Test device and method for continuously-flowing combustible dust cloud ignition sensitivity

A testing device and dust cloud technology, applied in measurement devices, radiation pyrometry, material explosiveness, etc., can solve the problems of no testing device, unsuitable for continuous flow dust cloud testing, etc., to prevent potential safety hazards, and the testing method is scientific and reasonable. , The effect of preventing the damage of the explosion pressure to the instrument

Active Publication Date: 2019-07-23
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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  • Test device and method for continuously-flowing combustible dust cloud ignition sensitivity
  • Test device and method for continuously-flowing combustible dust cloud ignition sensitivity

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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 field of industrial explosion protection technologies and discloses a test device and method for continuously-flowing combustible dust cloud ignition sensitivity. The device comprises a test pipeline, a fan, a Venturi wet dust collector, a dust feeding device and an ignition device, wherein an inlet end of the test pipeline is communicated with an outlet of the fan, anoutlet end of the test pipeline is communicated with the Venturi wet dust collector, and the dust feeding device and the ignition device are sequentially arranged on the test pipeline in the direction from the inlet end to the outlet end of the test pipeline. Compared with the prior art, through cooperation of the fan with an adjustable air volume and the dust feeding device with adjustable dustemission, the requirement for dust cloud ignition sensitivity testing under different flowing velocities and different dust concentrations is effectively met, an existing combustible dust ignition sensitivity evaluation index system is effectively perfected, and the blank of a combustible dust ignition sensitivity test standard in the prior art is effectively filled up.

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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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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