阅读说明：本技术 一种柔性聚能切割索 (Flexible energy-gathering cutting rope ) 是由 马元锦 郭俊雄 张月萍 丁冲 王友 张磊 于 2019-10-21 设计创作，主要内容包括：本发明公开了一种柔性聚能切割索,属于火工结构分离技术领域,该柔性聚能切割索采用分体式结构,包括金属聚能罩(3)、炸药条(2)和非金属保护层(1),非金属保护层(1)底部两端设有凹槽,金属聚能罩(3)两端镶嵌于该凹槽中,金属聚能罩(3)聚能角为α,所述的炸药条(2)设置在金属聚能罩(3)的外表面上,所述的非金属保护层(1)设置在炸药条(2)的外表面上。该新型结构聚能切割索每部分元件均可单独生产,且加工工艺简单,制作的切割索炸药条、聚能罩截面对称性、壁厚尺寸一致性、聚能角(a)形状准确性好,可实现大长度连续自动化生产,合格率由原来70％左右大幅提高到95％以上,提高了生产效率。(The invention discloses a flexible energy-gathering cutting rope, which belongs to the technical field of separation of a fire structure, and adopts a split structure and comprises a metal energy-gathering cover (3), explosive strips (2) and a non-metal protective layer (1), wherein grooves are formed in two ends of the bottom of the non-metal protective layer (1), two ends of the metal energy-gathering cover (3) are inlaid in the grooves, an energy-gathering angle of the metal energy-gathering cover (3) is α, the explosive strips (2) are arranged on the outer surface of the metal energy-gathering cover (3), and the non-metal protective layer (1) is arranged on the outer surface of the explosive strips (2).)

1. The flexible energy-gathering cutting rope is characterized by adopting a split structure and comprising a metal energy-gathering cover (3), explosive strips (2) and a non-metal protective layer (1), wherein grooves are formed in two ends of the bottom of the non-metal protective layer (1), two ends of the metal energy-gathering cover (3) are inlaid in the grooves, the energy-gathering angle of the metal energy-gathering cover (3) is α, the explosive strips (2) are arranged on the outer surface of the metal energy-gathering cover (3), and the non-metal protective layer (1) is arranged on the outer surface of the explosive strips (2).

2. A flexible, energy-concentrating cutting cord according to claim 1, wherein: the anti-corrosion coating further comprises a woven layer (4), and the woven layer (4) is coated with the non-metal protective layer (1).

3. A flexible, energy-concentrating cutting cord according to claim 1, wherein: the plastic woven fabric further comprises an extrusion molding layer (5) which is of a V-shaped structure, and the extrusion molding layer (5) coats the woven layer (4).

4. A flexible, energy-concentrating cutting cord according to claim 1, wherein: the metal energy gathering cover (3) is of a V-shaped structure.

5. A flexible, energy-concentrating cutting cord according to claim 4, wherein: the metal energy gathering cover (3) is made of one of a copper strip, a lead strip, an aluminum strip and a silver strip.

6. The flexible cable of claim 1, wherein the metal shaped hood (3) has a shaped angle α of 45 ° to 90 °.

7. A flexible, energy-concentrating cutting cord according to claim 1, wherein: the explosive strips (2) are flexible explosive strips.

8. A flexible, energy-concentrating cutting cord according to claim 1, wherein: the non-metal protective layer (1) is made of plastic or rubber materials.

9. A flexible, energy-concentrating cutting cord according to claim 2, wherein: the weaving layer (4) is made of polyester yarn and Kevlar fiber yarn.

10. A flexible, energy-concentrating cutting cord according to claim 3, wherein: the extrusion molding layer (5) is processed into a structure with a lug bonding surface by adopting rubber or plastic materials.

Technical Field

The invention relates to an initiating explosive device of an energy-gathering cutting rope, belonging to the technical field of initiating explosive structure separation.

Background

The energy-gathering cutting rope is a high-reliability and high-synchronism linear cutting and separating initiating explosive device, has the main function of cutting and separating a separation object into two parts from a separation surface part by utilizing metal energy-gathering jet flow generated after the energy-gathering cutting rope works, is widely applied to connection and separation links of interstage separation, cutting and cabin opening of a warhead, safe self-destruction of an engine and the like of strategic tactical missiles, carrier rockets, space shuttles and the like, and also can be used in the cutting and separation fields of blasting demolition, submarine salvage operation hulls, steel cables and the like in the civil industry.

