Reinforced shell for high internal pressure of the layered composite material (options)

 

Power frame reinforced shell for high internal pressure consists of a cylindrical section and an end of the convex bottoms and flanges in their pin holes. The frame formed by the combination of groups of layers of spiral and annular strips placed in them unidirectional high-modulus filaments, bonded polymeric binder, and coated with an internal protective coating. Pinch the outer ring elements fixed on the flanges and provided with annular projections. Circular protrusions protruding behind the annular projections of the bottoms of the power frame with a dense coverage of its outer layers. In another embodiment of the device between at least one bottom and outer annular element placed additional annular element mounted on the outer surface of the annular protrusion of the bottom. Additional annular element made of composite material with the location of high modulus filaments in the annular direction of high strength steel or titanium. The use of the invention will increase the carrying capacity, the weight of the perfection and reliability of the reinforced shell. 3 S. and 2 C.p. f-crystals, 3 ill.

The invention relates the population, used as load-bearing structures or sites in the short-term or prolonged exposure to excessive internal pressure.

One of the most loaded parts of reinforced membranes are zones pin holes, where mainly the destruction of the shell due to exceeding the working stresses allowed for the reinforcing material. At the same time it reinforced shells made of composite materials high demands on the durability, reliability and weight perfection when used as 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 with the formation of the annular protrusion of the pin holes, the crypt is 20/83, 1962).

This reinforced shell pin hole formed located here spiral ribbons that when the loading of internal pressure due to the high ring strain at the pole hole tensile stress exceeds the limit earlier than in the entire shell.

Known reinforced shell for high internal pressure of the layered composite material, in which in the area of the pin holes between the layers are ring elements with an inner diameter equal to the pole hole, and sealed with layers of shell bolted connection (USA 4053081, CL 220V / 3, 1977).

In this shell ring elements overlap the surface layers with access to the pin hole that leads to the transfer of the meridional efforts through the layer of binder, the strength of which is much lower reinforcing material, and a through bolt connection, which is in itself sufficiently strong hub stresses and not always acceptable from design considerations.

Known reinforced shell patent Fr 2219899, IPC265 h 81/00, 1974, 2251756, IPC2F 16 J 11/00, 1974, in which the bottom is provided with a ring element located at the pole open the awning USA 4053081, CL 220V / 3, 1977), to an even greater extent, due to the location of the annular element on the outside of the shell.

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, clamping recorded on the flange, the outer annular elements 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 (patent EP 0398827 Al, F 17 C 1/16, 1990).

This reinforced shell pressure, is fixed on the flange, the outer annular elements made of a smooth, did not provide a sufficiently secure the shell from pin holes and excludes the existence of a large ring deformations of the shell holes that lead to the occurrence of peak stresses in this zone under the action of internal pressure and premature destruction of the shell.

The causes of the total deformation, "bulging" of the shell under the action of internal pressure, which increases at the edges of holes.

The closest analogue technical solution is reinforced membrane according to patent EP 0398827 Al, F 17 C 1/16, 1990, selected as a prototype.

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 the achievement of improving 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 is achieved due to the maximum limit of movement of the shell in the radial direction from pin holes and, accordingly, reduce the ring deformations 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, zafiksirovan the tapes, oriented in a spiral and circumferential directions respectively placed in them unidirectional high-modulus filaments with the formation of the annular protrusion of the pin holes, bonded polymeric binder, lined interior protective coating, the outer ring elements have made in one piece with them annular projections extending over the annular projections of the bottoms of the power frame with a dense coverage of its outer layers.

In the second case between at least one bottom and outer annular part fixed to the flange, an additional annular element made of composite material with the location of high modulus filaments in the annular direction and mounted on the outer surface of the annular protrusion of the bottom with dense coverage of its outer layer.

The outer ring member can be made of a composite material.

In the third embodiment, between at least one bottom and outer annular part fixed to the flange, an additional annular element made of high strength steel or titanium and mounted on the outer surface of the annular protrusion of the bottom with the density of the material.

Distinctive features reinforced shell for high internal pressure of the layered composite material are the following symptoms.

Option 1 - outer ring elements are fitted, made in one piece with them annular projections; - the setting for the ring protrusions bottoms framework; - with a dense coverage of its outer layers.

Option 2 - between at least one bottom and outer annular part fixed to the flange, an additional annular element; on the outer surface of the annular ledge; with dense coverage of its outer layer is made of a composite material with the location of high modulus filaments in the annular direction; - the outer ring element is made of a composite material.

