CN215413411U

CN215413411U - Energy-containing composite shaped charge liner cutter structure

Info

Publication number: CN215413411U
Application number: CN202121091152.9U
Authority: CN
Inventors: 刘健峰; 叶琳; 周兆鹏; 汪剑辉; 潘越峰; 姜鹏飞; 常乐; 王月; 陈换新; 谢政
Original assignee: National Academy of Defense Engineering of PLA Academy of Military Science; PLA Rocket Force Engineering Design Research Institute
Current assignee: National Academy of Defense Engineering of PLA Academy of Military Science; PLA Rocket Force Engineering Design Research Institute
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-01-04
Anticipated expiration: 2031-05-20

Abstract

The utility model provides an energy-containing composite liner cutter structure, which comprises an invasion liner, an energy-containing liner, a buffer layer, wedge-shaped charge, an explosion wire and a shell, wherein the invasion liner is arranged in the invasion liner; the shell is of a semi-closed rectangular structure, the upper part of the shell is in a closed form, the bottom of the shell is downward open, and the cross section of the upper part of the rectangular structure is in a regular trapezoid shape; the penetration liner, the energetic liner and the buffer layer are tightly attached together, the buffer layer is tightly attached to the wedge-shaped charge and assembled on the inner side wall of the shell together with the penetration liner, and the energetic liner is coated between the penetration liner and the buffer layer. The energetic composite liner cutter has the structural advantages that: the energy-gathering penetration body coated with the energetic materials can be formed by one-time detonation of the cutter through the composite structure liner with the energetic materials, and the damage effect of 'penetration while blasting' or 'penetration before blasting' on a target can be effectively realized.

Description

Energy-containing composite shaped charge liner cutter structure

Technical Field

The utility model belongs to the field of engineering blasting and special blasting, and particularly relates to an energy-containing composite shaped charge liner cutter structure.

Background

Linear shaped charges are typically shaped charges, and after the charges are detonated, the linear metal shield collapses under the action of the explosive product to form a high-speed "blade" -shaped metal jet. The explosive charge has strong cutting capability, can be used for manufacturing various explosive cutters, and can be used for special conditions which cannot be implemented by conventional mechanical process means (such as sawing, grinding, turning, gas cutting and the like), such as high altitude rocket separation, underwater cutting, accurate blasting of high-rise steel structures and the like. The linear shaped charge technology has the advantages of small volume, small charge amount, convenient carrying, concentrated energy, reliable action and the like, and is widely applied to military and civil use.

The patent application CN85105789 discloses a novel method for cutting marble and granite, and the double-sided energy-gathering cutter designed by the utility model is suitable for blasting of solid media, particularly suitable for controlled blasting in which the media needs to be cut into a certain shape, and has obvious effect on reducing production cost and improving blasting quality. The patent CN210877797U discloses an underwater tubular column energy gathering cutter, which is novel in structure, applicable to cutting operation of underwater tubular columns with different pipe diameters, strong in adaptability and good in cutting effect. Patent CN108867416B discloses a large-scale steel bridge cable member cutting device, the utility model utilizes linear energy-gathering cutters to blast and cut cable members, the blasting equipment needed is relatively less, the blasting cuts are regular, the charging setting is simple and convenient, and the secondary hazard effect is small.

Through the research, the prior art means mainly optimizes and designs the parameters of the cutter (including selecting a high-quality metal shaped charge cover, high-energy explosive, special-shaped charge, an initiation mode and the like) continuously, so that the speed of the cutter-shaped energy-gathering penetration body is continuously improved, the length of the cutter-shaped cutting body is continuously increased, and the cutting capability of the cutter is continuously improved. The existing designed energy-gathering cutter mainly utilizes the cutting effect of a forming energy-gathering penetration body after the cutter is detonated to realize effective cutting on a target, and basically does not consider the damage and destruction effect after the target.

Disclosure of Invention

Aiming at the problems that the cutting capability of the energy-gathering cutter in the prior art is limited and the damage and destruction effects after the target are basically not considered, the utility model provides the energy-containing composite liner cutter structure which is simple to manufacture and strong in practicability.