The structure of the energy-gathering cutting rope generally adopts a closed metal tube shell made of copper, silver, lead, aluminum and the like, powdery high-energy medicaments such as hexogen, hexanitrostilbene and the like are arranged inside the metal tube, the metal tube is filled with the powdery medicaments with certain bulk density and then is stretched and rolled for many times through a die for forming, the diameter of the metal tube is gradually reduced from thick in the process, the density of the internal filled medicaments is gradually improved, and finally the density of the medicaments required by stable detonation is achieved, but the production efficiency and the qualification rate are lower. The process of loading the powder medicine into the metal tube is influenced by the granularity, the free-running property, the density of an initial medicine loading body, the inner diameter size and the surface finish degree of the metal tube and the like, and in order to ensure the uniformity and the consistency of internal medicine loading, the original medicine loading length of the metal tube is not too long, and the initial density is not too large; the formed totally-enclosed metal shell reduces the flexibility of the metal shell energy-gathering cutting rope due to the cold hardening effect in the stretching and rolling process; manufacturing errors in the forming process cause that the section symmetry, the wall thickness uniformity of the energy-gathering cover, the symmetry of the flux core and the like of the cutting cable are not easy to control and have larger deviation, and the formation of effective metal energy-gathering jet of the cutting cable is influenced, so that the separation performance of the cutting cable is reduced; the wall thickness of the top corner of the energy-gathering cover is thinned in the calendering deformation process in the forming process, local stress is concentrated, even the energy-gathering cover is broken, the environment resistance of the cutting cable is reduced, even faults such as performance reduction, functional failure, explosion and the like occur under the severe using environment condition of weapon equipment, and the working reliability of the cutting cable is reduced.

For example, in "research on the charge linear density and cutting performance of a cutting rope" (national defense basic technology, 03 2010), a cutting rope made of a lead alloy metal pipe with the charge linear density of 12g/m and filled with powdery high explosive is introduced; in a numerical simulation system of the energy-gathered cutting cable cutting target plate (initiating explosive device, No. 1 of 2010), the energy-gathered cutting cable is described to be a cutting cable with an energy-gathered effect, wherein a concave groove is formed on a metal shell detonating cable in a processing mode; the cutting cable is composed of a seamless metal shell and an explosive (the sixth meeting of the national institute of civil blasting materials) and is prepared by preparing an explosion-conducting cable, and drawing a groove of a circular arc-shaped energy-gathering cover at the bottom of the explosion-conducting cable by using a die in the subsequent processing process to realize the energy-gathering effect. In conclusion, due to the limitations of the design and manufacturing process of the existing cutting rope, the popularization and application of the energy-gathering cutting rope separating device type initiating explosive devices in the fields of weaponry, carrier rockets and the like are severely restricted.

The inquired data shows that the design and manufacture of the energy-gathered cutting rope mainly adopts the mode that a closed metal pipe is filled with powdery explosive to manufacture an explosion wire and then manufacture an energy-gathered groove, and the limitations of the working performance, the production and manufacture and the quality control exist in the existing cutting rope design and production mode in China. Through inquiring the prior domestic related patents and documents, the research direction of the energy-gathering cutting rope mainly focuses on the aspects of controlling the technological process, increasing the selection indexes of raw materials and the like, and how to solve the engineering application problem on the structural principle is realized, namely, the novel structural cutting rope has the advantages of high precision, stable performance, good flexibility, simple charging structure, strong environmental resistance, high production efficiency and the like, and has no related report.

Disclosure of Invention

The invention aims to: aiming at the problems of poor charging manufacturability, low efficiency, low percent of pass, difficult accurate control of the shape of the rear section of a finished product, poor symmetry and consistency of the wall thickness dimension, unstable cutting performance, difficult small-diameter bending, low environmental tolerance and the like caused by the preparation of a metal tube closed cutting cable structure by the prior art, the novel structure energy-gathering cutting cable which is firstly combined in a split mode and then packaged in a fully-closed mode is provided.

The specific technical scheme of the invention is as follows:

the utility model provides a flexible can cutting cable, adopts split type structure, gathers can cover, explosive strip and non-metallic protective layer including the metal, and non-metallic protective layer bottom both ends are equipped with the recess, and the metal gathers can the both ends of cover and inlays in this recess, and the metal gathers can the angle of gathering of cover be α, the explosive strip set up and gather at the metal on the surface of cover, non-metallic protective layer set up on the surface of explosive strip.

The flexible energy-gathering cutting cable further comprises a woven layer, the woven layer is coated with a non-metal protective layer, the flexible energy-gathering cutting cable is formed into a closed structure, and the woven layer is formed by weaving polyester yarns and Kevlar fibers with certain strength.

