Multilayer pressure vessel for storing compressed gas

 

(57) Abstract:

Use: manufacture of the gas equipment, vehicles on gas fuel. The inventive vessel contains external power envelope of fibrous multi-layer composite material and an inner metal liner. In the areas of weld metal liner is made with a cavity open side power shell and withdrawn from the interior of vessel welds are located on the outer side of the cavity, and the cavity is filled with an elastic material with no gaps between the elastic material, the liner and the external power shell. External power shell in zones of welds can be made more annular layers. The design of the vessel provides increased strength when multiple loading of internal pressure due to the placement of welds in areas not exposed to high voltages. 1 C.p. F. 5 Il.

The invention relates to the field of energy, and more specifically to the manufacture of the gas equipment, and can be used, for example, in motor vehicles to gas fuel.

An essential element of the gas equipment of the vehicle is a tank for storing compressed data of the cars. M. Transport, 1988). Gas cylinder is one of the most dangerous in operation, elements of gas equipment and improving the safety of its operation is largely determined by the security of the container.

A known design of multilayer pressure vessel containing the external power shell made of composite materials and the inner metal sealing shell-liner (see U.S. patent N 29888240, CL 220-3, 1961 and N 3446385, CL 220-3, 1969; latest design adopted as a prototype). The metal liner is in the form of a welded shell which is being wound layers of the composite power of the shell.

One major drawback of this design is its low reliability due to the low fatigue strength of welded joints. This disadvantage makes it difficult to apply such pressure vessels in those cases where the design must withstand a large number of loading cycles (for example, in the automotive compressed gas cylinders).

To eliminate this inconvenience, you should change the design of the vessel so that when the loading of the vessel internal pressure zones of welded joints are not subjected to high loads.

is vcah the connected parts of the vessel (see U.S. patent N 3987923, CL 220-3, 1976). However, this design is not able to perceive high pressure, because it lacks the power shell, and a connection flanging "revealed" at the position of significant internal pressure.

The task, which is aimed by the invention, is to increase the reliability of the pressure vessel by increasing its strength during repeated loading of internal pressure due to the placement of welds in areas not exposed to high voltages.

This objective is achieved in that the proposed construction of a metal liner in the zones of welds made in the form of a hollow, open-side power shell and withdrawn from the interior of vessel welds are located on the outer side of the cavity, and the cavity is filled with an elastic material with no gaps between the elastic material, liner and external power shell.

Execution of the metallic liner in the zones of welds in the form of a hollow, open-side power shell and withdrawn from the interior of the vessel, and the location of the welds on the outer shell of the liner allows you to relieve the area of the weld when load is the material of the liner and the external power shell allows you to avoid the "disclosure" of the junction between the welded parts of the liner when loading internal pressure.

These characteristics in their totality provide technical result in all cases to which the requested amount of legal protection.

In addition, in the particular case of the requested device for reinforcement of the external power shell in zones of welds for more annular layers can be achieved more technical result, which consists in reducing the stress and strain of the metallic liner in the zones of welds, resulting in an additional increase in strength.

Presents information illustrated by the following figures:

Fig.1: General view of the proposed design of the vessel;

Fig.2 the delivery zone of the weld;

Fig.3 and 4 embodiments of the metal liner;

Fig. 5, the amplification circuitry external power shell in zones of welded joints.

The possibility of implementing the claimed device is confirmed by the presented figures, in which figure 1 shows the external power shell is made of a fibrous composite material, 2 metal liner. In the weld seam area 3 metal liner is made in the form of a cavity that is open from the force of the shell 1 and samcro seam is located on the outer shell of the liner 5. The cavity is filled with an elastic material 6 with no gaps between the elastic material, liner and external power shell.

The manufacture of the claimed device is as follows. Pre-manufactured metal parts of the liner 7 and 8 welded welded seam 3, in the zone of the weld is formed by a double shell 4 and 5. Then insert the elastic element 6 is made of elastic material (e.g. rubber) so that the outer contour of the elastic element in the zone of contact with the metal liner was repeating the inner loop double sheath metal liner, and in the area of contact with the external power shell to the desired inner loop power shell sm Fig.2). Next, the winding power shell made of composite material 1. Occurs when the wound contact pressure on the elastic material ensures no gaps between the elastic material, liner and external power shell.

