Multifunctional launch canister

Abstract

The utility model discloses a multifunctional launch canister which comprises an aluminum alloy lining, a composite middle lining, a composite longitudinal rib and an outer skin layer which are sequentially arranged from inside to outside in the radial direction. A plurality of composite longitudinal ribs are arranged in the circumferential direction, each composite longitudinal rib comprises a protruding part and turnups located on the two sides of the protruding part, the turnups are glued with the composite middle lining, the outer circumferential face of the protruding part is connected with the outer skin layer, the space between the composite middle lining and the outer skin layer is divided into a plurality of sections through the composite longitudinal ribs in the circumferential direction, and the sections are connected with the outer skin layer. A heat preservation layer and an anti-penetration protection layer are laid in each interval, and the heat preservation layers and the anti-penetration protection layers located on the inner sides and the outer sides of the protruding parts are arranged in a staggered mode. According to the multifunctional launch canister, the inner layer and the outer layer of the canister body are connected through the composite longitudinal bars, meanwhile, through reasonable arrangement of materials of all the layers, the mechanical property of the launch canister is high, the penetration protection performance, the electromagnetic shielding performance and the heat preservation and heat insulation performance are high, and the requirements for storage, hoisting, transportation, erecting, launching and other work of the launch canister are met.

Description

Technical Field

[0001] The utility model relates to the technical field of launching tubes, in particular to a multifunctional launching tube. Background Art

[0002] As modern military operations place increasingly higher demands on weapon systems, composite launch tubes that combine mechanical properties, thermal insulation properties, and electromagnetic shielding properties have been gradually developed and applied.

[0003] However, the launch tubes in the prior art either have a single function, such as the launch tube disclosed in patent number CN202010824801.5, which consists of an inner tube and an outer tube. In order to take into account the requirements of low weight and the connection between the inner and outer tubes, it is proposed to use longitudinal ribs to co-solidify the inner and outer tubes, but the launch tube is not designed for heat preservation, penetration protection, etc. Or the structural strength cannot be guaranteed after combining multiple functions, and the composite materials with different functions are simply laid in sequence, without considering the connection strength between different materials or the structural strength of the entire tube, resulting in the launch tube being unable to meet the higher pressure resistance requirements.

[0004] Therefore, how to design a launch tube with high pressure resistance and diversified functions is a technical problem that needs to be solved at present. Utility Model Content

[0005] In order to solve the technical problems in the prior art that the launch tube has a single function or cannot ensure the pressure resistance of the launch tube while realizing multiple functions, the utility model provides a multifunctional launch tube to solve the above problems.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a multifunctional launching tube, comprising an aluminum alloy inner lining, a composite middle lining, a composite longitudinal rib and an outer skin layer which are arranged in sequence from the inside to the outside along the radial direction; the composite longitudinal ribs are arranged in plurality along the circumferential direction, each composite longitudinal rib comprises a protrusion and flanges located on both sides of the protrusion, the flanges are bonded to the composite middle lining, the outer peripheral surface of the protrusion is connected to the outer skin layer, the composite longitudinal ribs divide the space between the composite middle lining and the outer skin layer into a plurality of intervals along the circumferential direction, a thermal insulation layer and an anti-penetration protection layer are laid in each interval, and the thermal insulation layer and the anti-penetration protection layer located on the inner and outer sides of the protrusion are staggered.

[0007] Furthermore, the thermal insulation layer is aerogel laid in layers.

[0008] Furthermore, the anti-penetration protection layer is a laminated UHMWPE composite material.

[0009] Furthermore, the inner surface of the anti-penetration protection located outside the raised portion and the inner surface of the composite longitudinal reinforcement are on the same arc surface.

[0010] Furthermore, the composite middle liner, composite longitudinal reinforcement and outer skin layer are all made of carbon fiber composite materials.

[0011] Furthermore, the composite middle liner comprises a glass fiber middle liner which is arranged in close contact with the aluminum alloy inner liner, and the glass fiber middle liner is formed of glass fiber or glass fiber felt.

[0012] Furthermore, a shielding net is provided on the inner side of the outer skin layer.