In order to achieve the purpose, the utility model provides the following technical scheme: an energy-containing composite liner cutter structure comprises an invasion liner, an energy-containing liner, a buffer layer, a wedge-shaped charge, a detonating fuse and a shell; the shell is of a semi-closed rectangular structure, the upper part of the shell is in a closed form, the bottom of the shell is downward open, and the cross section of the upper part of the rectangular structure is in a regular trapezoid shape; the penetration liner, the energetic liner and the buffer layer are tightly attached together, the buffer layer is tightly attached to the wedge-shaped charge and assembled on the inner side wall of the shell together with the penetration liner, and the energetic liner is coated between the penetration liner and the buffer layer.

Furthermore, the basic configuration of the penetration liner is in a long sheet shape, the cross section of the penetration liner is in any one of a wedge shape, an arc shape, an elliptic arc shape and a hyperbolic shape, when the penetration liner is arranged, the rising part of the sheet-shaped arch faces upwards, the cone angle is in the range of 60-100 degrees, the wall thickness is in the range of 0.06-0.10 times the width of the bottom of the wedge-shaped charge.

Furthermore, two sides of the inner wall of the shell, which are close to the bottom, are provided with transverse linear grooves for matching with the penetration liner and the buffer layer, and two side edges of the penetration liner are provided with lugs for assembling with the linear grooves of the shell and the shell.

Furthermore, the configuration of the buffer layer is the same as that of the penetration liner, the edges of two sides of the buffer layer are provided with lugs which can be matched with the linear grooves of the shell, the lugs of the buffer layer and the lugs of the penetration liner are tightly attached together and are matched with the linear grooves of the shell together, a closed space formed by the buffer layer and the shell in an upward surrounding mode forms wedge-shaped charge, and the taper angle value range of the buffer layer is the same as that of the penetration liner.

Furthermore, the calibers of the penetration liner and the buffer layer are larger than the calibers of the energetic liner, and the energetic liner is in a long sheet shape attached with the penetration liner and the buffer layer and is embedded between the penetration liner and the buffer layer.

Furthermore, free surfaces exist between any two of the penetration liner, the energetic liner and the buffer layer, and the penetration liner, the energetic liner and the buffer layer can freely slide.

Further, the thickness of the shell is 0.01 times of the width of the wedge-shaped charge, and the shell is made of aluminum alloy or stainless steel.

Furthermore, the material of the penetration liner is pure metal with high density and good plasticity or tungsten-copper alloy and tungsten-iron-nickel alloy; the energetic liner is made of Zr-based amorphous alloy or PTFE/Al active material; the buffer layer is made of rubberized fabric plastic or foam plastic.

Furthermore, three detonating cords are arranged at the center of the top of the wedge-shaped charge and at the corners of two sides respectively and are distributed along the transverse position of the wedge-shaped charge. .

Furthermore, the three detonating cords are arranged in parallel, one end of each detonating cord is provided with a detonator, and the distances between the three detonating cords and the top of the buffer layer are equal.

The energetic composite shaped charge liner cutter has the structural advantages that: by arranging the composite structure liner with the energetic material, the energy-gathering penetration body which coats the energetic penetration body or the energy-gathering penetration body and the energetic penetration body which are separated from each other at the front and back can be formed by one-time detonation of the cutter, and the damage effect of 'penetration while blasting' or 'penetration before blasting' can be effectively realized. In addition, the end of the cutter adopts three detonating cords which are arranged at equal intervals with the liner and are detonated simultaneously, so that the length and the speed of the forming energy gathering penetration body are obviously improved, and the cutting capability of the cutter is further improved. Compared with the single cutting function of the traditional linear energy-gathered cutter, the composite structure liner cutter with the energetic material provided by the utility model has the advantages that the cutting capability on the target is obviously improved, and the damage mode on the cut target can be increased, wherein the damage mode comprises the damage effect on the target and the cutting and blasting coupling damage effect after the target is cut.

Drawings

FIG. 1 is a schematic diagram of a cutter structure for an energetic composite liner;

FIG. 2 is a schematic view of a composite penetration cutter wrapped around an energetic composite liner;

fig. 3 is a schematic view of two separate penetration bodies of penetration cutter and energetic cutter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The energetic composite liner cutter structure comprises an invasive liner 1, an energetic liner 2, a buffer layer 3, a wedge-shaped charge 4, a detonating fuse 5 and a shell 6.

