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A pipeline system and method for quantifying detonation instability of premixed gas

A pipeline system and stability technology, applied in the field of detonation mechanism research, can solve the problem of no quantitative method, achieve the effect of wide application and facilitate quantitative comparison

Inactive Publication Date: 2018-05-04
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Despite studies on the stability theory of knock over the past few decades, there is still no systematic quantification

Method used

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  • A pipeline system and method for quantifying detonation instability of premixed gas
  • A pipeline system and method for quantifying detonation instability of premixed gas
  • A pipeline system and method for quantifying detonation instability of premixed gas

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Embodiment 1

[0039] In order to show that the detonation instability calculation method is applicable to all kinds of smoke film trajectories, the following is CH 4 +2O 2 As an example, the present invention will be further described in conjunction with the accompanying drawings and examples:

[0040] The detonation experiment used a detonator with an inner diameter of 50.8 mm. The length of the detonating tube in the front section is about 1 m. The experimental part of the rear end adopts the first tube body and the second tube body of two transparent high-strength plastic tubes with a single length of 2 m. In order to facilitate data collection and consider the stability, the plastic tube consists of two It is composed of parts, and the rubber ring inside the flange achieves the sealing effect in the middle. With very sensitive small volume C 2 h 2 +O 2 (with stoichiometric ratio) filled in the metal detonator, used to facilitate the initiation of detonation in the test part, after ...

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Abstract

The invention relates to a pipe system for quantizing the detonation instability degree of a premixed gas and a method thereof. The pipe system comprises a detonation pipe, a first pipeline, a second pipeline, a smoke membrane and a measuring device, wherein one end of the detonation pipe is in sealing connection with one end of the first pipeline through a first flange; the other end of the first pipeline is in sealing connection with one end of the second pipeline through a second flange; the other end of the detonation pipe and the other end of the second pipeline are respectively sealed through flange end sockets with rubber sealing rings; the measuring device is arranged on the first pipeline and the second pipeline; and the smoke membrane is arranged in the second pipeline and is located on one side with the flange end socket with the rubber sealing ring. The device provided by the invention can be used for reliably, flexibly and quickly acquiring the smoke membrane results of various premixed gases under different initial pressures; a technical method for digitally treating smoke membrane images is supplied; and the method for quantizing the detonation instability degree of the premixed gas is systemically perfected, can be widely applied to the smoke membrane track analysis for the premixed gas and is beneficial to the quantization comparison.

Description

technical field [0001] The invention relates to a research method of detonation mechanism, in particular to a pipeline system and method for quantifying the detonation instability of premixed gas for the research of detonation instability and detonation structure. Background technique [0002] Document 1 (Lee, J.H.S. Dynamics of exothermicity. 1995: 321 - 335. Gordon and Breach.) points out that stable and unstable knock out mechanisms are different. The quantitative study of the cellular structure formed by the shear wave trajectory is very important in detonation propagation. The trajectory recorded on the smoke film obtained in the experiment does not move in a straight line. In order to explain and describe the reason for this phenomenon, it is necessary to study the degree of instability of different gases. The classification of "regular trajectories" and "irregular trajectories" described by smoke film trajectories has been qualitative and subjective. It is difficult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/84
CPCG01N21/84G01N2021/8405
Inventor 赵焕娟张英华严屹然高玉坤黄志安白智明王辉
Owner UNIV OF SCI & TECH BEIJING
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