Device for testing deflagrability of condensed fire detonator under condition of high termerature and high pressure

A test device, high temperature and high pressure technology, applied in the direction of measuring device, fuel oil test, chemical analysis by combustion, etc., can solve the problems of inconvenient temperature environment, small size of the closed explosive device, difficulty in meeting the requirements of deflagration test, etc., and achieve the device structure Simple, convenient experimental operation, easy to control the effect

Inactive Publication Date: 2006-12-06
INST OF MECHANICS - CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current test device is difficult to meet the requirements of the deflagration test under high temperature and pressure
For example, the existing airtight detonator that can carry out condensed explosive experiments is difficult to observe and study the deflagration properties of condensed explosive due to the small size of the airtight explosive, and it is also not convenient to add a higher temperature environment.

Method used

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  • Device for testing deflagrability of condensed fire detonator under condition of high termerature and high pressure
  • Device for testing deflagrability of condensed fire detonator under condition of high termerature and high pressure

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Embodiment 1: choose a high-pressure vessel with a length of 3 meters, which is a thick-walled cylinder in structure, with an outer diameter of 200 millimeters and an inner diameter of 50 millimeters. The material must have certain strength and certain toughness. In the present embodiment, it is 60Si2CrVA steel. Such a high-pressure experimental vessel can withstand a pressure of 300MPa. Make an experimental cylinder with a length of 2.8 meters and a diameter of 49.5 mm. The material of the experimental cylinder is 35CrMo, and a groove is made on the cylinder. The width of the groove is 6 mm and the depth is 30 mm. This slot is used to hold condensed explosives. A heating chip with a power of 5000W / m is placed outside the thick-walled cylinder to heat the thick-walled cylinder. The heating sheet is wrapped with asbestos cloth as a heat insulation layer to reduce heat dissipation. Drill a small hole with a diameter of 5 mm every 200 mm on the side busbar of the thick-...

Embodiment 2

[0021] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the photodiodes placed on the small holes at different positions in Embodiment 1 are replaced with thermocouples. And other parts are identical with embodiment 1.

[0022] In this embodiment, when the deflagration front of the condensed explosive arrives, the thermocouple can measure the temperature signal due to the heat release from the chemical reaction of the explosive. By calculating the arrival time of temperature signals of thermocouples at different positions, the deflagration velocity of condensed explosive can be calculated.

Embodiment 3

[0023] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the photodiodes placed on the small holes at different positions in Embodiment 1 are replaced with metal probes. And other parts are identical with embodiment 1.

[0024] In this embodiment, when the deflagration front of the condensed propellant and explosive arrives, due to the chemical reaction of the propellant and explosive, the reaction product of the propellant and explosive is ionized and conductive, so that the metal probe can detect the ionization and conduction signal of the reaction product of the propellant and explosive. The deflagration velocity of the condensed explosive can be calculated by calculating the arrival time of the conductive signal of the metal probe at different positions.

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Abstract

The invention relates to a high temperature high pressure environment condensation explosive deflagrability testing device that includes testing canister, testing column, flame igniter and flame igniter end plate. The device also includes pressure adjusting jar and pressure adjusting end plate, the pressure adjusting piston. Several testing holes are set on the side wall of testing canister. Exhaust line, charging pipeline, pressure sensor and a group of speed sensor are inserted into the testing hole. The invention is simple structure, and the temperature and pressure is adjustable. It could reliably and accurately test the ignition for explosive in high temperature and high pressure environment.

Description

technical field [0001] The invention relates to a device for testing the properties of condensed explosives, in particular to a device for testing the deflagration properties of condensed explosives in a high temperature and high pressure environment. Background technique [0002] Most of the devices used for the study of deflagration properties are aimed at combustible gases. However, the current devices for research on the deflagration of condensed explosives (belonging to solid or liquid) are usually not suitable for the research on the deflagration properties of condensed explosives under high temperature and high pressure environments. The test device for the deflagration properties of condensed explosives under high temperature and high pressure environment must meet some basic requirements of high temperature and high pressure environment and deflagration test, such as: because the target is condensed explosives, its deflagration pressure is high; , and requires a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/22G01N25/50G01N31/12
Inventor 陈力丁雁生崔明月单文文汪永利丁云宏陈彦东刘萍王彦军向长美
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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