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

A technology of melting and casting, internal temperature, applied in thermometers, thermometers with physical/chemical changes, measuring devices, etc., can solve the problems of single temperature signal perception and measurement, achieve continuous temperature measurement, strong anti-interference ability, temperature small field effects

Active Publication Date: 2014-01-01
ZHONGBEI UNIV
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  • Abstract
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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,

Method used

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

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Embodiment Construction

[0032] The internal temperature distribution testing system of the explosive melting and casting molding process involved in the present invention is divided into four parts: an optical fiber Bragg grating sensor array 10 , a signal detection and demodulation device 30 , a service and monitoring device 40 and an explosive melting and casting device 20 . The overall structure of the system is as Image 6 .

[0033] The explosive melting and casting device 20 is composed of a mold, a process cover, a thermal insulation riser and explosives in the mold, and its main function is to realize the melting and casting of explosives and place the fiber Bragg grating sensor array 10 to monitor the temperature. The fiber Bragg grating sensor array 10 consists of several grating sensor units connected in series by an optical fiber and arranged in an "S" shape to measure the temperature of multiple points in the explosive melting and casting device 20 and output optical signals. The signal...

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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...

Claims

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Application Information

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IPC IPC(8): G01K11/32G01K11/3206
Inventor 袁俊明王高马松闻强王建华于雁武刘玉存常双君
Owner ZHONGBEI UNIV
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