As shown in figure 1, the shell 6 is a semi-closed long rectangular structure, the cross section of the upper part of the rectangular structure is in a regular trapezoid shape, the upper part of the shell 6 is in a closed shape, the bottom of the shell is in a downward open shape, and the two sides of the inner wall of the shell 6, which are close to the bottom, are provided with transverse linear grooves for matching with the penetration liner 1 and the buffer layer 3. The shell 6 can be made of aluminum alloy or stainless steel and is machined in a machining or casting mode, and the thickness of the shell 6 is 0.01 time of the width of the wedge-shaped charge 4.

The penetration liner 1, the energetic liner 2 and the buffer layer 3 are closely attached together as a core component of an energy-gathering charge structure, and the configuration of the buffer layer 3 is the same as that of the penetration liner 1. Free surfaces exist between any two of the three parts and can freely slide, and the three parts can be naturally connected and transited.

The basic configuration of the penetration liner 1 is in a long sheet shape, the cross section can be in various forms such as a wedge shape, an arc shape, an elliptic arc shape, a hyperbolic shape and the like, the arch part of the sheet-shaped energy-gathering liner faces upwards when the penetration liner 1 is arranged, and the edges of two sides of the penetration liner 1 are provided with convex blocks which can be matched with the linear grooves of the shell 6. The liner 1 is pierced downward to form a cavity with the open portion of the housing 6. The taper angle of the penetration liner 1 ranges from 60 degrees to 100 degrees, and the wall thickness of the penetration liner 1 ranges from 0.06 times to 0.10 times the width of the wedge-shaped charge 4 of the cutter as the recommended value delta.

The calibers of the penetration liner 1 and the buffer layer 3 are larger than the calibers of the energetic liner 2, the energetic liner 2 is covered between the penetration liner 1 and the buffer layer 3, and the energetic liner 1 is jointed with the penetration liner 1 and the buffer layer 3 in a long sheet shape and is embedded between the penetration liner 1 and the buffer layer 3. The taper angle of the energy-containing liner 2 ranges from 60 degrees to 100 degrees, and the wall thickness of the energy-containing liner 2 ranges from 0.03 to 0.06 times the width of the wedge-shaped charge 4 of the cutter. The buffer layer 3 and the penetration liner 1 have the same structure, and the two side edges are provided with lugs which can be matched with the linear grooves of the shell 8, namely, the lugs of the buffer layer and the lugs of the penetration liner 1 are tightly attached together and are matched with the linear grooves of the shell 6 together. The arch-shaped part of the buffer layer 3 and the closed space surrounded by the shell 6 upwards form a wedge-shaped charge 4, the buffer layer 3 is tightly attached to the wedge-shaped charge, the taper angle value range of the buffer layer is the same as that of the penetration liner 1, the wall thickness value range fully considers the impact effect of detonation waves generated after the wedge-shaped charge is initiated on the energetic liner 2, and the wall thickness is preferably selected according to the condition that the detonation waves generated after the explosive is initiated cannot impact the detonation of the energetic liner 2. The invasion liner 1, the energetic liner 2 and the buffer layer 3 are machined by a mechanical manufacturing or casting mode.

The material of the penetration liner 1 is pure metal material with high density and good plasticity, mainly comprising Cu, Fe, W, Ta and the like, or some alloys such as tungsten-copper alloy and tungsten-iron-nickel alloy. The energetic liner 2 is made of Zr-based amorphous alloy, PTFE/Al active material or inert explosive and other high-energy density materials. The buffer layer 3 is made of inert materials with good anti-knock performance, including rubberized fabric plastic or foam plastic.

The wedge-shaped charge 4 is filled with main charge, the main charge can be selected from high-energy explosive such as B explosive, TNT and the like, the explosive detonation velocity can reach 7000-8500m/s, and the charge density needs to reach 1.7-1.9g/cm³。

The detonating cords 5 are used as the detonating devices of the energy-containing composite shaped charge liner cutter structure, and three detonating cords are arranged in total. The wedge-shaped powder charge 4 is respectively arranged at the center of the top of the wedge-shaped powder charge 4 and the corners of two sides and is distributed along the transverse position of the wedge-shaped powder charge 4. The three detonating cords are arranged in parallel, one end of each detonating cord is provided with a detonator for simultaneously detonating the detonating cords, and the distances between the three detonating cords and the top of the buffer layer are equal. After the three detonating cords are detonated at a high speed line, conical detonation waves are formed in main explosive, the conical detonation waves are propagated at equal intervals in the wedge-shaped explosive charge 4 and then collide and are overlapped at the top of the buffer layer 3, the detonation wave pressure is obviously improved, and the detonation waves with the improved detonation pressure sequentially act on the top, the middle position and the lower corner of the buffer layer 3, so that the speed and the length of the formed energy-gathered cutting body and the cutting capacity of the cutter are further improved.

