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Self-sealing spiral energy gathering joint cutting device

A self-sealing, spiral-shaped technology, applied in blasting and other directions, can solve the problems of drilling and blasting, difficult to change the size, complicated production, etc., and achieve good self-sealing, improved utilization rate, and large gap range.

Active Publication Date: 2018-02-23
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many solutions have improved these problems to some extent, the effect is still not ideal and new problems will appear
Some devices are inconvenient to process, the size is not easy to change, and the production is complicated, which is not conducive to large-scale industrial production
It will fail in some special fluid environments and cannot achieve the preset penetration effect
The root problem of drilling and blasting still cannot be effectively solved

Method used

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  • Self-sealing spiral energy gathering joint cutting device
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  • Self-sealing spiral energy gathering joint cutting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: A 10-turn spiral aluminum tube slitter penetrates the steel plate

[0036] refer to Figure 4 and Figure 5, The wall thickness of the spiral tube is 1.20mm, the outer diameter of the tube is 5.00mm, and the tube material is aluminum. The inner diameter of the processed spiral tubular drug-type cover is 21.00mm, and the height is 50mm. The explosives are 90% RDX and 10% ammonium nitrate. After mixing evenly, fill the explosives into the spiral tubular drug cover and compact them. The density is guaranteed to be 1.5g / cm 3 to 1.7g / cm 3 . Since there is no bonding between the tubes of the spiral tube, the explosives will be squeezed out after the powder is pressed, so it should be cleaned up when the explosives are found to be squeezed out. The experiment uses a non-priming detonator 1 to detonate, and the detonator 1 is placed in the center of the surface at one end of the shaped charge.

[0037] The steel plate 5 penetration test was carried out on the sh...

Embodiment 2

[0038] Example 2: A 3-turn helical aluminum tube slitter penetrates a round tube

[0039] refer to figure 2 and Figure 6 , The wall thickness of the spiral tube is 1.30mm, the outer diameter of the tube is 6.00mm, and the tube material is aluminum. The inner diameter of the processed spiral tubular drug-type cover is 18.00mm, and the height is 18mm. The explosives are 90% RDX and 10% ammonium nitrate. After mixing evenly, fill the explosives into the spiral tubular drug cover and compact them. The density is guaranteed to be 1.5g / cm 3 to 1.7g / cm 3 . Since there is no bonding between the tubes of the spiral tube, the explosives will be squeezed out after the powder is pressed, so it should be cleaned up when the explosives are found to be squeezed out. The experiment uses a non-priming detonator 1 to detonate, and the detonator 1 is placed in the center of the surface at one end of the shaped charge.

[0040] A steel pipe penetration test was carried out on the shaped ch...

Embodiment 3

[0041] Example 3: A 4-turn spiral aluminum tube slitter penetrates the steel plate

[0042] refer to Figure 4 and Figure 5 , The wall thickness of the spiral tube is 1.60mm, the outer diameter of the tube is 8.00mm, and the tube material is aluminum. The inner diameter of the processed spiral tubular medicine cover is 25.00mm, and the height is 32mm. The explosives are 90% RDX and 10% TNT. After mixing evenly, fill the explosives into the spiral tubular drug-shaped cover and compact them. The density is guaranteed to be 1.5g / cm 3 to 1.7g / cm 3 . Since there is no bonding between the tubes of the spiral tube, the explosives will be squeezed out after the powder is pressed, so it should be cleaned up when the explosives are found to be squeezed out. The experiment uses a non-priming detonator 1 to detonate, and the detonator 1 is placed in the center of the surface at one end of the shaped charge.

[0043] The steel plate 5 penetration test was carried out on the shaped ch...

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Abstract

The invention discloses a self-sealing spiral energy gathering joint cutting device. By means of the self-sealing spiral energy gathering joint cutting device, a traditional shaped charge form is changed, and spiral jet flow sprayed to the periphery can be formed. The self-sealing spiral energy gathering joint cutting device comprises a spiral tubular shaped charge cover, an explosive and an igniter. The spiral tubular shaped charge cover is formed in a manner that a tubular product is tightly and spirally wound. The explosive is an ordinary explosive, and the explosive is loaded into a cavitydefined by the tube to form charge. The igniter is a universal priming material such as a detonator and a detonating cord. By means of the self-sealing spiral energy gathering joint cutting device, the problems of overexcavation and under-excavation of the foundation of medium-length hole blasting and the underholing problem are mainly solved, and following construction is facilitated. In a borehole-blasting method, the borehole extra-deep situations can be reduced, the hole drilling cost is reduced, and the utilization rate of boreholes is increased. The explosive energy is reasonably utilized, the cost is saved, a new thought is initiated, the spiral shaped charge cover convenient and rapid to use is introduced, the form is simple, machining is easy, the production efficiency is improved, and the use cost is reduced.

Description

technical field [0001] The invention belongs to the field of engineering blasting, and in particular relates to a self-sealing spiral shaped energy-gathering kerf. Background technique [0002] Blasting technology plays an important role in my country's infrastructure construction. Tunnel excavation, ore mining, and subway construction all require blasting to complete. my country's railway lines and highway lines are long and complex. When building railways and highways, tunnels are often excavated, and blasting is used to facilitate construction purposes. At present, many cities in our country are building urban subways. It is difficult to use mechanical means to operate in coastal areas and some cities with hard geology, and blasting technology is needed to realize them. Explosive means are also used in coal mines and other ore mining to improve production efficiency and reduce costs. [0003] Although blasting technology is widely used and developed rapidly, the current...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D3/04F42D1/00
CPCF42D1/00F42D3/04
Inventor 马宏昊邓永兴沈兆武杨明王奕鑫
Owner UNIV OF SCI & TECH OF CHINA
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