The flexible energy-gathering cutting cable further comprises an extrusion molding layer, the extrusion molding layer is coated with a woven layer and is of a V-shaped structure, the flexible energy-gathering cutting cable is of a closed structure, and the extrusion molding layer is processed into a structure with a supporting lug bonding surface, wherein the structure is made of rubber or plastic materials which have flexibility and can be processed in an extrusion manner.

The nonmetal protective layer is made of flexible plastic or rubber materials and is extruded or molded into a V-shaped shape.

The metal energy-gathering cover is made of copper strips, lead strips, aluminum strips and silver strips which have a certain thickness and good ductility, large mass density and feasible cold processing performance, and is formed into a regular V-shaped structure through cold processing, and the energy-gathering angle α of the metal energy-gathering cover is 45-90 degrees.

The explosive strip adopts a flexible explosive strip and adopts high-molecular bonded explosive (flexible explosive), and the explosive formula mainly comprises commonly used high explosive hexogen, octogen, Taian and the like, wherein the high explosive strip is added with adhesive, plasticizer, aging agent and the like, so that the high explosive strip keeps flexibility, self-sustaining property and elasticity in a certain temperature range and has the characteristics of low mechanical sensitivity, high detonation sensitivity and high output power.

The flexible energy-gathered cutting rope adopts a split structure and comprises three parts of a metal energy-gathered cover, a flexible explosive strip and a non-metal protective layer, and then a layer of relatively dense braided layer is braided on the outer surface of the flexible energy-gathered cutting rope to play the roles of combination, fixation and protection; according to the use requirement, a plastic or rubber protective layer can be extruded on the outer surface of the woven layer to form an installation and use bonding surface, so that the use is convenient; and coating glue or paint on the parts of the explosive strips at the two ends of the energy-gathering cutting rope, which are exposed out of the explosive surface, so as to seal and protect the explosive surface, and finally forming a fully-closed structure. The novel energy-gathered cutting cable structure can realize continuous automatic production with large length, has better environmental adaptability and strong water resistance, acid resistance and corrosion resistance.

Compared with the prior art, the invention has the beneficial effects that:

(1) the flexible energy-gathered cutting rope is of a split structure and comprises three parts, namely a metal energy-gathered cover, a flexible explosive strip and a non-metal protective layer, each part can be independently processed and manufactured, unnecessary scrapping of other medicaments with higher value, the metal energy-gathered cover and the like due to waste products in the manufacturing process is avoided, and the cost is saved;

(2) the independent production and processing technology of the metal energy-gathering cover, the flexible explosive strip and the non-metal protective layer is simple, the processing difficulty is reduced, the qualified rate can be greatly improved to more than 95% from about 70%, particularly, the metal energy-gathering cover is directly processed by a standard metal plate through a die, the flexible explosive strip is pressed or extruded by the die, the manufactured cutting rope explosive strip and the energy-gathering cover have symmetrical cross sections, consistent wall thickness dimension and good shape accuracy of an energy-gathering angle (a), the manufacturing and processing continuity is strong, the appearance is perfect, the production automation is favorably realized, the efficiency is improved, the cost is reduced, and the period is shortened;

(3) the energy-gathered cutting cable structure prepared by the invention has better cutting performance, high environmental adaptability, quality consistency and reliability, and has wide application prospect and huge market potential.

Drawings

FIG. 1 is a schematic representation of structural form (I) of a cumulative cutting cord of the present invention;

FIG. 2 is a schematic representation of structural form (II) of a cumulative cutting cord of the present invention;

FIG. 3 is a schematic view of the split cutting cord structure of the present invention;

FIG. 4 is a schematic view of a non-metal protective layer according to the present invention;

FIG. 5 is a schematic view of a flexible explosive strip according to the present invention;

fig. 6 is a schematic view of the metal concentrator cap of the present invention.

Reference numerals:

1-nonmetal protective layer, 2-explosive strip, 3-metal energy gathering cover, 4-braiding layer and 5-extrusion molding layer.

Detailed Description

For better understanding of the objects, technical solutions and advantages of the present invention, the following description is provided with reference to the accompanying drawings, but the scope of the present invention is not limited to the following embodiments.

As shown in figure 3, the flexible energy-gathering cutting rope adopts a split structure and comprises a metal energy-gathering cover 3, explosive strips 2 and a non-metal protective layer 1, wherein grooves are formed in two ends of the bottom of the non-metal protective layer 1, two ends of the metal energy-gathering cover 3 are inlaid in the grooves, the explosive strips 2 are arranged on the outer surface of the metal energy-gathering cover 3, and the non-metal protective layer 1 is arranged on the outer surface of the explosive strips 2.

