WO2009010072A1 - Charge creuse - Google Patents

Charge creuse Download PDF

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Publication number
WO2009010072A1
WO2009010072A1 PCT/EA2007/000004 EA2007000004W WO2009010072A1 WO 2009010072 A1 WO2009010072 A1 WO 2009010072A1 EA 2007000004 W EA2007000004 W EA 2007000004W WO 2009010072 A1 WO2009010072 A1 WO 2009010072A1
Authority
WO
WIPO (PCT)
Prior art keywords
lining
strips
charge according
cumulative charge
facing
Prior art date
Application number
PCT/EA2007/000004
Other languages
English (en)
Russian (ru)
Inventor
Maksim Jurievich Titorov
Original Assignee
Maksim Jurievich Titorov
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maksim Jurievich Titorov filed Critical Maksim Jurievich Titorov
Priority to EA200701333A priority Critical patent/EA200701333A1/ru
Priority to PCT/EA2007/000004 priority patent/WO2009010072A1/fr
Publication of WO2009010072A1 publication Critical patent/WO2009010072A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/028—Shaped or hollow charges characterised by the form of the liner

Definitions

  • the invention relates to the field of pulsed action on various condensed media, namely, impact by shock, and can be used to create high pressures on the surfaces of solid and porous bodies, for example, in cumulative perforators during the second opening of formations in production wells, for loading surfaces volumes filled with liquid or multiphase heterogeneous media, creating holes and craters in solid materials, explosive cutting of metals, compaction of solid and porous media, press Ia powder materials, hardening Me- tallorezhuschego, construction and drilling tool as well as the destruction of material objects.
  • Known cumulative charge containing a housing with a cumulative recess the forming surface of which is made with a variable diameter, decreasing from the base to the top of the recess, explosive and cumulative lining, while forming the surface of the cumulative recess of the body is made in the form of a series of cylindrical grooves, and in the particular case forming the surface of the cumulative recess of the housing is made in the form of a series of grooves, which are truncated cones, the vertices of which are directed to the base of the recess (patent RU 2217686).
  • the disadvantages of the known cumulative charge are its relatively low efficiency and a large spread of penetration results: for example, in a concrete target with an explosive mass of 20-30 g the channel volume is 30-40 cm 3 , the spread of its geometric parameters (inlet diameter and depth) is about fifteen %.
  • the closest to the claimed in its technical essence and the achieved result is a cumulative charge, which contains a metal casing filled with explosives, on the front wall of which an intermediate detonator is installed, and on the opposite side of the casing is a cumulative recess with embossed facing facing its apex towards the detonator .
  • the recess lining is made in the form of a set of annular sections, the transverse profile of each of which has the shape of a semi-oval.
  • the invention allows to increase the penetration ability of the jet in the almost complete absence of pest (patent RU 2193152).
  • the inventive cumulative charge is aimed at increasing the volume of the formed channel or the diameter of the punched hole without increasing the mass of the explosive and the caliber of the charge, as well as reducing instability of the charge.
  • the cumulative charge contains a body in the form of an open shell, an explosive placed inside it and a lining located in the open part of the body with a relief on the surface facing the explosive and / or on the outward surface made of protrusions or recesses in the form of stripes forming polygons.
  • This result is achieved by the fact that at least three protruding non-intersecting strips are made on the surface facing the explosive and on the outward facing surface, while the ratio of the distance between the centers of any of the adjacent strips to the average thickness of the cladding between them differs no more than 20% from the same indicator for other neighboring bands.
  • the indicated result is also achieved by the fact that at least three disjoint strips are made on the facing surface of the cladding, while the ratio of the distance between the centers of any mentioned adjacent strips to the average thickness of the cladding between them differs by no more than 20% from the same indicator for other adjacent lanes. Moreover, all disjoint stripes indicated here must be either protruding or recessed.
  • the indicated result is also achieved by the fact that the strips are made with a rectangular or trapezoidal cross-section.
  • the indicated result is also achieved by the fact that the strips are made with a semi-oval or sinusoidal cross-section.
  • the indicated result is also achieved by the fact that the front surface of the cladding is made with a relief that partially or completely 5 duplicates the relief on the surface facing the explosive.
  • the specified result is also achieved by the fact that the lining is made of copper or its alloys.
  • the indicated result is also achieved by the fact that the cladding is made with a mass from 80 to 120% of the mass of the explosive placed in the case.
  • the specified result is also achieved by the fact that the lining is made in the form of a body of revolution.
  • the indicated result is also achieved by the fact that the lining is made in the form of a spherical segment with a solution angle of 141 ° ⁇ 5 °. 20.
  • the specified result is also achieved by the fact that the lining is made in the form of a cone.
  • the cladding is made in the form of a straight circular cone, disjoint strips of relief are made in the form of circles, and their intersecting 25 strips are made along the generatrices of the cone.
  • the specified result is also achieved by the fact that the cone is made with a solution angle of 47 ° ⁇ 2 °.
  • the specified result is also achieved by the fact that the cone is made with a solution angle of 104 ° ⁇ 4 °.
  • the specified result is also achieved by the fact that the cone is made with a solution angle of 135 ° ⁇ 5 °.
  • the specified result is also achieved by the fact that the cone is made with a solution angle of 156 ° ⁇ 6 °.