During operation of the claimed device (i.e., when cyclic loading of internal pressure) in power shell and metal liner arise variable voltage. In this zone of the weld 3 is reground reliability of the pressure vessel by increasing its strength during repeated loading by internal pressure.

Options liner with two welded seams 9 and 10 shown in Fig.3 and 4; in this case, the liner is made of three preformed parts 11, 12 and 13. External power shell in the zone of each weld can be reinforced by additional ring layers 14.

1. Multilayer pressure vessel for storing compressed gas containing the external power shell made of fiber composite material and the internal weld metal liner, wherein the metal liner in the zones of welds made with a cavity open side power shell and withdrawn from the interior of vessel welds are located on the outer side of the cavity, and the cavity is filled with an elastic material with no gaps between the elastic material, liner and external power shell.

2. Vessel under item 1, characterized in that the external power shell in welded seams reinforced by additional annular layers.

 

Same patents:

The invention relates to multi-layered pressure vessels and may be used in the manufacture sverhnegabaritnyh buildings nuclear reactors of high power and large vessels in the chemical and petrochemical industry

The invention relates to refrigeration equipment, namely, cameras for low temperature storage of biological materials without freezing at temperatures below 0aboutWith under hydrostatic pressure, can be used for cryopreservation of biomaterials in biology, medicine, agriculture, and allows you to save properties of materials

The invention relates to the construction of vessels under high pressure, in particular for high-pressure cylinders (100 kgf/cm2and above), intended for the storage, transportation and use of compressed gases (air, oxygen, nitrogen, etc

FIELD: pressure vessels for storing highly inflammable fluids.

SUBSTANCE: member has double-walled shell. The internal wall of the shell is made of a thin-sheet material. The outer wall is made of a thick-sheet material. The space between the walls is filled with a gas, e.g. inert gas. The space receives pressure gauge, temperature sensor, pickup for determining chemical composition, which transmit signals to the central block for monitoring the storing process.

EFFECT: expanded functional capabilities.

2 dwg

FIELD: mechanical engineering.

SUBSTANCE: vessel has plastic shell, flanges mounted in the pole openings in the shell, and lid set in one of the pole flanges. The lid is concave inward and bears on the inner side of the pole flange. The butt between the pole flange and lid is made to provide the radius of the circumference formed by intersection of the middle surface of the lid and surface of the bearing part of the flange to be larger than that of the pole opening in the plastic shell. The thickness of the pole flange should be at least 1.5-2 mm, which is sufficient for the formation of the plastic shell. The loading acts on the developed bearing surface of the lid which is mating to the inner surface of the pole flange.

EFFECT: decreased weight of vessel.

2 cl, 5 dwg

FIELD: testing of bodies, gates, valves, check-up of the reliability of the test of serviceability of high-pressure vessels, reveal of hidden operating defects of the body.

SUBSTANCE: the method of testing of high-pressure vessels with transportation of the vessel from one station on the other car includes the following operations. Adapters and valves are dismantled, inner surface is examined, hydraulic tests are carried out, the vessel is dried up, adapters and valves are assembled, hydraulic tests are carried out, the vessel is dried up, adapters and valves are assembled, pneumatic tests are carried out. The above operations are realized on equipped stations. Transportation and realization of the above operations is effected at a permanent fixation of the vessel on the same car. The car has a frame with wheels, bracket, bed, handles, fastener. The frame is provided with two pairs of wheels, supporting rod is introduced in it, it is rigidly coupled with the bed and located perpendicularly to the longitudinal axis.

EFFECT: improved convenience of servicing and expanded functional potentialities.

6 cl, 8 dwg

FIELD: gas-and-oil producing industry; natural gas industry; mechanical engineering; production and usage of the high-pressure cylinders.

SUBSTANCE: the invention is pertaining to the field of gas-and-oil producing industry, natural gas industry, mechanical engineering, in particular, to production and usage of the high-pressure cylinders. The high-pressure cylinders are intended for storage of liquids and gases. The high-pressure cylinder consists of a pressure sealing shell and an external load-bearing element. At that the pressure sealing shell is made out of the components connected to each other by a non-detachable connection and the field of the non-detachable connection of components of the pressure sealing shell is reinforced with an additional component. At that the additional component height H and length L are bound by the following ratio: L = H/tgα; where α is the angle of friction of the load-bearing component material on the additional component material. The technical result is an increased reliability of the high-pressure cylinder.

