Novel radial soft isolating device for engine

Abstract

The utility model provides a novel radial soft isolating device for an engine, which relates to the technical field of rocket engines and comprises a front top cover and a radial interlayer, one end of the radial interlayer is arranged on one side of the front top cover, and the other end of the radial interlayer is connected with an axial isolating layer of a heat insulating layer of a combustion chamber; a heat insulation ring is further arranged between the front top cover and the radial interlayer; the radial interlayer comprises a soft layer and a base layer. According to the utility model, the whole radial interlayer is in the shape of the annular cylinder, and the radial interlayer is formed by mutually connecting the soft layer and the base layer, so that the overall weight is reduced, and the soft layer and the base layer are bonded together, so that the integrally formed structure has light weight; meanwhile, after the soft layer and the graphene net layer are bonded, the strength and the stability of the whole radial interlayer are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rocket engine technical field, concretely relates to a new engine radial soft isolation device. BACKGROUND

[0002] Double pulse solid rocket engine is a new type of rocket engine aiming at the conventional solid lack of energy adjustable, controllable technology, under the premise of avoiding greatly improving the combustion chamber and nozzle structure, adopts the stage isolation device and separates the section in the combustion chamber, each isolation section has independent ignition working capacity, and can provide pulse thrust according to the mission trajectory demand, thereby improving the effective range, terminal velocity and shooting accuracy of missile or device, emphasizing the penetration, survivability.

[0003] There are more researches on the pulse isolation device of domestic and foreign state rocket engine, and the typical isolation device can be divided into cabin type and layer type, the cabin type isolation device is divided into ceramic breakable type, injection rod type and metal diaphragm type according to different structure forms, but it is mostly used for the double pulse engine with metal shell and small diameter, the layer type isolation device can be divided into axial type, radial type and axial-radial hybrid type according to the different isolation directions of pulse propellant charge, and is mostly used for the double pulse engine with composite shell and large diameter, and is often used as the power device of large-caliber missile device system.

[0004] However, the isolation device of large-size solid rocket engine has complex structure and large weight, which will affect the operation of the rocket, therefore, the utility model provides a new engine radial soft isolation device to improve the above problems. UTILITY MODEL CONTENT

[0005] Therefore, the utility model wants to solve the technical problem in the prior art that the new engine radial soft isolation device has the defects of complex structure and large weight, so as to provide a new engine radial soft isolation device.

[0006] In order to solve the above problems, the utility model provides a new engine radial soft isolation device, which comprises:

[0007] The radial layer is arranged at one side of the front top cover, and the other end of the radial layer is connected with the axial separation layer of the heat insulation layer of the combustion chamber.

[0008] The heat insulation ring is arranged between the front top cover and the radial layer.

[0009] The radial layer comprises a soft layer and a base layer.

[0010] Preferably, the front head cover comprises: a head cover shell and an inner liner, the head cover shell and the inner liner are clamped, and centers of the head cover shell and the inner liner are respectively provided with first and second through holes, and the first and second through holes are used for arranging first pulse ignitions.

[0011] Preferably, a side of the inner liner away from the head cover shell is provided with a fitting groove, and one end of the radial partition layer is provided with a fitting part which abuts against a bottom of the fitting groove and is detachably connected with the fitting groove.

[0012] Preferably, the fitting part is provided with a first screw hole, the fitting groove is provided with a second screw hole corresponding to the first screw hole, the head cover shell is provided with a third screw hole corresponding to the first and second screw holes, and the fitting part is connected with the first, second and third screw holes in sequence through bolts.

[0013] Preferably, a side of the fitting groove away from the center of the inner liner is further provided with a positioning groove, and the heat insulation ring has an L-shaped axial section, and the heat insulation ring abuts against the positioning groove and the radial partition layer in sequence.

[0014] Preferably, one end of the radial partition layer away from the inner liner is provided with a first alignment part, and the axial partition layer of the heat insulation layer of the combustion chamber is provided with a second alignment part matched with the first alignment part, and the radial partition layer and the axial partition layer of the heat insulation layer are connected through the first and second alignment parts.

[0015] Preferably, the head cover shell and the inner liner are provided with third and fourth through holes on the outside away from the positioning groove, and the third and fourth through holes are used for arranging second pulse ignitions.

[0016] Preferably, the base layer is arranged on the inside of the soft layer, and the base layer is a graphene net layer.

[0017] The novel engine radial soft isolation device has the following beneficial effects:

[0018] The radial partition layer is in the form of a cylindrical ring, the soft layer and the base layer are connected with each other, the overall weight is reduced, the soft layer and the base layer are bonded together, the structure formed by the whole has a lighter mass, and the strength and stability of the overall radial partition layer are improved after the bonding of the soft layer and the graphene net layer. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an axial sectional view of the utility model;

[0020] Figure 2The first alignment part structure installation schematic view of the utility model;

[0021] Figure 3 The bolt structure installation schematic view of the utility model;

[0022] Figure 4 The second alignment part structure installation schematic view of the utility model;

[0023] Figure 5 The base structure installation schematic view of the utility model.