  • the execution of the cumulative charge in the form of a charge containing a housing of an open shell, an explosive placed inside it and a lining located in the open part of the housing with a relief on the surface facing the explosive and / or on the surface facing outward, made of protrusions or depressions in the form bands forming polygons, allows to increase the volume of the formed channel or the diameter of the punched hole without increasing the mass of the explosive and the caliber of the charge, as well as reduce the instability the action of the charge.
  • the lining made with the proposed relief plays the role of a kind of spatial modulator in the path of the high-pressure wave front that occurs at the time of the explosion.
  • standing waves are formed on the cladding, which reduce spontaneous vibrations, reduce energy dissipation and, ultimately, significantly increase the breakdown ability of a charge.
  • the ratio of the distance between the centers of any of the mentioned adjacent strips to the average thickness of the lining between them should differ by no more than 20% from the same indicator for other neighboring strips.
  • the wavelength is specified by either protruding or recessed bands.
  • embossed stripes with rectangular, trapezoidal, semi-oval or sinusoidal cross sections.
  • the execution of the facing surface of the lining with a relief that partially or completely duplicates the relief on the surface facing the explosive, or the execution of the facing surface facing the explosive with a relief that partially or completely duplicates the relief on the outward facing surface makes it possible to provide the required thickness distribution lining, which helps to increase the efficiency of the charge.
  • the cladding can be a plate of arbitrary shape (for example, a polygon or an oval with uneven edges, etc.), but it is most appropriate to make the cladding in the form of a body of revolution, for example, a round plate, a spherical segment, part of an ellipsoid of revolution etc.
  • a body of revolution For a body of revolution, the task of obtaining a uniformly deformable cumulative impactor is greatly simplified, while the impulse of the impactor increases.
  • FIG. 1 is a cross-sectional view of one of the possible embodiments of a cumulative charge with a cone facing;
  • FIG. 2 shows an embodiment of a cladding in the form of a flat round plate with a relief in the form of three strips that do not intersect each other (top view and cross section), made on the surface facing the explosive and on the surface facing outward;
  • FIG. 3 shows an embodiment of the cladding in the form of a flat round plate with a relay overlapping strips (top view and cross section) made on the surface facing the explosive or on the surface facing outward; in FIG.
  • FIG. 4 shows the cross sections of the cladding in the form of a flat round plate with one smooth surface and with stripes of rectangular section (a), semi-oval section (b) and with a relief partially or completely duplicating the relief on the surface facing the explosive or outward (c); in FIG. 5 and 6 show embodiments of the facing in the form of circular cones (side view); in FIG. Figures 7–12 show images of real linings used in various structural variants of a cumulative charge.
  • Example 1 The cumulative charge in one embodiment (figure 1) contains a housing 1 of arbitrary shape from a suitable structural material, preferably metal.
  • An initiation hole 2 is made in the bottom of the housing; outside the housing around this hole is a fixture 3 for attaching initiation means, for example, a detonating cord.
  • An explosive 4 and a conical lining 5 are placed inside the casing, on the surface of which the explosive is facing a relief of protrusions (examples of which are shown in Figs. pentagons and hexagons. Creating polygons with more than six angles is not practical.
  • Graphic materials illustrating the essence of the invention show various embodiments of embossed claddings.
  • FIG. 7 shows an embodiment of the lining in the form of a hexagonal plate with a relief of recessed strips forming protruding triangles at the intersection
  • FIG. 8 is a plate in the form of a hexagonal star with a similar relief. Both plates are bent forward in the direction of throwing. Facings made of copper sheet by cold pressing using appropriate dies.
  • FIG. 10 shows a variant of the facing in which, in addition to the central regular hexagon, 18 triangles are made, the facing as a whole has the shape of a spherical segment, with a thickness of six. the square is 2 times the thickness of the triangles, the height of the triangles is 2 times less than the distance between the opposite sides of the hexagon.
  • the facings are made of copper bar by milling, followed by cutting off the plate of the required thickness.
  • claddings are made as follows. A round plate is cut from a sheet blank; the required relief is formed on it by cold pressing. Then, a sector with an appropriate angle is cut from the workpiece; after which the plate is folded into a circular cone or into a pyramid (as in Fig. 11). It is necessary that the connection line runs along one of the relief bands. For conical cladding with small solution angles, the upper part of the cladding is cut off, while it is desirable that the cut also be made along the relief strip. In this case, the cladding sections do not affect the efficiency of the charge.
  • the cumulative charge is used as follows.
  • Several charges with a detonating cord (in the case of the perforator or without it) are lowered into the well and are installed so that they are facing by facing 5 (see Fig. 1) towards the side of the well.
  • An initiating pulse is transmitted along the detonating cord to the explosive 4, which ensures the disruption of charges.
  • the linings are deformed into cumulative impactors, which form holes in the casing and channels in the reservoir around the well.
  • shots are fired using a set of steel plates, duralumin posts or a standard combined target: a particularly strong concrete post (imitating cement stone and rock), a steel plate 10 mm thick (casing wall), a water layer of 10-20 mm , steel plate 6-9 mm (perforator body wall) and air gap.
