One-way cylindrical shell confined reaction intensity quantification diagnostic device and diagnostic method

Abstract

The invention discloses a one-way column shell restraint reaction intensity quantitative diagnosis device and a diagnosis device method. The diagnostic device is a set of three-dimensional explosion device with controllable constraints based on the improvement of the traditional DDT tube experiment. It adopts bolt constraints and kg-level large mass block inertial constraints, and uses black powder to ignite. The diagnostic method uses high-speed photography and the combined diagnosis of the velocity of the constrained shell. The high-speed photography observes the time-space evolution image of the whole process, and the velocity of the constrained shell measured by the laser interferometric velocimetry system is used to accurately characterize the response intensity. The beneficial effect of the present invention is to realize the quantitative control of constraints, the precise observation of the three-dimensional time-space evolution image of the accident response, the precise quantification of the response intensity, and the characteristics of simple diagnostic device, convenient test, high reliability, stable and controllable state , can be used in quantitative diagnostic tests for the characterization of the accident response severity of various explosives and weapons and ammunition, and can realize the comparison of the characteristics of different explosives.

Description

technical field [0001] The invention belongs to the technical field of diagnostic experiments, and in particular relates to a quantitative diagnostic device and a diagnostic method for constrained reaction intensity of a one-way cylindrical shell. Background technique [0002] During the whole life cycle of the charging system, that is, in the process of storage and transportation, there is a risk of unexpected reaction under the conditions of impact and fire accidents. When it explodes violently, it may cause serious accidents such as equipment damage and massive casualties. Different from traditional shock initiation, the development of non-shock ignition reaction under accidental stimulus is usually a nonlinear complex process. It has been recognized that the reaction originates from thermal decomposition of temperature rise, and that the reaction evolution is closely related to conduction and convective combustion, and combustion transitions to detonation ( DDT) is the r...

AI Technical Summary

Problems solved by technology

Existing qualitative / semi-quantitative methods are difficult to accurately describe the evolution process of intensity. For example, the method of fragment size and on-site observation of complex structures can only reflect the aftereffect of damage, and the overpressure characterization cannot be distinguished from that of detonation. The pressure measurement in the way of pressure characterization explosion is usually incomplete, and it is urgent to explore a more effective experimental control device and control method to quantitatively characterize it

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