阅读说明：本技术 用于管道爆破的聚能切割装置 (Energy-gathering cutting device for pipeline blasting ) 是由 郭为民 张要杰 王爱民 陈小芳 卢国强 雷继强 白海超 吕永斌 王正严 于 2020-06-01 设计创作，主要内容包括：本发明公开了一种用于管道爆破的聚能切割装置,包括聚能切割器和用于将聚能切割器安装在管道上的安装支架,所述聚能切割器包括炸药盒和与炸药盒连通的浇注盒,所述浇注盒的底面设置有倒V形槽。本申请中倒V型罩设计即可使爆轰波沿垂直两个斜边方向将爆红能量混集于药型罩顶点轴线部分形成一股速度超高的金属射流,从而切割试验管道,在管道上形成平行于钢管轴向的贯穿型裂纹,满足管道线性切割需要。通过调整炸高、顶锥角可以调节金属射流在试验管道上的切割宽度,调整药型罩底宽可以调整金属射流的切割深度。(The invention discloses an energy-gathering cutting device for pipeline blasting, which comprises an energy-gathering cutter and a mounting bracket for mounting the energy-gathering cutter on a pipeline, wherein the energy-gathering cutter comprises a explosive box and a pouring box communicated with the explosive box, and an inverted V-shaped groove is formed in the bottom surface of the pouring box. The design of falling V type cover in this application can make the detonation wave along two perpendicular hypotenuses directions will explode red energy and mix the collection in the super high metal efflux of a speed in type of a medicine cover summit axis part to cutting test pipeline forms the type of running through crackle that is on a parallel with the steel pipe axial on the pipeline, satisfies pipeline linear cutting needs. The cutting width of the metal jet on the test pipeline can be adjusted by adjusting the explosion height and the top cone angle, and the cutting depth of the metal jet can be adjusted by adjusting the bottom width of the liner.)

1. An energy-gathering cutting device for blasting pipelines is characterized in that: the energy-gathering cutter comprises an energy-gathering cutter and a mounting bracket used for mounting the energy-gathering cutter on a pipeline, wherein the energy-gathering cutter comprises a explosive box (2) and a pouring box (1) communicated with the explosive box (2), and an inverted V-shaped groove is formed in the bottom surface of the pouring box (1).

2. The cumulative cutting device for pipe blasting according to claim 1, wherein said explosive cartridge (2) comprises a ceiling plate (27), a cover plate covering under the ceiling plate (27), and end plates (25) provided at both ends of the ceiling plate (27).

3. The cumulative cutting device for pipe blasting according to claim 2, wherein said shroud comprises a first side plate (21), a first bottom plate (22), a second bottom plate (23) and a second side plate (24) arranged side by side in this order, wherein the distance between said first bottom plate (22) and said second bottom plate (23) increases gradually in the direction away from the top cover plate (27).

4. The cumulative cutting device for pipe blasting according to claim 3, characterized in that said first side plate (21), first bottom plate (22), second bottom plate (23) and second side plate (24) are W-shaped, and said first side plate (21) and second side plate (24) are perpendicular to the top cover plate (27).

5. The cumulative cutting apparatus for pipe blasting according to claim 3, wherein said first side plate (21), first bottom plate (22), second bottom plate (23) and second side plate (24) are integrally formed.

6. The cumulative cutting device for pipe blasting according to claim 2, characterized in that the bottom of the end plate (25) is provided with a ground foot, and the ground foot is provided with a round hole (26) for connecting with a mounting bracket.

7. The energy-gathering cutting device for the pipe blasting according to claim 1, wherein the mounting bracket comprises a vertical plate (3) fixed on the pipe, a sliding groove (31) is formed in the vertical plate (3), and a bolt penetrates through the sliding groove (31) and the round hole (26) in sequence to fix the energy-gathering cutter and the mounting bracket.

8. A shaped cutting apparatus for pipe blasting according to claim 2, wherein one mounting bracket is provided for each end plate (25).

9. The energy-gathering cutting device for the pipe blasting according to claim 7, wherein an escape notch (32) is formed at the bottom of the vertical plate (3).