The cutting capability of the linear energy gathering cutter is extremely sensitive to the explosive height, the shaped energy gathering penetration body of the cutter is easy to break when the explosive height is too high, and the penetration body cannot be completely formed when the explosive height is too low, and both the two conditions can obviously influence the cutting capability of the cutter. The designed cutter explosion height is suitable for selecting the position where the head of the shaped energy gathering penetration body of the cutter penetration liner 1 just begins to break as the favorable explosion height, and the recommended value is 2cm-5 cm.

The action process of the energetic composite shaped charge liner charge structure after detonation is as follows:

the energetic composite shaped charge liner charging structure adopts a three-line end detonating mode, three detonating cords 5 arranged in parallel are detonated to form conical detonation waves in main explosive, the conical detonation waves are transmitted at equal intervals in the wedge-shaped charges 4 and then collide and detonate at the top of the shaped charge liner, and the detonation wave pressure is obviously improved. This detonation wave that detonation pressure is showing and is improving at first propagates to buffer layer 3, and the detonation wave acts on buffer layer 3 "bow" in proper order and plays partial top, both sides position and lower angle, and buffer layer 3 fully absorbs the detonation wave energy, reduces the detonation wave to the impact pressure of containing ability type of medicine cover 2, avoids containing ability type of medicine cover 2 broken or too early emergence reaction, plays the guard action to containing ability type of medicine cover 2.

After passing through the buffer layer 3, the intensity of the detonation wave peak value is obviously reduced and the detonation wave peak value sequentially starts to act on the energetic liner 2 and the penetration liner 1. The buffer layer 3, the energy-containing liner 2 and the penetration liner 1 start to turn over, deform and move forwards under the combined action of detonation waves and detonation products, the buffer layer 3 inevitably collides with the energy-containing liner 2 when moving forwards in the process and starts to drive the energy-containing liner 2 to deform and axially move forwards, the energy-containing liner 2 inevitably collides with the penetration liner 1 when moving forwards and starts to drive the penetration liner 1 to deform and axially move forwards, and finally the penetration liner 1 is separated from the warhead to move forwards firstly, and then the buffer layer 3 and the energy-containing liner 2 start to penetrate the penetration liner 1 under the action of subsequent detonation waves and detonation products and the action process is repeated again.

Under the mutual collision action of detonation waves, detonation products, a buffer layer 3, an energy-containing liner 2 and a penetration liner 1, the energy-containing liner 2 and the penetration liner 1 are continuously accelerated, the top of the penetration liner 1 firstly receives the action of the detonation waves and starts to move forwards along the open end of a metal shell, finally the head of an energy-gathered cutting penetration body is formed, the tail of the energy-containing liner 2 is later than the tail of the penetration liner 1 which receives the action of the detonation waves and forms the tail of the energy-gathered cutting penetration body, the energy-gathered penetration body is continuously stretched to form an energy-gathered penetration cutting body similar to a blade type due to high head speed and low tail speed in the forming process of the energy-gathered penetration body, and the energy-containing penetration body sequentially acts on a target from the head to the tail in sequence when the target is met.