EFFECT: the invention ensures an increased reliability of the high-pressure cylinder.

6 cl, 2 dwg

FIELD: mechanical engineering.

SUBSTANCE: pressure vessel comprises metallic flanges mounted in its pole ports. The bearing surface of the shank of the metallic flange is made of two sections. The first section is conical and located at the base of the metallic flange, and the second section is convex and is located at the top of the flange. The length of the generatrix of the cone is no less than the width of the reinforcing belt made of cords and threads plus the shift of the plastic due to its deformation.

EFFECT: reduced sizes and enhanced reliability.

2 dwg

FIELD: gas-charging trucks for transportation and storage of gas.

SUBSTANCE: proposed high-pressure vessel has cylindrical shell with cylindrical bores at the ends where gates are mounted up to the stop; these gates are made in form of covers with seals; vessel is also provided with locking members engageable with cover and shell; it is additionally provided with hold-down member; generatrix surface of covers is stepped in shape; seal is made in form of stack of elastic rings and protective washers; it is located on stage of lesser diameter between stage of larger diameter and hold-down ring member engageable with locking member.

EFFECT: reduced labor requirements in manufacture and assembly; reduced usage of metal.

6 cl, 5 dwg

FIELD: devices functioning under high pressure.

SUBSTANCE: proposed high-pressure vessel has body, bottoms, internal sealing shell, transversal and longitudinal force-bearing members, and jointing members. Transversal force-bearing members of body and bottoms are made of plates provided with coordinate holes and assembled through layer-by-layer shifted joint into stacks in the form of closed loops. Longitudinal force-bearing members are made in the form of rods mounted in through channels formed by coordinate holes to brace abutting stacks of body and bottoms together. Stepped transition points between stacks are filled with shaped split inserts furnished with fastening seats and joined together with stacks by means of rods.

EFFECT: enhanced reliability and facilitated assembly of vessel.

2 cl, 3 dwg

FIELD: high-pressure tanks.

SUBSTANCE: tank comprises hemispherical bottom and is provided with load-bearing shell having seal. The load-bearing shell is made of flexible layer, protective corrosion-protective and sealing layer, and is provided with pole opening. The corrosion-protective and sealing layer of the bottom is made of steel and bronze spirals with a ratio of 2:1 pressed one to the other and to fluoroplastic material whose outer side is additionally pressed to the reinforcing braid made of bronze spirals.

EFFECT: enhanced safety.

1 dwg

FIELD: machine building.

SUBSTANCE: pressure vessel contains solid-metal envelope implemented from tubular billet from thermally non hardenable aluminium-magnesium alloy, selected from the group: AMg2, AMg2.5, AMg3, AMg3.5, AMg4, AMg4.5, AMg5, AMg6 or its analog, hardening of which is implemented at loading of vessel by test pressure. In other version of implementation of pressure vessel contains external load-bearing envelope from composite material and solid-metal envelope. Manufacturing method of pressure vessel includes manufacturing of solid-metal envelope by method of flanging of at least one end section of tubular billet from thermally non hardenable aluminium-magnesium alloy.

EFFECT: usage of invention will provide simplification and price reduction of vessels' fabrication method.

36 cl, 2 dwg, 1 tbl

FIELD: mechanical engineering.

SUBSTANCE: invention refers to packed structure of high pressure reservoir. The structure consists of a tubular case with a bottom and an open end, and of a cover covering the open end. Inserted one into another circular shape slots and lugs of the packed structure are formed on internal and external sides of adjacent surfaces of the open end of the reservoir case and cover. A vent opening is formed between the internal and external lug. In the cover there is made an opening for air supply, particularly for inert gas supply into the vent opening. Adjacent surfaces on internal side of the internal slot and internal lug contact with their metal. Packing gaskets are maintained between the slots and lugs.

EFFECT: invention facilitates reliability of packing.

4 cl, 4 dwg

FIELD: cryogenic engineering.