  • Example 2 For experimental verification of the effect of the ratio of the distance between the centers of adjacent relief bands on the surface facing the explosive to the average thickness of the lining between them, a batch of cumulative charges was made. Each charge contained a steel case with a diameter of 48 mm, a length of 50 mm with a shape similar to that shown in figure 1. Inside the case, 25 g of RDX-based explosive was placed. From the side of the open part of the casing, a cladding made of M1 grade copper was pressed into the explosive. The lining was a hollow straight circular cone with a solution angle of 73 °, a base diameter of 43 mm, a height of 29 mm, and a relief on the surface facing the explosive.
  • the relief was a thickening in the form of four strips 3 mm wide, made in the form of circles, the planes of which were perpendicular to the axis of the cone, and three strips along the generatrices of the cone.
  • the thickness of the lining between the circumferential strips ranged from 0.6 mm to 0.8 mm, and the thickness of the strips was about 0.85 mm. Facing was made as follows. A round-shaped plate was cut out from the sheet blank, the relief described above was formed by cold pressing on it, then a sector was cut to which it was conical with the help of a mandrel.
  • the shooting of the charges was carried out on a set of plates from St.Z. 10 mm thick. The distance between the charges and the target was 30 mm. The holes obtained in the target were measured using a caliper. The measurement results are summarized in table 1. AND
  • Example 3 For experimental verification of the influence of the ratio of the distance between the centers of adjacent strips of relief on the outward facing surface to the average thickness of the lining between them, a batch of cumulative charges was made. Each charge contained a steel case with a diameter of 48 mm, a length of 50 mm with a shape similar to that shown in figure 1. Inside the case, 25 g of RDX-based explosive was placed. From the side of the open part of the casing, a cladding made of M1 grade copper. The lining was a hollow straight circular cone with a solution angle of 73 °, a base diameter of 43 mm, a height of 29 mm, and a relief on the surface facing outward.
  • the relief was a thickening in the form of four strips 3 mm wide, made in the form of circles, the planes of which were perpendicular to the axis of the cone, and three strips along the generatrices of the cone.
  • the thickness of the lining between the circumferential strips ranged from 0.6 mm to 0.8 mm, and the thickness of the strips was about 0.85 mm. Facing was made as follows. A round-shaped plate was cut out from the sheet blank, the relief described above was formed by cold pressing on it, then a sector was cut to which it was given a conical shape using a mandrel.
  • the shooting of charges was carried out on a set of plates from Art. 3 10 mm thick. The distance between the charges and the target was 30 mm. The holes obtained in the target were measured using a caliper. The measurement results are summarized in table 2.
  • Example 4 To determine the optimal ratio of the mass of the lining and the mass of the explosive . substances was made a batch of cumulative charges. Each charge contained a steel case with a diameter of 48 mm and a length of 57 mm with the shape shown in FIG. 1. Inside the case were placed from 15 g to 40 g of hexogen-based explosive. The cladding was made of M1 copper in the form of a straight circular cone with a solution angle of 47 °, a base diameter of 43 mm, a height of 49 mm, and a relief on the surface facing the explosive.
  • the relief was a thickening in the form of six strips 2.5 mm wide, made in the form of circles whose planes were perpendicular to the axis of the cone, and six strips along the generatrices of the cone.
  • the thickness of the lining between the circumferential strips ranged from 0.6 mm to 0.8 mm, and the thickness of the strips was about 0.85 mm.
  • Example 5 To determine the optimal ratio of the mass of the lining and the mass of the explosive was made a batch of cumulative charges. Each charge contained a steel case with a diameter of 48 mm and a length of 57 mm with the shape shown in FIG. 1. Inside the case were placed from 15 g to 40 g of hexogen-based explosive. The cladding was made of M1 copper in the form of a straight circular cone with an opening angle of 47 °, a base diameter of 43 mm, a height of 49 mm, and a relief on the surface facing outward.
  • the relief was a thickening in the form of six strips 2.5 mm wide, made in the form of circles, the planes of which were perpendicular to the axis of the cone, and six strips along the generatrices of the cone.
  • the thickness of the lining between the circumferential strips ranged from 0.6 mm to 0.8 mm, and the thickness of the strips was about 0.85 mm.
  • Example 6 An experimental batch of charges was made as described in example 1, with the same amount of explosive 28 g. Facings were made in the form of straight circular cones with different solution angles (see table 5), but with the same base diameters (with the same caliber charge). The relief consisted of stripes disjoint among themselves, made in the form of circles, and bands intersecting them, running along the generatrices of the cone. The experimental results are shown in table 3.
  • Example 7 In the charge with the housing described in example 1, a lining made of a copper sheet in the form of a spherical segment was pressed in (see table 6). On the facing surface of the explosive, a relief was made in the form of recessed strips forming hexagons. The mass of the explosive placed in the case was 22 g, the cladding caliber was 43 mm. The charges were fired at the following combined target: a concrete column of 0110 mm, covered with sand from the outside, a steel plate 10 mm thick, a water layer of 17 mm, a steel plate of 5 mm and an air gap of 10 mm.
  • Example 8 To determine the shape and volume of the channel obtained in the target, a charge was shot at a metal column (duralumin rod Q70 mm). The charge consisted of the body shown in FIG. 1, an RDX-based explosive with a mass of 28 g, a conical lining with a 46 ° opening angle, with the relief shown in FIG. 5; the distance from the charge to the target was 25 mm. After the charge was triggered in a duralumin column, a channel was obtained in shape close to a truncated cone with an input diameter of 22 mm, a depth of 230 mm, and a bottom diameter of the channel of about 6 mm; the channel volume was about 40 cm 3 .
  • the same charge created a hole in a steel plate with a diameter of 18 mm and a channel in a concrete column with a depth of 400 mm and a bottom diameter of 10 mm; the volume of the channel was over 60 cm 3 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