Because a free surface exists between the penetration liner 1 and the energetic liner 2 and can move freely, the cutters can be detonated once through reasonable structural design of the energy-gathering cutters and selection of liner materials to form a composite penetration cutter (shown in figure 2) with the penetration liner 1 covering the energetic liner 2 or two separate penetration cutters (shown in figure 3) with the penetration cutter and the energetic cutter at the front and the back respectively, and the damage and destruction capability of cutters aiming at different striking targets is obviously improved. For example, the penetration liner 1 adopts a low-density material, the energetic liner 2 adopts a high-density material or adopts a large-cone-angle liner and other technical means, and the penetration cutting body and the energetic cutting body are respectively two separated penetration bodies before and after the cutter is detonated and is more easily formed; on the contrary, the composite penetration cutting body of the penetration liner 1 covered by the energetic liner 2 is easier to form. When the linear energy-gathering cutter is formed to penetrate the composite penetrating cutting body of the liner 1 coated with the energy-containing liner 2, the destructive effect of 'cutting while blasting' on the target can be realized; when the linear energy-gathering cutter is respectively an penetration cutting body and two separated penetration bodies containing energy cutting bodies before and after forming, the front penetration cutting body is used for cutting and stripping surface materials of the composite structure, and the rear energy-containing cutting body is used for blasting and damaging a main body structure of a target, so that the damage and damage effect of cutting first and blasting later on the target can be realized.

The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Those skilled in the art will appreciate that the utility model may be practiced without these specific details.

Claims

1. The utility model provides a contain compound shaped charge cover cutter structure which characterized in that: the explosive-proof shell comprises a penetration shaped charge liner, an energy-containing shaped charge liner, a buffer layer, wedge-shaped charge, an explosion wire and a shell, wherein the shell is of a semi-closed rectangular structure, the upper part of the shell is in a closed form, the bottom of the shell is downward open, and the cross section of the upper part of the rectangular structure is in a regular trapezoid shape; the penetration liner, the energetic liner and the buffer layer are tightly attached together, the buffer layer is tightly attached to the wedge-shaped charge and assembled on the inner side wall of the shell together with the penetration liner, and the energetic liner is coated between the penetration liner and the buffer layer.

2. The energetic composite liner cutter structure according to claim 1, wherein: the basic configuration of the penetration liner is in a long sheet shape, the cross section is in any one of a wedge shape, an arc shape, an elliptic arc shape and a hyperbolic shape, when the penetration liner is arranged, the rising part of a sheet-shaped arch is upward, the taper angle value range is 60-100 degrees, the wall thickness value range is 0.06-0.10 times the width of the bottom of the wedge-shaped charge.

3. The energetic composite liner cutter structure according to claim 2, wherein: and the two sides of the inner wall of the shell are provided with transverse linear grooves close to the bottom and used for being matched with the penetration liner and the buffer layer, and the edges of the two sides of the penetration liner are provided with lugs which are assembled with the linear grooves of the shell and the shell.

4. The energetic composite liner cutter structure according to claim 3, wherein: the buffer layer has the same configuration as the penetration liner, the edges of two sides of the buffer layer are provided with convex blocks which can be matched with the linear grooves of the shell, the convex blocks of the buffer layer and the convex blocks of the penetration liner are tightly attached together and are matched with the linear grooves of the shell together, the buffer layer and the shell form a closed space which is surrounded upwards to form wedge-shaped charge, and the taper angle value range of the buffer layer is the same as that of the penetration liner.

5. The energetic composite liner cutter structure according to any one of claims 3 and 4, wherein: the calibers of the penetration liner and the buffer layer are larger than that of the energetic liner, and the energetic liner is in a long sheet shape attached with the penetration liner and the buffer layer and is embedded between the penetration liner and the buffer layer.

6. The energetic composite liner cutter structure according to claim 5, wherein: free surfaces exist between any two of the penetration liner, the energetic liner and the buffer layer and can freely slide.

7. The energetic composite liner cutter structure according to any one of claims 1 to 4, wherein: the thickness of the shell is 0.01 times of the width of the wedge-shaped charge, and the shell is made of aluminum alloy or stainless steel.

8. The energetic composite liner cutter structure according to any one of claims 1 to 4, wherein: the material of the penetration liner is pure metal with high density and good plasticity or tungsten-copper alloy and tungsten-iron-nickel alloy; the energetic shaped charge liner is made of Zr-based amorphous alloy, PTFE/Al active material or inert explosive; the buffer layer is made of rubberized fabric plastic or foam plastic.

9. The energetic composite liner cutter structure according to any one of claims 1 to 4, wherein: and three detonating cords are respectively arranged at the center of the top of the wedge-shaped charge and the corners at two sides and are distributed along the transverse position of the wedge-shaped charge.

10. The energetic composite liner cutter structure according to claim 9, wherein: the three detonating cords are arranged in parallel, one end of each detonating cord is provided with a detonator, and the distances between the three detonating cords and the top of the buffer layer are equal.