SUBSTANCE: invention relates to reservoir 11 for storing cryogenic fluid medium. Reservoir 11 contains base part 12, vertical wall member 14 and preferably upper cover 19. Reservoir is provided with leak-proof barrier 26 preventing getting of cryogenic fluid medium into surrounding space and made from thin interconnected metal plates. Vertical wall 14 contains inner carrying wall member 24, and outer carrying wall member 25, and leak-proof barrier 26 is arranged between inner and outer carrying wall members. Invention provides description of method of manufacture of such reservoir 11. According to proposed method, firstly, base plate 12 is installed and then vertical wall 14 is concreted, preferably using slip or knockdown travelling forms. Firstly, inner carrying wall member 24 of wall 14 is reinforced and concreted, then leak-proof barrier 26 is placed from outer side of inner carrying wall member 24, and then outer carrying wall member 25 is reinforced and concreted.

EFFECT: prevention of cracking of impermeable wall and opening of outer wall.

20 cl, 5 dwg

FIELD: aerospace engineering, motor industry and shipbuilding, storage and transportation equipment of various gases and liquids under pressure, in particular, production of shell articles.

SUBSTANCE: before application of matrix-forming materials in an inflatable model with the reinforcement applied onto it, an excess pressure is built up providing for a tight adjoining of the reinforcement to the model surface and formation of elastic stresses in the reinforcement material of such a value that after application of the matrix-forming material and removal of pressure inside the model the presence of volumetric compressive stresses would be provided in the applied matrix-forming materials. The matrix-forming materials are applied by gas-thermal deposition on the reinforcement repeating the configuration of the ready-made ARTICLE. The reinforcement is made in the form of a folding net, whose cells are obtained by combination of linear elements and spring in a movable joint. The reinforcement is applied onto the inflatable model of the article of elastic materials.

EFFECT: provided production of shell articles for transportation and storage of substances corresponding to the requirements to the high-pressure vessel.

4 cl, 7 dwg

FIELD: machine building.

SUBSTANCE: in inter-housing compartments there arranged is a housing functionality recovery device that is made in the form of one, mainly two and three layers of a strapping plate from elastic material, which are fixed with one end on structural elements of inter-housing space with possibility of moving the non-fixed part of the strapping plate layer as to normal to surface of a power cover of the housing, and at least in one direction along surface of the power cover of the housing. At disturbance of integrity of the high-pressure vessel design, under action of the occurring pressure drop, the strapping plate is moved by moving a hole of puncture in the strapping plate relative to the strapping plate hole in the power cover; the puncture is covered and the power cover is sealed.

EFFECT: enhanced reliability.

3 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: method is implemented in the following way: in inter-housing compartments there arranged is a housing functionality recovery device that is made in the form of one, mainly two and three layers of a strapping plate from elastic material, which are fixed with one end on structural elements of inter-housing space with possibility of moving the non-fixed part of the strapping plate layer as to normal to surface of a power cover of the housing, and at least in one direction along surface of the power cover of the housing. At disturbance of integrity of the high-pressure vessel design, under action of the occurring pressure drop, the strapping plate is moved by moving a hole of puncture in the strapping plate relative to the strapping plate hole in the power cover; the puncture is covered and the power cover is sealed.

EFFECT: enhanced reliability.

3 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: in inter-housing compartments there arranged is a housing functionality recovery device that is made in the form of one, mainly two and three layers of a strapping plate from elastic material, which are fixed with one end on structural elements of inter-housing space with possibility of moving the non-fixed part of the strapping plate layer as to normal to surface of a power cover of the housing, and at least in one direction along surface of the power cover of the housing. At disturbance of integrity of the high-pressure vessel design, under action of the occurring pressure drop, the strapping plate is moved by moving a hole of puncture in the strapping plate relative to the strapping plate hole in the power cover; the puncture is covered and the power cover is sealed.

EFFECT: enhanced reliability.

3 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: rigid housing of a high-pressure vessel includes an external power cover, and internal perforated cover, which form inter-housing space interconnected with the inner working volume of the vessel and divided into compartments, mainly of a rectangular shape, by means of structural elements. In compartments of inter-housing space there arranged is a device for recovery of functionality of high-pressure vessel housing, which is made in the form of one, and preferably two and three layers of a strapping plate from elastic material, which are fixed with one end on structural elements of inter-housing space with possibility of moving the non-fixed part of the strapping plate layer as to normal to surface of a power cover of the housing, and at least in one direction along surface of the power cover of the housing.

EFFECT: enhanced reliability.

3 cl, 6 dwg

Up!