10. The energy-gathered cutting device for the pipe blasting according to the claim 7, characterized in that the vertical plate (3) is in an inverted U shape, and the bottom end of the vertical plate (3) is provided with a reinforcing strip (33) along the direction of the pipe.

Technical Field

The invention relates to the field of explosive energy-gathering cutting, in particular to an energy-gathering cutting device for pipeline blasting.

Background

At present, the natural gas pipeline fracture control test in China simulates the real operation condition of the gas pipeline, and the full-size fracture research of the high-pressure gas pipeline is carried out by adopting a natural gas medium. With the continuous promotion of the steel grade, pipe diameter, pipe thickness and design factor of the steel that the pipeline used, the pipeline can be the ductile fracture characteristic. Research tests determine that the requirement of crack arrest toughness can not only tolerate the initial defect to the maximum extent, but also arrest cracks after ductile fracture cracks initiate, and simultaneously can meet the economic requirement of batch production of pipes.

At present, a natural gas pipeline used in our country test is about 20mm thick, in order to further improve the safety of natural gas transportation, the thickness of the pipeline is continuously improved to 40mm, the crack arrest toughness of the ultra-thick pipeline is researched, and the method has practical significance for the research of the safety of natural gas storage and transportation.

Disclosure of Invention

The invention aims to provide an energy-gathered cutting device for pipeline blasting, which solves the problems that the energy required by the pipeline blasting with larger thickness is higher and the prior art is difficult to realize.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a gather can cutting device for pipeline blasting, is including gathering the cutterbar and being used for installing the installing support of gathering the cutterbar on the pipeline, gather the cutterbar and include explosive box and the pouring box that communicates with explosive box, the bottom surface of pouring box is provided with the V-arrangement groove of falling.

Preferably, the cartridge includes a top cover plate, a cover plate covering under the top cover plate, and end plates provided at both ends of the top cover plate.

Preferably, the cover plate comprises a first side plate, a first bottom plate, a second bottom plate and a second side plate which are sequentially arranged side by side, wherein the distance between the first bottom plate and the second bottom plate is gradually increased along the direction away from the top cover plate.

Preferably, the first side plate, the first bottom plate, the second bottom plate and the second side plate are W-shaped, and the first side plate and the second side plate are perpendicular to the top cover plate.

Preferably, the first side plate, the first bottom plate, the second bottom plate and the second side plate are integrally formed.

Preferably, the bottom of the end plate is provided with a ground foot, and the ground foot is provided with a round hole used for being connected with the mounting bracket.

Preferably, the mounting bracket comprises a vertical plate fixed on the pipeline, a chute is arranged on the vertical plate, and a bolt sequentially penetrates through the chute and the round hole to fix the energy gathering cutter with the mounting bracket.

Preferably, each of the end plates is provided with a corresponding mounting bracket.

Preferably, the bottom of the vertical plate is provided with an avoiding notch.

Preferably, the vertical plate is in an inverted U shape, and a reinforcing strip is arranged at the bottom end of the vertical plate along the direction of the pipeline.

Compared with the prior art, the invention has the beneficial effects of at least one of the following:

the design of the inverted V-shaped cover can enable detonation waves to mix and collect detonation red energy in the top axis part of the shaped charge cover along the directions of the two vertical bevel edges to form a metal jet flow with ultrahigh speed, so that a test pipeline is cut, a penetrating crack parallel to the axial direction of a steel pipe is formed on the pipeline, and the requirement of linear cutting of the pipeline is met. The cutting width of the metal jet on the test pipeline can be adjusted by adjusting the explosion height and the top cone angle, and the cutting depth of the metal jet can be adjusted by adjusting the bottom width of the liner.

The length of pouring box is less than the length of explosive box far away in this embodiment, increases pouring box medicine part and can make mixed explosive after the detonator detonating grow up and reach type of charge cover upper portion after complete, guarantees the detonation cutting effect.

Drawings

Fig. 1 is a front view of a concentrator cutter of the present invention.

