Reinforced shell for high internal pressure of the layered composite material

 

Reinforced shell contains the power frame with a cylindrical section, the end convex bottoms and flanges in their pin holes. The frame is equipped with a combination of groups of layers of spiral and end strips oriented in a spiral and circumferential directions respectively placed in them unidirectional high-modulus fibers. Filaments bonded polymeric binder. Case lined with internal protective coating. The flange and the inner bottom surface provided with annular surfaces with a straight generatrix with a smaller radius is made equal to the radius of the pin holes, and the greatest radius equal to r₀+(r_b-r₀)(of 0.25 to 0.9), where r₀is the radius of the pin holes, r_b- the maximum radius of the flange. 5 C.p. f-crystals, 4 Il.

The invention relates to shells made of composite materials, in particular reinforced casings for high internal pressure is used as load-bearing structures or sites in the short-term or prolonged exposure to excessive internal pressure.

It reinforced shells made of composite materials raise load-bearing structures of the cylinders and tanks at high internal pressures.

Known reinforced shell for high internal pressure of the layered composite material containing a main frame with a cylindrical section, the front bottoms and flanges in their pin holes in contact with their inner surfaces formed by the combination of groups of layers of spiral and annular strips oriented in a spiral and circumferential directions respectively placed in them unidirectional high-modulus filaments, bonded polymeric binder, lined interior protective coating (U.S. patent 3047191, CL 220/83 1962, N3083864, CL 220-83, 1963). This reinforced the shell inner surface of the power frame and in contact with the surface of the flange is made in the form of convex surfaces, which leads to Flexural deformations and increased stresses on the bottom in the area of the pin hole under the action of internal pressure and does not allow to use the whole potential energy of the reinforcing material framework.

Known also reinforced membrane according to patent EP 0300931 Bl, F 17 C 1/16, F 17 C 1/12, 1991, in which the bottom surface and in contact with the inner surfaces of the bottoms of the power frame flange surface issue is armazem and stresses on the bottom outside of the pin hole and significantly impairs the carrying capacity of the power frame.

Known reinforced shell for high internal pressure of the layered composite material in which the surface of the bottoms and the adjacent surface of the flanges profiled from the condition of maximum strength in unidirectional tapes on the bottom of the book Samples Acting, Vasiliev centuries , Bunakov Century A. Optimal reinforcement shells of revolution made of composite materials. - M. , 1977, - 144 C.). The surface of the bottoms of the shell is convex throughout forming a variable, but the end of the meridional radius of curvature at all points. This solution allows you to maximize the implementation of the stability of the used reinforcing material in comparison with all other schemes, but less compared with theoretical predictions. While the destruction of the power frame shell is usually pin holes.

The reasons for the emergence of large stresses at the pin holes compared with the entire surface of the bottom and shell as a whole is the Flexural deformation of this zone is defined by the geometric parameters of the shell at the pin holes.

The closest analogue technical solution is reinforced membrane according to the book "Optim Obraztsova of the Imperial family and other

The main task is the creation of a reinforced shell made of laminated composite material of high quality that would have eliminated the above-mentioned disadvantages, the shell would have increased strength.

The technical result from the use of the invention is to increase the bearing capacity, the weight of the perfection and reliability of the reinforced shell under the action of internal pressure.

The main problem is solved and the technical result achieved by changing the design of the bottoms of the frame reinforced shell and smetannyh in their pin holes of the flanges to eliminate the bending deformation of the shell at the pin holes.

To do this in a reinforced shell for high internal pressure of the layered composite material containing a main frame with a cylindrical section, the end convex bottoms and flanges in their pin holes in contact with their inner surfaces formed by the combination of groups of layers of spiral and annular strips oriented in a spiral and circumferential directions respectively placed in them unidirectional high-modulus filaments sealed by polim is and provided with annular surfaces with a straight generatrix with a smaller radius, made equal to the radius of the pin holes, and the greatest radius equal to r₀+(r_b-r₀)(of 0.25 to 0.9), where r₀is the radius of the pin holes, r_b- the maximum radius of the flange. The annular surface can be performed with a perpendicular arrangement of the straight line forming the axis of symmetry of the shell.

The flange may be provided with a protrusion and the bottom of the recess, respectively, made them ring surfaces with rectilinear generatrices. The annular surface of the protrusion and the recess, respectively, of the flange and the bottom can be made with the deviation of the straight line forming from the perpendicular to the axis of symmetry of the shell in the range from - 30^o0^o.

The flange may be provided with a recess, and the bottom protrusion, respectively, made them ring surfaces with rectilinear generatrices. The annular surface of the recess and protrusion, respectively, of the flange and the bottom can be made with the deviation of the straight line forming from the perpendicular to the axis of symmetry of the shell in the range of 0^o30^o.

Distinctive features reinforced shell for high internal pressure of the layered abgene ring surfaces with a straight generatrix; with the smaller radius of the annular surface is made equal to the radius of the pin holes and the greatest radius of the annular surface, is equal to r₀+(r_b-r₀)(of 0.25 to 0.9), where r₀is the radius of the pin holes, r_b- the maximum radius of the flange; - annular surface of the flange and the bottom is made with a perpendicular arrangement of the straight line forming the axis of symmetry of the shell; a flange provided with a protrusion and the bottom of the recess, respectively, made them ring surfaces with rectilinear generatrices; - circular surface of the protrusion and the recess, respectively, of the flange and the bottom can be made with the deviation of the straight line forming from the perpendicular to the axis of symmetry of the shell in the range from -30^o0^o; - flange provided with a recess, and the bottom protrusion, respectively, made them ring surfaces with rectilinear generatrices; - circular surface depressions and protrusions, respectively, of the flange and the bottom can be made with the deviation of the straight line forming from the perpendicular to the axis of symmetry of the shell in the range of 0^o30^o.

