead is charged, in order to estimate the warhead charge or calculate the charge density after charging, it is necessary to know the volume of the warhead's chamber. However, the structure of the medicine room of the warhead is often irregular, and it is difficult to calculate the volume after precise measurement of the structure size. The following two simple methods are often used to measure the volume of the medicine room of the warhead: one is the liquid medium measurement method, which is commonly used. Tap water is used as the medium, also called water measurement method, that is, tap water (density is approximately 1g / cm 2 ) is injected into the medicine chamber of the warhead, and the mass of the injected water is measured, and its value is regarded as the volume val...

AI Technical Summary

Problems solved by technology

[0003] The water measurement method is simple and easy, but it has the following insurmountable shortcomings: ①The density of water is only 1g / cm2 at 4°C 3 , but it is difficult to guarantee the condition of 4°C in actual measurement, so there is a certain error in the density value measured by this method; ②After injecting water into the warhead, it is necessary to observe the position of the water surface, but because of the surface tension, the water surface is a concave arc crater , for warheads with larger calibers, it is difficult to accurately judge whether the liquid level has reached the specified position, resulting in human judgment errors during measurement, making the measurement inaccurate; ③Water has a certain corrosive effect on the warhead, and often due to a small amount of cleaning Clean water causes rust on the inner surface of the warhead, which is unfavorable for charging; ④The water adhering to the inner surface must be cleaned up before charging. For warheads with irregular or deep shapes, cleaning is difficult and difficult. Trouble; ⑤ Some warheads have a built-in conductive structure and cannot be immersed in water, so water measurement cannot be used

[0004] The conversion method has the following insurmountable shortcomings: ① It is difficult to clean the particles from the dead corner of the shell, especially the cleaning of the drug chamber with built-in detonator and control wire; ② Vibration is required after the particles are loaded into the warhead drug chamber, but Vibration is not easy to implement, especially when the warhead is large; ③There are almost no standards for the vibration frequency and amplitude after the particles are loaded into the warhead, which causes human errors in the measurement; ④The warhead needs to be turned over repeatedly to pour out the particles. A relatively large warhead consumes a lot of energy

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