Figure 2 is a top view of a concentrator cutter according to the present invention.

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 according to the present invention.

Fig. 4 is a front view of the mounting bracket of the present invention.

Fig. 5 is a top view of the mounting bracket of the present invention.

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 4 according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment discloses a cumulative cutting device for blasting pipelines, which comprises a cumulative cutter shown in figures 1-3 and a mounting bracket shown in figures 4-6 for mounting the cumulative cutter on the pipelines, wherein the cumulative cutter comprises a explosive box 2 and a pouring box 1 communicated with the explosive box 2, and the bottom surface of the pouring box 1 is provided with an inverted V-shaped groove.

The design of the inverted V-shaped cover can enable detonation waves to mix and collect detonation red energy in the top axis part of the shaped charge cover along the directions of the two vertical bevel edges to form a metal jet flow with ultrahigh speed, so that a test pipeline is cut, a penetrating crack parallel to the axial direction of a steel pipe is formed on the pipeline, and the requirement of linear cutting of the pipeline is met. The cutting width of the metal jet on the test pipeline can be adjusted by adjusting the explosion height and the top cone angle, and the cutting depth of the metal jet can be adjusted by adjusting the bottom width of the liner.

Pouring box 1's length is less than the length of explosive box 2 far away in this embodiment, increases 1 powder charge part of pouring box and can make the mixed explosive after the detonator detonating grow up and reach type of charge cover upper portion after complete, guarantees the detonation cutting effect.

In this embodiment, the explosive cartridge 2 may include a top cover plate 27, a cover plate covering below the top cover plate 27, and end plates 25 disposed at both ends of the top cover plate 27, and the cover plate may include a first side plate 21, a first bottom plate 22, a second bottom plate 23, and a second side plate 24 arranged side by side in this order, wherein the distance between the first bottom plate 22 and the second bottom plate 23 gradually increases in a direction away from the top cover plate 27; the first side plate 21, the first bottom plate 22, the second bottom plate 23 and the second side plate 24 may be W-shaped, and the first side plate 21 and the second side plate 24 may be perpendicular to the top cover plate 27; the bottom of the end plate 25 may be provided with a foot, and the foot is provided with a round hole 26 for connecting with a mounting bracket.

Specifically, the energy gathering cutter consists of a W-shaped cover, an end plate 25, a top cover plate 27 and a pouring box 1, wherein the length of the W-shaped cover and the top cover plate 27 is 500 mm. The W-shaped cover is formed by rolling a red copper plate with the thickness of 2mm, the first side plate 21, the first bottom plate 22, the second bottom plate 23 and the second side plate 24 are integrally formed, the first side plate 21 and the second side plate 24 are in the vertical direction, the top edge is fixedly connected with the top cover plate 27 or integrally formed, and the height is 50 mm-80 mm; the angle of the center tip angle formed by the first bottom plate 22 and the second bottom plate 23 is generally 30 to 70 degrees, the bottom width of the W-shaped cover and the width of the top cover plate 27 are 40 to 60 mm. The top cover plate 27 and the pouring box 1 are made of 2mm thick aluminum plates, the pouring box 1 is a hollow cuboid with an upper opening and a lower opening, the length is 100mm, the height is 40mm, and the width is equal to the bottom width of the W-shaped cover; the top cover plate 27 consists of two symmetrical and same cover plates, each of which is 200mm long and equal to the bottom width of the W-shaped cover; the top cover plate 27 and the pouring box 1 are welded together, and the pouring box 1 is positioned in the center of the top cover plate 27. 2 end plates 25 are made of red copper plates with the thickness of 2mm, are welded at two ends of the W-shaped cover in the vertical direction, and are respectively provided with a round hole 26 with the diameter of 5mm at the foot margin part, and the energy gathering cutters can be installed and fixed on the test steel pipe through the guide grooves of the installation support by bolts.

In this embodiment, the mounting bracket includes a vertical plate 3 fixed on the pipeline, as shown in fig. 4 to 6, a sliding groove 31 is provided on the vertical plate 3, and a bolt sequentially passes through the sliding groove 31 and the circular hole 26 to fix the energy-gathering cutter with the mounting bracket.