[0013] Furthermore, the thickness of the aluminum alloy lining is 7mm to 8mm, the thickness of the composite middle lining is 4mm to 6mm, the thickness of the composite longitudinal reinforcement is 4mm to 6mm, the thickness of the thermal insulation layer is 15mm to 18mm, the thickness of the anti-penetration protection layer is 15mm to 18mm, the thickness of the shielding net is 0.095mm to 0.097mm, and the thickness of the outer skin layer is 4mm to 6mm.

[0014] Furthermore, the angle between the outermost laying angle of the composite middle liner and the central axis of the launch tube is 45° to 60°.

[0015] Furthermore, the angle between the outermost laying angle of the outer skin layer and the central axis of the launch tube is 80° to 90°.

[0016] The beneficial effects of the utility model are:

[0017] The multifunctional launching tube described in the utility model adopts composite longitudinal ribs to connect the inner and outer layers of the tube body. At the same time, through the reasonable arrangement of the materials of each layer, the launching tube has the characteristics of high mechanical properties, penetration protection performance, electromagnetic shielding performance and strong thermal insulation performance. The overall weight is light, which meets the basic performance requirements and functional requirements of the launching tube for storage, lifting, transportation, erection and launching. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a cross-sectional view of the end face of the multifunctional launching tube described in the utility model;

[0020] Figure 2 yes Figure 1 Enlarged view of point a in the middle.

[0021] In the figure, 1. aluminum alloy lining, 2. composite middle lining, 3. composite longitudinal reinforcement, 301. raised part, 302. flange, 4. outer skin layer, 5. thermal insulation layer, 6. anti-penetration protection layer, 7. shielding net, 8. glass fiber middle lining. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] like Figure 1-Figure 2 As shown, a multifunctional launching tube comprises an aluminum alloy inner liner 1, a composite middle liner 2, a composite longitudinal rib 3 and an outer skin layer 4 which are arranged in sequence from the inside to the outside along the radial direction; a plurality of composite longitudinal ribs 3 are arranged along the circumferential direction, each composite longitudinal rib 3 comprises a protrusion 301 and flanges 302 located on both sides of the protrusion 301, the flanges 302 are bonded to the composite middle liner 2, the outer peripheral surface of the protrusion 301 is connected to the outer skin layer 4, the composite longitudinal ribs 3 divide the space between the composite middle liner 2 and the outer skin layer 4 into a plurality of intervals along the circumferential direction, a thermal insulation layer 5 and an anti-penetration protection layer 6 are laid in each interval, and the thermal insulation layer 5 and the anti-penetration protection layer 6 located on the inner and outer sides of the protrusion 301 are staggered.

[0024] In the present utility model, multiple composite longitudinal bars 3 are used to connect the inner and outer layers of the launch tube. The composite longitudinal bars 3, the composite middle liner 2 and the outer skin layer 4 mainly play the role of strengthening the structural strength. The connection of the three can ensure the internal and external connection strength of the tube, avoid the reduction of the pressure resistance of the tube due to insufficient connection strength between other functional layers, and the tube is not easily affected by the thermal expansion coefficient and cause the connection relationship to break. In addition, inside and outside the composite longitudinal bars 3, the laying positions of the thermal insulation layer 5 and the anti-penetration protection layer 6 are opposite, that is, the two are laid in an offset manner, so that they are no longer a single material in the circumferential direction. The composite longitudinal bars 3 divide the tube into multiple sections in the circumferential direction. When the temperature suddenly changes and causes the expansion amount of different materials to change, each layer of material can adjust the radial deformation on the inside and outside of the composite longitudinal bars 3 to reduce the circumferential dislocation, thereby avoiding the weakening of the connection strength caused by the dislocation and offset between adjacent materials, and reducing the influence of different material parameters on the structural strength.

[0025] In addition to solving the stress problem at the connection points of each layer, the launch tube also needs to solve the stress concentration problem of the overall structure. The more serious the stress concentration phenomenon is, the greater the possibility of the launch tube exploding. The internal pressure and bending force that the launch tube as a whole is subjected to under the same working conditions are mainly related to the thickness distribution of each layer of material and the material selection.

[0026] The insulation layer 5 is a stacked aerogel. Aerogel has the characteristics of low density and ultra-low thermal conductivity, complete hydrophobicity and good fire retardant properties. The insulation layer 5 can be made of aerogel felt, and the material can be cut at will. The aerogel is laid and cut along the surface, and can be fixed with a pressure-sensitive tape. The anti-penetration protection layer 6 is a stacked UHMWPE composite material. The UHMWPE composite material is an ultra-high molecular weight polyethylene fiber material, which can be machined into a specified arc shape for laying and fixing.

