Testing system for internal temperature distribution in process of fusion cast forming of explosives

Abstract

The invention discloses a testing system for internal temperature distribution in the process of fusion cast forming of explosives. The testing system is formed by an optical fiber Bragg grating sensor array, a signal detecting and demodulating device, a service and monitoring device and an explosive fusion casting device. The optical fiber Bragg grating sensor array is formed by optical fibers in an S-shaped arrangement mode, wherein a plurality of grating sensors are arranged on the optical fibers, and the optical fiber Bragg grating sensor array is fixed on one half of the central axis surface in the explosive fusion casting device. The grating sensors are arranged at intervals and distributed in an array mode. The signal detecting and demodulating device is located outside the explosive fusion casting device and is connected with the optical fibers. The service and monitoring device is in circuit connection with the signal detecting and demodulating device. The testing system effectively shelters the elasto-optical effect of Bragg grating to a thermal stress response, and can carry out sensing and measuring on temperature signals singly so as to carry out continuous multipoint monitoring on the change conditions of an internal temperature field in the process of fusion cast of the explosives.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensing, and relates to a testing system for testing the internal temperature distribution in the melting and casting molding process of explosives. More specifically, the present invention relates to a continuous, multi-point distributed optical fiber grating temperature measurement system built in an explosive melting and casting system. technical background [0002] Temperature and temperature field are the primary concerns and key issues in the study of explosive melting and casting molding process and mechanism. They are the main parameters for studying and controlling the crystallization and solidification process of explosives and the formation of abnormal quality characteristics. , the temperature dynamic change in the solidification process, the ambient temperature, etc., which are reflected in the temperature and temperature field that vary with time and process. A large number of...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to effectively shield the Bragg grating against the elastic-optic effect of the thermal stress response, and simply sense and measure the temperature signal, so that the fiber grating temperature measurement technology can be applied in the field of melting and casting explosives

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