[0024] The sign of the reference mark is:

[0025] 1, top cover shell;11, inner lining;12, assembly groove;13, positioning groove;2, second pulse ignition;3, second pulse charge;4, axial separation layer of heat insulation layer;41, second alignment part;5, first pulse charge;6, radial separation layer;61, soft layer;62, base layer;63, assembly part;64, first alignment part;7, heat insulation ring;8, bolt;9, first pulse ignition. Specific implementation

[0026] As Figures 1-5 shown, the utility model provides a novel engine radial soft isolation device, it includes:

[0027] front top cover and radial separation layer 6, one end of radial separation layer 6 is arranged in one side of front top cover, the other end of radial separation layer 6 is connected the axial separation layer 4 of heat insulation layer of combustion chamber;

[0028] The heat insulation ring 7 is further arranged between the front top cover and the radial separation layer 6;

[0029] Radial separation layer 6 includes soft layer 61 and base layer 62, and the base layer is arranged in the inner side of the soft layer.As Figures 1-5 shown, a novel engine radial soft isolation device, it includes front top cover and radial separation layer 6, wherein, radial separation layer 6 is annular overall cylinder, radial separation layer 6 adopts soft layer 61 and base layer 62 and is connected each other, it is light in weight while doing, through the adhesion of soft layer and base layer, the structure formed by the whole has lighter quality, and the strength and stability of the whole radial separation layer are improved after the adhesion of soft layer and graphene net layer;

[0030] Wherein, the outer layer of radial separation layer 6 is the second pulse charge 3 area, the inner side of radial separation layer 6 and close to the axial separation layer of heat insulation layer of combustion chamber is the first pulse charge 5 area, and the base layer is arranged in the inner side of the soft layer.

[0031] In some embodiments, the front head cover comprises a head cover shell 1 and an inner liner 11, the head cover shell 1 and the inner liner 11 are clamped, the centers of the head cover shell 1 and the inner liner 11 are respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole are used to set the first pulse ignition 9. As shown in Figures 1-5 The connection between the head cover shell 1 and the inner liner 11 can be in the form of bonding, and the integrally formed structure serves as a heat protection structure. The head cover shell 1 is formed by machining a metal part, and the inner liner 11 is formed by machining a non-metal material. The inner liner 11 is made of high-silicon / phenolic molding material. Corresponding protrusions and grooves are provided between the two, so as to facilitate the formation of a larger contact area between the two and promote the bonding effect. A sealing ring is provided between the first pulse ignition and the first through hole and the second through hole to maintain the stability of the charge in the inner layer of the front head cover.

[0032] In some embodiments, the inner liner 11 is provided with an assembly groove 12 away from the side of the head cover shell 1, one end of the radial partition layer 6 is provided with an assembly part 63, and the assembly part 63 abuts against the bottom of the assembly groove 12 and is detachably connected with the assembly groove 12. As shown in Figures 1-5 The annular radial partition layer 6 divides the inner liner 11 into two side regions.

[0033] In some embodiments, the assembly part 63 is provided with a first screw hole, the assembly groove 12 is provided with a second screw hole corresponding to the first screw hole, the head cover shell 1 is provided with a third screw hole corresponding to the first screw hole and the second screw hole, and the assembly part 63 is connected with the first screw hole, the second screw hole and the third screw hole in sequence by bolts 8. As shown in Figure 3 The assembly part 63 is provided with a first screw hole, the first screw hole is symmetrically provided with a plurality of centers with the center of the radial partition layer 6 as the center, the second screw hole is also symmetrically provided with a plurality of centers with the center of the inner liner 11 as the center, and the third screw hole is also symmetrically provided with a plurality of centers with the center of the head cover shell 1 as the center. The first screw hole, the second screw hole and the third screw hole correspond to each other, so that a plurality of bolts 8 pass through the first screw hole, the second screw hole and the third screw hole to form a screw connection between the radial partition layer 6 and the front head cover.

[0034] In some embodiments, a positioning groove 13 is further provided on the side of the assembly groove 12 away from the center of the inner liner 11, and the axial section of the heat insulation ring 7 is L-shaped. The heat insulation ring 7 abuts against the positioning groove 13 and the radial partition layer 6 in sequence. As shown in Figure 3 The L-shaped heat insulation ring 7 is inserted into the positioning groove 13 at one end and abuts against the outer layer of the radial partition layer 6 at the other end, and then is fixed by gluing. During the gluing process, a tooling part is used to support it, and then the tooling part is removed after curing.

