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Device and method for testing the ignition susceptibility of a continuous flow combustible dust cloud

A test device and dust cloud technology, which is applied in the direction of measuring device, radiation pyrometry, material explosion, etc., can solve the problems of unsuitable continuous flow dust cloud test and no test device, so as to improve the evaluation index system and prevent potential safety hazards , the effect of improving the experimental efficiency

Active Publication Date: 2022-04-12
SHENYANG JIANZHU UNIVERSITY +1
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Problems solved by technology

[0004] However, at present, there is no relevant test standard promulgated on how to test the explosion risk of combustible dust cloud under continuous flowing state, and there is no standard-based test device. For the existing dust cloud ignition susceptibility test standard, They are all fire susceptibility tests for suspended dust clouds under single blowing and dispersion conditions, and are not suitable for continuous flowing dust cloud tests

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  • Device and method for testing the ignition susceptibility of a continuous flow combustible dust cloud

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Embodiment Construction

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0037] Such as figure 1 As shown, the present invention provides a test device for the ignition susceptibility of a continuous flow combustible dust cloud, comprising a test pipeline 1, a blower fan 2, a Venturi wet dust collector 3, a dust feeding device 4 and an ignition device 5, the test pipeline 1 The inlet end of the test pipe 1 is connected to the outlet of the fan 2, and the outlet end of the test pipeline 1 is connected to the Venturi wet dust collector 3, and the test pipeline 1 is sequentially provided with a dust feeding device 4 and an ignit...

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Abstract

The invention belongs to the technical field of industrial explosion protection, and discloses a continuous flow combustible dust cloud ignition susceptibility test device and method. The inlet end of the pipeline is communicated with the fan outlet, the outlet end of the test pipeline is communicated with the Venturi wet dust collector, and the test pipeline is provided with a dust feeding device and an ignition device in sequence along the direction from the inlet end to the outlet end; the present invention and the prior art In comparison, through the cooperation between the fan with adjustable air volume and the dust feeding device with adjustable dust emission, it can effectively meet the fire sensitivity test of dust cloud under different flow velocities and different dust concentrations, and effectively improve the existing The combustible dust ignition sensitivity evaluation index system effectively fills the gap in the existing combustible dust ignition sensitivity test standards.

Description

technical field [0001] The invention belongs to the technical field of industrial explosion protection, and in particular relates to a test device and method for continuously flowing combustible dust cloud ignition sensitivity. Background technique [0002] In the pneumatic conveying system or dust removal system of the powder process industry, the dust-laden airflow pipeline accounts for more than 90% of the system composition, and it is very easy to inhale the ignition source generated by the connected production equipment, resulting in the explosion of the flowing dust cloud in the pipeline. According to statistics, such Pipeline dust explosion accounts for 25% of the total dust explosion accidents. At present, a single injection and dispersion method is often used at home and abroad to form a suspended dust cloud in the explosion container to study the ignition sensitivity of the dust cloud experimentally. This cloud-forming method is widely used in a large number of ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/54G01N15/06G01J5/00G01N21/84
CPCG01N25/54G01N15/06G01J5/00G01N21/84G01J2005/0077
Inventor 李畅马泽鹏苑春苗苑文博李刚
Owner SHENYANG JIANZHU UNIVERSITY
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