These essential features help to reduce the level of deformation is reliability.

Distinguishing the essential features are new, because their use in the prior art, analogs and prototype not found, which allows to characterize reinforced shell for high internal pressure according to the criterion of "novelty."

One set of new essential features with commonly known essential features that allow one to solve the problem and achieve new technical result in weight perfection structures by providing them with increased strength and reliability that characterizes the proposed solution significant differences from the prior art, analogs and prototypes. A new technical solution is the result of research work and creative input without the use of standardized projects or recommendations in this technical field, is the original, non-obvious to specialists in the art, corresponds in essential features the criterion of "inventive step".

The invention is illustrated by drawings with a brief description.

In Fig.1 presents a General view of the reinforced shell for high internal dublindublin on the bottom, in Fig. 3 shows a part of the bottom with a straight line forming an annular surface perpendicular to the axis of the shell, Fig.4 shows a part of the bottom flange in the recess on the flange and the ledge on the bottom.

A more detailed description of the invention consists in the following: Reinforced shell for high internal pressure of the layered composite material (Fig.1) contains the structural frame 1 with a cylindrical section 2, the front bottoms 3, 4 and flanges 5, 6 in their pin holes 7, 8, formed by the combination of groups 9, 10 and 11 layers 12, 13, 14 spiral and annular strips 15, 16, which are oriented in a spiral and circumferential directions respectively placed in them unidirectional high-modulus filaments 17, 18, bonded polymeric binder, lined interior protective coating 19.

The flange 6 and the inner surface 20 of the convex bottom 4 (Fig.2) is provided with annular surfaces 21, 22 with a straight generatrix 23 and 24 with a smaller radius is made equal to the radius of the pin holes r₀and the greatest radius equal to r₀+(r_b-r₀)(of 0.25 to 0.9), where r₀is the radius of the pin holes, r_b- the maximum radius of the flange.

Koltsevaya 23, 24 to the axis of symmetry of the shell.

The flange 5, 6 provided with a projection 25 (Fig.2), and the bottom of the recess 26, respectively, made them an annular surfaces 21, 22 with rectilinear generatrices 23, 24.

The annular surface 21, 22 of the protrusion 25 and the recess 26 respectively of the flange 6 and the bottom 4 (Fig.2) can be performed with a deviation of rectilinear form 23, 24 from the perpendicular to the axis of symmetry of the shell in the range from -30^o0^o.

The flange 6 provided with a recess 27, and the bottom 4 - lug 28 (Fig.4), respectively, made them an annular surfaces 21, 22 with rectilinear generatrices 23, 24.

The annular surface of the recess 27 and the projection 28 respectively of the flange 6 and the bottom 4 (Fig.4) can be performed with a deviation of rectilinear form 23, 24 from the perpendicular to the axis of symmetry of the shell in the range of 0^o30^o.

Reinforced shell for high internal pressure of the layered composite material (Fig.1 - 4) can be manufactured by a method of winding to a removable mandrel (not shown), followed by curing a polymeric binder.

The functioning of the reinforced shell for high internal pressure of the layered composite material on Osanna deformation within the elastic properties of composite materials which made her the power frame 1, with a view to ensuring high reliability and security without destroying bottoms 3, 4 zones of the flanges 5, 6 by reducing levels of strain and stress in the composite material at the pin holes. Tests of reinforced membranes are manufactured using new technical solutions, showed positive results. Implementation of the proposed technical solution allows to increase the weight of the perfection of products, ensuring high durability and reliability.

Thus, a new technical solution produced in production conditions, provides problem solving and the achievement of a new technical result, in the proposed set of features corresponds to the criterion "industrial applicability", i.e. the level of invention.

It should be noted that there may be various combinations of run-reinforced shell for high internal pressure of the layered composite material in the form, size and position of the individual elements. The proposed form of execution is only possible preferred options for its implementation, can be different combinations, if the strategic decision is not limited to its use in reinforced membranes. As for high internal pressure, it can be used to implement detected and other properties described in the application materials, to obtain the vessels working under pressure.

Claims

1. Reinforced shell for high internal pressure of the layered composite material containing a main frame with a cylindrical section, the end convex bottoms and flanges in their pin holes in contact with their inner surfaces formed by the combination of groups of layers of spiral and annular strips oriented in a spiral and circumferential directions respectively placed in them unidirectional high-modulus filaments, bonded polymeric binder, lined interior protective coating, characterized in that the flange and the inner surface of the concave bottom provided with annular surfaces with a straight generatrix, with a smaller radius is made equal to the radius of the pin holes, and the greatest radius, equal to r₀+(r_b-r₀)(0,250,9), where r₀is the radius of the pin holes, r_b- maximum redpoint with a perpendicular arrangement of the straight line forming the axis of symmetry of the shell.

3. Reinforced shell under item 1, characterized in that the flange is provided with a protrusion, and the bottom - hole respectively made them ring surfaces with rectilinear generatrices.

4. Reinforced shell under item 3, characterized in that the annular surface of the protrusion and the recess, respectively, of the flange and the bottom can be made with the deviation of the straight line forming from the perpendicular to the axis of symmetry of the shell in the range from -30 to 0^o.

5. Reinforced shell under item 1, characterized in that the flange is provided with a recess, and the bottom ledge respectively made them ring surfaces with rectilinear generatrices.

6. Reinforced shell under item 3, characterized in that the annular surface of the recess and protrusion, respectively, of the flange and the bottom can be made with the deviation of the straight line forming from the perpendicular to the axis of symmetry of the shell in the range from 0 to 30^o.