By fixing the circular hole 26 and the chute 31 at different positions, the setting height of the cumulative cutter can be adjusted. During specific implementation, the mounting bracket can be welded on the pipeline, so that the mounting bracket is more stable.

In this embodiment, each end plate 25 is correspondingly provided with one mounting bracket, and the two mounting brackets are respectively arranged at two ends of the energy gathering cutter, so that the fixing effect on the energy gathering cutter is relatively better; the bottom of the vertical plate 3 can be provided with an avoiding gap 32, and the gap can be matched with the radian of the pipeline.

Further, in this application riser 3 can be the shape of falling the U, 3 bottoms of riser are provided with reinforcing strip 33 along the pipeline direction, improve stability.

The energy-gathered cutting device for blasting the pipeline in the embodiment can be suitable for the working condition that the wall thickness of the pipeline is large, the energy-gathered cutting device is also suitable for the working condition that the wall of the pipeline is thin, and the device is originally designed to be suitable for the natural gas pipeline.

When the energy-gathered cutting device for pipeline blasting is used, the explosive is poured into the explosive box 2 through the pouring box 1, and the mixed explosive is formed by mixing 35% of hexogen, 30% of Taian and 35% of fused trinitrotoluene. Before casting, the cutter is placed into a water tank with the top end upward, and hot water of 100 ℃ is poured into the water tank for preheating. Pouring for many times, and pouring materials along the opening frame of the cutter. And after cooling is finished, the functional column is pulled out of the cutter, and two detonator functional holes are formed in the cutter.

During testing, the mounting support is welded and fixed on the test pipeline, the energy gathering cutter is mounted and fixed on the test steel pipe through the guide groove of the mounting support by using a bolt, the mounting height of the energy gathering cutter is adjustable, and the adjustable range of the mounting height, namely the vertical distance from the bottom end of the explosive height W-shaped cover to the outer surface of the test pipeline, is 10 mm-35 mm. Two-shot electronic detonators are inserted into two functional holes of the energy-gathering cutter, and can be detonated through the detonator and the detonating connecting wire.

The proportion of the Hexoldia schreberi and the Taian in the casting mixture of the trinitrotoluene, the Hexoldia schreberi and the Taian can be adjusted; the mixture of the trinitrotoluene and the hexogen can be settled after standing for a period of time after being melted, and the pouring is preferably completed in three times due to the structural characteristics of the cutter. After the material at the left lower end of the cutter is cooled, the left foot of the cutter die is properly lifted, and the material is poured into the cutter die, so that the right lower end of the cutter is filled with the material. And (4) performing secondary pouring according to the same primary pouring method, after the secondary pouring material is cooled, horizontally placing the cutter mold, and pouring the material to the upper surface of the cutter for three times. And after the third pouring material is cooled, pouring the material to the top end of the opening of the cutter, and stopping pouring. When the material at the opening of the cutter is solidified quickly, the two functional columns are inserted into the center of the pouring box 1 side by side, and finally the shrinkage cavity is poured to enable the liquid level at the opening of the cutter to be flat. During pouring, the same charging amount of the two sides of the energy gathering cutter is ensured, TNT condensation shrinkage cavities can be reduced through hot water preheating and cooling, the charging density of each charging part of the energy gathering cutter is ensured to be consistent, and the condition of uneven cutting is avoided.

The application can improve the energy intensity of the energy-gathered jet flow when the angle of the top cone angle is not changed by increasing the bottom width of the shaped charge liner, so as to achieve the purpose of cutting thicker steel pipes, such as steel pipes with the thickness of 40 mm; the charging part of the pouring box 1 is added, so that the mixed explosive can reach the upper part of the shaped charge liner after the mixed explosive is completely detonated after the detonator is detonated, and the detonation cutting effect is ensured. The pouring is divided into a plurality of times and hot water medium is used for ensuring uniform charging density, and the phenomenon that the part with the length of 500mm cannot be cut through is avoided.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.