As shown in fig. 1, the flexible energy-gathering cutting cable structure further comprises a woven layer 4, the woven layer 4 is coated with the non-metal protective layer 1, the flexible energy-gathering cutting cable is formed into a closed structure, and the woven layer 4 is formed by weaving polyester yarns, Kevlar and other fiber yarns with certain strength.

As shown in fig. 2, the flexible energy-gathering cutting cable structure further comprises an extrusion molding layer 5, the extrusion molding layer 5 coats a woven layer 4, the flexible energy-gathering cutting cable is formed into a closed structure, the extrusion molding layer 5 is provided with an installation and use bonding surface, and a rubber or plastic material which is flexible and can be extruded is processed into a V-shaped structural shape with a support lug bonding surface. Specifically, the extrusion molding layer is generally made of materials such as silicon rubber, nitrile rubber, low-density polyethylene resin and the like.

As shown in fig. 4, the non-metal protective layer 1 is made of flexible plastic or rubber material, and is formed into a required V-shaped structural shape by extrusion molding or compression molding, grooves are formed at two ends of the bottom of the non-metal protective layer and are matched with the metal energy-gathering cover 3 in structure, and the rubber material is generally selected from silicon rubber and nitrile rubber.

As shown in FIG. 6, the metal energy gathering cover 3 is formed into a regular V-shaped structure by cold working of a copper belt, a lead belt, an aluminum belt and a silver belt which are provided with thickness delta (0.1-2.5) mm, good ductility, large mass density and feasible cold working performance, the grade of the copper belt material is red copper T2M, the grade of the lead belt material is lead-antimony alloy PbSb2 or PbSb6 series, the grade of the aluminum belt material is pure aluminum 1050 or 1070 series, the grade of the silver belt material is Ag1, the metal material is selected to be high in purity as much as possible, the tolerance of the thickness dimension of the metal belt material is not more than 0.05, the surface is smooth and flat, no damage and no crack exists, and the energy gathering angle α is generally controlled within the angle range of 45-90 degrees according to the separation performance requirements.

As shown in fig. 5, the explosive strip 2 is a flexible explosive strip, specifically, a polymer bonded explosive (flexible explosive) used in the field is used, the thickness τ of the explosive strip is not less than 2mm, and the explosive formula is mainly formed by adding auxiliary materials such as a bonding agent, a plasticizer, an aging agent and the like into commonly used high explosive hexogen, octogen, taian and the like, so that the explosive strip has the characteristics of keeping flexibility, self-sustaining property and elasticity in a certain temperature range, low mechanical sensitivity, high detonation sensitivity and high output power.

The flexible energy-gathering cutting rope structure is prepared by combining three parts of elements, namely a metal energy-gathering cover 3, an explosive strip 2 and a non-metal protective layer 1, and then weaving a more compact woven layer on the outer surface of the metal energy-gathering cover, so that the combined fixing and protecting effects are achieved; according to the use requirement, a protective layer can be extruded on the outer surface of the woven layer to form an installation and use bonding surface, so that the use is convenient; each element can be independently processed and manufactured. And coating glue or paint on the parts of the explosive strips at the two ends of the energy-gathering cutting rope, which are exposed out of the explosive surface, so as to carry out sealing protection on the explosive surface, and finally forming a fully-closed structure, wherein the two end heads of the cutting rope are sealed by nitrolacquer, shellac paint, three-proofing protective agent and the like which have good sealing effect and combustion-supporting performance.

As shown in figure 1, the cross section size of the energy-gathering cutting rope is adaptively designed according to the characteristics of an object to be cut and separated, the cross section size corresponds to the width K (3-30) mm and the height H (3-30) mm, and the bilateral symmetry degree of the cross section is not more than 0.1. The cutting rope structure form I can be used for a part with an installation supporting structure, is installed on a metal or nonmetal supporting structural part with a corresponding installation fixing groove, and is installed on a separating surface or a separating object at a corresponding separating position;

as shown in fig. 2, the cutting cord structure type ii can be fixed on the separation surface or the separation object at the corresponding separation position by using the mounting lug surface of the cutting cord structure type ii.

The explosive strips and the cross sections of the energy-gathering cover have good symmetry, consistency of wall thickness and size, accuracy of energy-gathering angle shape, good manufacturing and processing continuity, contribution to realizing production automation, improvement of efficiency, reduction of cost and shortening of period.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.