[0027] The composite middle liner 2, the composite longitudinal ribs 3 and the outer skin layer 4 are all made of carbon fiber composite materials. A shielding net 7 can be arranged on the inner side of the outer skin layer 4 to play the role of electromagnetic shielding.

[0028] Preferably, the inner surface of the anti-penetration protection located outside the raised portion 301 is on the same arc surface as the inner surface of the composite longitudinal reinforcement 3, so that the bonding area between the entire composite longitudinal reinforcement 3 and the composite middle liner 2 can be increased. The composite longitudinal reinforcement 3 can be connected to the composite longitudinal reinforcement 3 not only through the internal anti-penetration protection layer 6, but also through the flange 302. When fixed, the inner surface of the flange 302 of the composite longitudinal reinforcement 3 is directly bonded to the composite middle liner 2.

[0029] For the aluminum alloy liner 1 made of metal and the composite middle liner 2 made of composite material, considering the different thermal expansion coefficients between the two, there is a phenomenon of heteroelectric corrosion. The utility model preferably lays a glass fiber middle liner 8 between the aluminum alloy liner 1 and the composite middle liner 2. The glass fiber middle liner 8 is formed of glass fiber or glass fiber felt. The thickness of the glass fiber middle liner 8 is 0.3mm to 0.5mm. The glass fiber middle liner 8 uses high-toughness resin to isolate the heteroelectric corrosion between the carbon fiber and the metal liner to avoid delamination of the two.

[0030] The thickness of each material has a certain influence on the mechanical properties, functionality and quality of the launch tube. In the preferred embodiment of the present invention, the thickness of the aluminum alloy lining 1 is 7mm~8mm, the thickness of the composite middle lining 2 is 4mm~6mm, the thickness of the composite longitudinal rib 3 is 4mm~6mm, the thickness of the thermal insulation layer 5 is 15mm~18mm, the thickness of the anti-penetration protection layer 6 is 15mm~18mm, the thickness of the shielding net 7 is 0.095mm~0.097mm, and the thickness of the outer skin layer 4 is 4mm~6mm.

[0031] The influence of thickness changes of each layer on the internal pressure resistance of the cylinder is: composite middle liner 2 = outer skin layer 4 > aluminum alloy inner liner 1, and the influence of thickness changes of each layer on the bending resistance of the cylinder is: outer skin layer 4 > composite middle liner 2 > aluminum alloy inner liner 1. The thickness changes of other functional layers have the weakest influence on the mechanical properties. When the composite middle liner 2, outer skin layer 4 and composite longitudinal reinforcement 3 of the same material are selected with a thickness of 4mm to 6mm, the mechanical properties of the cylinder can meet the specified requirements while ensuring that the quality of the cylinder is at a lower value.

[0032] For the aluminum alloy lining 1, its metal material can ensure good mechanical properties. Through simulation experiments, it is found that the lower the thickness of the aluminum alloy lining 1, the greater the stress on the aluminum alloy lining 1, and the increase in the thickness of the aluminum alloy lining 1 will increase the cost. Combined with the data in Table 1, comparing Scheme 1 and Scheme 3, when the thickness of other layers is consistent and the internal pressure or bending force is consistent, when the aluminum alloy lining 1 is 5mm, the maximum stress on the cylinder and the corresponding stress deformation are greatly increased compared with when the thickness of the aluminum alloy lining 1 is 7mm, and the possibility of explosion is greater. The same is true for Scheme 2 and Scheme 4. Comparing Scheme 1 and Scheme 2, since the composite middle lining 2 and the outer skin layer 4 are made of the same material, the outer skin layer 4 is thickened while the composite middle lining 2 is thinned, which has little effect on the mechanical properties of the cylinder.

