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Pipeline full-size blasting cutting test device and test method

A technology of blasting cutting and testing device, applied in blasting, using stable tension/pressure to test the strength of materials, etc., can solve the problems of inability to guarantee, inability to produce long cracks, and inability to ensure the safety of operators, and to solve the problem of detonator safety. Influence, precise detonation system performance, and the effect of improving delay accuracy

Pending Publication Date: 2020-08-28
新疆环疆爆破工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the keys to this work is the generation of initial cracks in the pipeline. Generally, cutting tools are used for mechanical pipeline cutting. However, due to the high-pressure natural gas in the closed pipeline, the existing mechanical pipeline cutting can not only guarantee the safety of operators, but also Cracks of specified length cannot be produced in a relatively short period of time, and cannot meet the test requirements in terms of reliability and safety
In addition, when conducting a full-scale natural gas explosion test, it is necessary to ignite the leaked natural gas after detonation through the ignition device. However, the ignition device cannot guarantee that the gas mass that leaked and rose into the air will be ignited within 2 seconds after detonation, and there is no guarantee It can work effectively in the wind speed of 0~5, in the case of light rain and in the explosive environment

Method used

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  • Pipeline full-size blasting cutting test device and test method
  • Pipeline full-size blasting cutting test device and test method
  • Pipeline full-size blasting cutting test device and test method

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Example 1: Piping full-scale blasting cutting test device

[0060] A pipeline full-scale blasting cutting test device, comprising: a linear shaped energy cutter, a plurality of ignition devices and an initiation network, the initiation network controls the explosion of the linear shaped energy cutter and the firing time of the ignition device.

[0061] Such as figure 1 As shown, the linear shaped energy cutter is installed at the 12 o'clock position on the top of the center of the crack initiation tube along the axial direction of the crack initiation tube; the penetrating crack introduced by the linear energy gathering cutter should be parallel to the axial direction of the crack initiation tube, and the width of the penetrating crack is 10mm, length 500mm.

[0062] The linear energy-concentrating cutter includes two digital electronic detonators. Each digital electronic detonator is detonated in the middle of the explosion. Each digital electronic detonator is equipp...

Embodiment 2

[0073] Embodiment 2: Pipeline full-scale blasting cutting test method

[0074] 2.1 Requirements for blasting construction: use a linear shaped energy-concentrating cutter to cut a penetrating crack with a length of 500 mm and a width of 10 mm in the axial direction under the condition that an X80 pipeline with a diameter of 1422 mm and a thickness of 21.4 mm is filled with 13.3 MPa natural gas, and ignite it The device ignites cut gas that leaks into the air.

[0075] 2.2 Technical requirements for linear shaped energy cutter:

[0076] (1) Before the test, the steel pipe or steel plate of the same specification as the test should be used to conduct the cutting test of the linear energy-concentrating cutter to ensure reliable cutting;

[0077] (2) A linear shaped energy cutter should be installed before soil backfilling;

[0078] (3) The linear energy-concentrating cutter should be installed at the 12 o'clock position on the top of the center of the cracking tube along the ax...

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Abstract

The invention discloses a pipeline full-size blasting cutting test device and a test method. The test device comprises a linear energy-gathered cutter, a plurality of ignition devices and an initiation network, and the initiation network controls the explosion of the linear energy-gathered cutter and the launching time of the ignition devices. The test method comprises the steps of electric welding fixing of the auxiliary device, installation of the linear energy-gathered cutter, installation of the ignition devices, leading of explosives, setting of time delay, installation of the explosives,connection of the blasting network, detonation and inspection after blasting. Accurate time delay is achieved, the actual emission angle and height are adjusted, the coverage range and height are determined, long-time, high-altitude, low-altitude and full-space flame coverage is achieved, and it is ensured that leaked natural gas can be ignited.

Description

technical field [0001] The invention belongs to the technical field of pipeline strength testing, and in particular relates to a pipeline full-scale blasting cutting test device and a testing method. Background technique [0002] At present, the gas pipeline fracture control test simulates the real gas pipeline operating conditions, uses natural gas and other media to carry out full-scale fracture research of high-pressure gas pipelines, and truly simulates the impact of natural gas explosions released by pipeline ruptures on the environment. disaster assessment. One of the keys to carry out this work is the generation of initial cracks in the pipeline. Generally, cutting tools are used for mechanical pipeline cutting. However, due to the high-pressure natural gas in the closed pipeline, the existing mechanical pipeline cutting can not only guarantee the safety of operators, but also Cracks of specified length cannot be produced in a relatively short period of time, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12F42D3/00
CPCF42D3/00G01N3/12
Inventor 吴志云贾海波张振勇吴志潮王铭锋胡爱军刘艳兵王会文
Owner 新疆环疆爆破工程有限公司
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