L'invention vise à augmenter le volume du canal formé ou le diamètre du trou percé sans augmenter le poids de l'explosif ni le calibre de la munition, et à réduire l'instabilité de fonctionnement de la charge. Dans cette invention, la charge cumulative comprend un corps (1) se présentant comme une enveloppe non fermée, de l'explosif (4) disposé autour de cette enveloppe et un revêtement (5) disposé dans la partie ouverte du corps et comportant un relief sur la surface tournée vers l'explosif et/ou vers l'extérieur, qui est constitué de protubérances ou de creux en forme de bandes (6) formant des polyèdres. Le revêtement (5) peut avoir une forme différente et se présenter comme des plaques, des cônes, des segments ou des hémisphères avec un rapport prédéterminé entre la masse de l'explosif (4) et la masse du revêtement utilisé (5).
PCT/EA2007/000004 2007-07-17 2007-07-17 Charge creuse WO2009010072A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EA200701333A EA200701333A1 (ru) 2007-07-17 2007-07-17 Кумулятивный заряд
PCT/EA2007/000004 WO2009010072A1 (fr) 2007-07-17 2007-07-17 Charge creuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EA2007/000004 WO2009010072A1 (fr) 2007-07-17 2007-07-17 Charge creuse

Publications (1)

Publication Number Publication Date
WO2009010072A1 true WO2009010072A1 (fr) 2009-01-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EA2007/000004 WO2009010072A1 (fr) 2007-07-17 2007-07-17 Charge creuse

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WO (1) WO2009010072A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2732553C1 (ru) * 2019-07-29 2020-09-21 Общество с ограниченной ответственностью "Технощит" Облицовка малого прогиба для снарядоформирующего устройства

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218975A (en) * 1950-06-28 1965-11-23 Mark F Massey Shaped charge liner
FR2041498A5 (en) * 1969-04-28 1971-01-29 France Etat Hollow charge loading
US4063512A (en) * 1966-10-05 1977-12-20 The United States Of America As Represented By The Secretary Of The Air Force Armor penetrating projectile
US4590861A (en) * 1983-05-13 1986-05-27 Diehl Gmbh & Co. Insert for a projectile-forming charge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2193152C2 (ru) * 1999-08-19 2002-11-20 Шакиров Рустам Анисович Кумулятивный заряд

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218975A (en) * 1950-06-28 1965-11-23 Mark F Massey Shaped charge liner
US4063512A (en) * 1966-10-05 1977-12-20 The United States Of America As Represented By The Secretary Of The Air Force Armor penetrating projectile
FR2041498A5 (en) * 1969-04-28 1971-01-29 France Etat Hollow charge loading
US4590861A (en) * 1983-05-13 1986-05-27 Diehl Gmbh & Co. Insert for a projectile-forming charge

Also Published As

Publication number Publication date
EA009933B1 (ru) 2008-04-28
EA200701333A1 (ru) 2008-04-28

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