Option 3 - between at least one bottom and outer annular part fixed to the flange, an additional annular element;
- on the outer surface of the annular ledge;
- with a dense coverage of its outer layer;
- made of high-strength steel or titanium;
- outer ring element is made of a composite material.

General distinctive features of the variations is with a dense coverage of the outer layers of the annular protrusion of the bottom and their location on the outer surface of the annular protrusion. These distinctive features are essential, because each of them separately and together is aimed at solving the problem and achieving a new technical of the three variants of execution of the reinforced shell. In the first embodiment, the annular protrusion of the outer ring element extends over the annular protrusion of the bottom, the second and third options additional annular element is placed on the outer surface of the circular protrusion of the bottom. In all three embodiments, the annular ledge and an additional annular element is made with a dense coverage of the outer layers of the annular protrusion of the bottom. In the second variant, an additional annular element can be made of a composite material with the location of high modulus filaments in a circle. In the third embodiment, an additional annular element can be made of high strength steel or titanium. In addition, in the second and third embodiments, the outer ring element can be made of a composite material. These essential features can reduce the annular deformation of the shell in the zone of the pin holes, to increase the weight perfection reinforced shell and its operational nudeintense, analogues 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 pressure of the layered composite material of Fig.2 shows a part of the bottom flange and the outer ring element of the AMI.

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 convex bottoms 3, 4 and flanges 5, 6 in their pin holes 7, 8, clamping recorded on the flange, the outer ring elements 9, 10, formed by the combination of the groups 11, 12 and 13 layers 14, 15, 16 spiral and annular strips 17, 18, oriented in a spiral and circumferential directions respectively placed in them unidirectional high modulus threads 19, 20, with the formation of the annular ledge 21 pin holes, bonded polymeric binder, faced with internal protective coating 22.

The outer ring element 10 (Fig.2 - the first option) is fitted with made in one piece with him annular protrusion 23 extending over the annular projection 21 of the bottom of the power structure with a dense coverage of its outer layers 24.

Between the bottom 4 and the outer ring element 10 (Fig.3 - the second option) placed additional annular element 25 mounted on the outer surface of the annular projection 21 of the bottom with dense coverage of its outer layers.

AWS which can be manufactured by the 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 the basis of unidirectional reinforcing material and a polymeric binder is finding it in the stress-strain state within the elastic properties of the composite material of her 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 yotnoshenia 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 all this does not go beyond the limits of existing features set forth in the claims.

The proposed solution 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, flanges at the pin holes of the heads, pinch, fixed on the flange, the outer annular elements 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 with the formation of the annular protrusion of the pole features the outer ring elements have made in one piece with them annular projections, setting over the annular projections of the bottoms of the power frame with a dense coverage of its outer layers.

2. Reinforced shell for high internal pressure of the layered composite material containing a main frame with a cylindrical section, the end convex bottoms, flanges at the pin holes of the heads, pinch, fixed on the flange, the outer annular elements 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 with the formation of the annular protrusion of the pin holes, bonded polymeric binder, lined interior protective coating, characterized in that between at least one bottom and outer annular part fixed to the flange, posted by additional annular element made of composite material with the location of high modulus filaments in the annular direction and mounted on the outer surface of the annular protrusion of the bottom with dense coverage of its outer layer.

3. Reinforced shell under item 2, characterized in that the outer ring element within the composite material, containing the power frame with a cylindrical section, the end convex bottoms, flanges at the pin holes of the heads, pinch, fixed on the flange, the outer annular elements 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 with the formation of the annular protrusion of the pin holes, bonded polymeric binder, lined interior protective coating, characterized in that between at least one bottom and outer annular part fixed to the flange, an additional annular element, made of high-strength steel or titanium and mounted on the outer surface of the annular protrusion of the bottom with dense coverage of its outer layers.

5. Reinforced shell under item 4, characterized in that the outer annular element is made of a composite material.

 

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FIELD: storing or distributing gases or liquids.

SUBSTANCE: pressure vessel has cylindrical shell made of spiral and ring layers which are made of a fiber composite material and bottoms with flanges made of spiral layers and set in openings. The thickness of the cylindrical shell uniformly decreases along the length in the direction to the bottom with greater opening due to the decrease of the thickness of the ring layers.

EFFECT: reduced weight and cost of vessels.

3 dwg

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