[0035] In some embodiments, the radial partition 6 is provided with a first positioning part 64 at one end away from the inner liner 11, and the combustion chamber heat insulation layer axial partition 4 is provided with a second positioning part 41 matched with the first positioning part 64, and the radial partition 6 and the combustion chamber heat insulation layer axial partition 4 are connected through the first positioning part 64 and the second positioning part 41. Figure 4 As shown in the figure, the radial partition 6 and the combustion chamber heat insulation layer axial partition 4 are connected through the first positioning part 64 and the second positioning part 41, which can be that a clamping part is arranged on the outside of the annular radial partition 6, and a clamping ring corresponding to the clamping part is arranged on the inside of the combustion chamber heat insulation layer axial partition 4, the clamping part and the clamping ring are assembled, and an adhesive layer is arranged at the abutting position of the mutual assembly, so that the radial partition 6 and the combustion chamber heat insulation layer axial partition 4 are connected through the first positioning part 64 and the second positioning part 41.

[0036] In some embodiments, the top cover shell 1 and the inner liner 11 are provided with a third through hole and a fourth through hole away from the outside of the positioning groove 13, and the third through hole and the fourth through hole are used to arrange a second pulse ignition 2. Figures 1-5 As shown in the figure, the second pulse ignition 2 is sleeved with a sealing ring, so that the second pulse ignition 2 and the third through hole and the fourth through hole form a seal.

[0037] In some embodiments, the base layer 62 is a graphene mesh layer. Figures 1-5 As shown in the figure, the soft layer 61 is a ternary ethylene-propylene rubber material, which has a lighter weight and is commercially available, and the base layer 62 is located on the inside of the soft layer 61 and is a graphene mesh layer, a plurality of uniform graphene strips are respectively rotated from both ends of the soft layer 61 with the center of the soft layer 61 as the axis, so that the graphene strips rotated at both ends are staggered together to form a plurality of uniform diamond strips, and the formed graphene mesh is in the shape of a circular ring and is connected with the soft layer 61, and the connection mode can be that the graphene mesh layer and the soft layer 61 are heat-pressed after the soft layer 61 is heat-pressed, so that the soft layer 61 and the graphene mesh layer are bonded together, and the overall formed structure has a lighter weight, and the bonding of the soft layer 61 and the graphene mesh layer improves the strength and stability of the overall radial partition 6.

[0038] The above only describes the preferred embodiments of the present application, and should be pointed out that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, which should be regarded as the protection scope of the present application.

Claims

1. A novel engine radial soft isolation device, characterized by, The new engine radial soft isolation device comprises a front top cover and a radial partition layer, one end of the radial partition layer is arranged on one side of the front top cover, and the other end of the radial partition layer is connected with an axial partition layer of an adiabatic layer of a combustion chamber. A heat insulation ring is further arranged between the front top cover and the radial partition layer. The radial partition layer comprises a soft layer and a base layer, and the base layer is arranged inside the soft layer.

2. The new engine radial soft isolation device according to claim 1, wherein the front top cover comprises a top cover shell and an inner liner, the top cover shell and the inner liner are clamped, the center of the top cover shell and the center of the inner liner are respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole are used for arranging a first pulse ignition.

3. The new engine radial soft isolation device according to claim 2, wherein the side of the inner liner away from the top cover shell is provided with an assembly groove, one end of the radial partition layer is provided with an assembly part, the assembly part abuts against the bottom of the assembly groove and is detachably connected with the assembly groove.

4. The new engine radial soft isolation device according to claim 3, wherein the assembly part is provided with a first screw hole, the assembly groove is provided with a second screw hole corresponding to the first screw hole, the top cover shell is provided with a third screw hole corresponding to the first screw hole and the second screw hole, and the assembly part is connected with the first screw hole, the second screw hole and the third screw hole in sequence through bolts.

5. The new engine radial soft isolation device according to claim 3, wherein the side of the assembly groove away from the center of the inner liner is further provided with a positioning groove, the axial section of the heat insulation ring is L-shaped, and the heat insulation ring abuts against the positioning groove and the radial partition layer in sequence.

6. The new engine radial soft isolation device according to claim 2, wherein the end of the radial partition layer away from the inner liner is provided with a first positioning part, the axial partition layer of the adiabatic layer of the combustion chamber is provided with a second positioning part matched with the first positioning part, and the radial partition layer and the axial partition layer of the adiabatic layer are connected through the first positioning part and the second positioning part.

7. The new engine radial soft isolation device according to claim 5, wherein the top cover shell and the inner liner are provided with a third through hole and a fourth through hole on the outside away from the positioning groove, and the third through hole and the fourth through hole are used for arranging a second pulse ignition.

8. The new engine radial soft isolation device according to claim 1, wherein the base layer is a graphene net layer. ​ ​ ​ ​ ​ ​ ​ ​

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