[0033] Table 1 Simulation results of different launch tube structure schemes

[0034]

[0035] For the composite middle liner 2 and outer skin layer 4, which have a greater impact on mechanical properties, the laying angle of the material also has a certain influence on the stress. When the angle between the outermost laying angle of the composite middle liner 2 and the central axis of the launch tube is 45°, the bending performance of the launch tube is optimal. When the angle between the outermost laying angle of the composite middle liner 2 and the outer skin layer 4 and the central axis of the launch tube is 80°~90°, the internal pressure resistance of the launch tube is optimal. The utility model combines the two and selects the angle between the outermost laying angle of the outer skin layer 4 and the central axis of the launch tube to be 80°~90° to ensure better resistance to internal pressure. At the same time, the angle between the outermost laying angle of the composite middle liner 2 and the central axis of the launch tube is 45°~60° to coordinate the bending performance and internal pressure resistance of the launch tube.

[0036] The multifunctional launch tube designed by the utility model meets the following performance requirements put forward by customers: (1) Mechanical properties: It can withstand the peak internal pressure of 0.8MPa and the temperature peak of 1000℃. It can bear a projectile weight of 50t, and the peak load of the erection support is not more than 70t. (2) Penetration protection performance: The overall structure can resist the normal angle of incidence of ordinary rifle bullets at a distance of 100°. (3) Electromagnetic shielding performance: The electromagnetic interference shielding efficiency for low-frequency and high-frequency bands is not less than 40dB. (4) Thermal insulation performance: The launch tube can withstand the specified sunlight intensity conditions (total radiation intensity is 1120W / m 2 ) after continuous irradiation for 4 hours, the temperature inside the cylinder does not exceed 35℃.

[0037] In the description of the present invention, it should be understood that the terms "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0039] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0040] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multifunctional launching tube, characterized in that: The invention comprises an aluminum alloy inner liner (1), a composite middle liner (2), a composite longitudinal rib (3) and an outer skin layer (4) which are arranged in sequence from the inside to the outside in the radial direction; the composite longitudinal rib (3) is arranged in plurality along the circumferential direction, each composite longitudinal rib (3) comprises a protrusion (301) and flanges (302) located on both sides of the protrusion (301); the flanges (302) are bonded to the composite middle liner (2); the outer peripheral surface of the protrusion (301) is connected to the outer skin layer (4); the composite longitudinal rib (3) divides the space between the composite middle liner (2) and the outer skin layer (4) into a plurality of sections along the circumferential direction; a thermal insulation layer (5) and an anti-penetration protection layer (6) are laid in each section; and the thermal insulation layer (5) and the anti-penetration protection layer (6) located on both sides of the protrusion (301) are arranged in a staggered manner.

2. The multifunctional launching tube according to claim 1, characterized in that: The thermal insulation layer (5) is a layered aerogel.

3. The multifunctional launching tube according to claim 1, characterized in that: The anti-penetration protection layer (6) is a UHMWPE composite material that is laid in layers.

4. The multifunctional launching tube according to claim 1, characterized in that: The inner surface of the anti-penetration protection located outside the raised portion (301) and the inner surface of the composite longitudinal rib (3) are on the same arc surface.

5. The multifunctional launching tube according to claim 1, characterized in that: The composite middle liner (2), composite longitudinal reinforcement (3) and outer skin layer (4) are all made of carbon fiber composite materials.

6. The multifunctional launching tube according to claim 5, characterized in that: The composite middle liner (2) comprises a glass fiber middle liner (8) arranged in close contact with the aluminum alloy inner liner (1); the glass fiber middle liner (8) is formed of glass fiber or glass fiber felt.

7. The multifunctional launching tube according to claim 1, characterized in that: The inner side surface of the outer skin layer (4) is provided with a shielding net (7).

8. The multifunctional launching tube according to claim 7, characterized in that: The thickness of the aluminum alloy lining (1) is 7 mm to 8 mm, the thickness of the composite middle lining (2) is 4 mm to 6 mm, the thickness of the composite longitudinal reinforcement (3) is 4 mm to 6 mm, the thickness of the thermal insulation layer (5) is 15 mm to 18 mm, the thickness of the anti-penetration protection layer (6) is 15 mm to 18 mm, the thickness of the shielding net (7) is 0.095 mm to 0.097 mm, and the thickness of the outer skin layer (4) is 4 mm to 6 mm.

9. The multifunctional launching tube according to claim 1, characterized in that: The angle between the outermost laying angle of the composite middle liner (2) and the central axis of the launch tube is 45° to 60°.

10. The multifunctional launching tube according to claim 9, characterized in that: The angle between the outermost laying angle of the outer skin layer (4) and the central axis of the launch tube is 80° to 90°.

Images